PVT-E Solar Panel Guide for Hybrid Heat | SOLETKS<\/title><br \/>\n <meta name=\"description\" content=\"SOLETKS PVT-E solar panel guide covering PV output, heat recovery, sizing, PVT-E vs PVT-T, project fit, RFQ data and buyer checks.\">\n <link rel=\"canonical\" href=\"https:\/\/service.soletksolar.com\/pvt-e-solar-panel-guide\/\">\n <meta name=\"author\" content=\"SOLETKS Technical Content Team\"><br \/>\n <meta name=\"primary_query\" content=\"PVT-E solar panel\"><br \/>\n <meta name=\"date\" content=\"2026-07-01\">\n <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap\" rel=\"stylesheet\">\n<style>\n \/* \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n PVT-E Product Page \u2014 \"Clean Voltage\" Design System\n Concept: precision engineering dashboard + solar warmth\n Palette: obsidian \/ solar gold \/ forest accent \/ frost\n Typography: Space Grotesk headlines + Inter body + Space Mono data\n \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 *\/<\/p>\n<p> :root {\n \/* Core palette *\/\n --obsidian: #0A0E14;\n --obsidian-2: #141C26;\n --obsidian-3: #1D2635;\n --slate: #2C3A4D;\n --slate-2: #3D4F65;\n --steel: #6B7A92;\n --steel-2: #9AA4B4;\n --frost: #EEF2F7;\n --frost-2: #F6F8FB;\n --white: #FFFFFF;<\/p>\n<p> \/* Accent \u2014 solar gold *\/\n --gold: #F5A623;\n --gold-2: #E8920F;\n --gold-pale: #FFF7E8;\n --gold-pale-2: #FEF0CC;<\/p>\n<p> \/* Secondary accents *\/\n --teal: #0E8A7A;\n --teal-pale: #E5F5F3;\n --ember: #D04A1E;\n --ember-pale: #FBF0EC;<\/p>\n<p> \/* Type *\/\n --font-head: 'Space Grotesk', system-ui, sans-serif;\n --font-body: 'Inter', system-ui, sans-serif;\n --font-mono: 'Space Mono', 'Courier New', monospace;<\/p>\n<p> \/* Spacing *\/\n --max-w: 1200px;\n --r-sm: 8px;\n --r-md: 16px;\n --r-lg: 24px;\n --r-xl: 32px;<\/p>\n<p> \/* Shadows *\/\n --shadow-1: 0 1px 3px rgba(10, 14, 20, .08), 0 4px 12px rgba(10, 14, 20, .06);\n --shadow-2: 0 2px 8px rgba(10, 14, 20, .1), 0 16px 40px rgba(10, 14, 20, .1);\n --shadow-3: 0 8px 24px rgba(10, 14, 20, .14), 0 32px 80px rgba(10, 14, 20, .14);\n }<\/p>\n<p> \/* \u2500\u2500 Reset & Base \u2500\u2500 *\/\n *,\n *::before,\n *::after {\n box-sizing: border-box;\n margin: 0;\n padding: 0;\n }<\/p>\n<p> html {\n scroll-behavior: smooth;\n -webkit-text-size-adjust: 100%;\n }<\/p>\n<p> body {\n font-family: var(--font-body);\n font-size: 16px;\n line-height: 1.75;\n color: var(--obsidian-2);\n background: var(--white);\n -webkit-font-smoothing: antialiased;\n -moz-osx-font-smoothing: grayscale;\n }<\/p>\n<p> img {\n display: block;\n max-width: 100%;\n height: auto;\n }<\/p>\n<p> a {\n color: var(--gold-2);\n text-decoration: none;\n border-bottom: 1px solid rgba(232, 146, 15, .3);\n transition: color .2s, border-color .2s;\n }<\/p>\n<p> a:hover {\n color: var(--obsidian);\n border-bottom-color: var(--obsidian);\n }<\/p>\n<p> \/* \u2500\u2500 Type Scale \u2500\u2500 *\/\n h1 {\n font-family: var(--font-head);\n font-size: clamp(2.1rem, 4.5vw, 3.6rem);\n font-weight: 800;\n line-height: 1.15;\n letter-spacing: -0.03em;\n color: var(--obsidian);\n }<\/p>\n<p> h2 {\n font-family: var(--font-head);\n font-size: clamp(1.65rem, 2.8vw, 2.4rem);\n font-weight: 700;\n line-height: 1.2;\n letter-spacing: -0.025em;\n color: var(--obsidian);\n margin: 0 0 1rem;\n }<\/p>\n<p> h3 {\n font-family: var(--font-head);\n font-size: 1.3rem;\n font-weight: 700;\n line-height: 1.3;\n color: var(--obsidian);\n margin: 0 0 .6rem;\n }<\/p>\n<p> h4 {\n font-family: var(--font-head);\n font-size: 1.05rem;\n font-weight: 600;\n color: var(--obsidian);\n margin: 0 0 .4rem;\n }<\/p>\n<p> p {\n margin: 0 0 1rem;\n }<\/p>\n<p> p:last-child {\n margin-bottom: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Utility \u2500\u2500 *\/\n .wrap {\n max-width: var(--max-w);\n margin: 0 auto;\n padding: 0 1.5rem;\n }<\/p>\n<p> .mono {\n font-family: var(--font-mono);\n }<\/p>\n<p> \/* \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n BANNER\n \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 *\/\n .banner {\n background: var(--obsidian);\n position: relative;\n overflow: hidden;\n padding: 0;\n }<\/p>\n<p> \/* Decorative grid overlay *\/\n .banner::before {\n content: \"\";\n position: absolute;\n inset: 0;\n background-image:\n linear-gradient(rgba(245, 166, 35, .07) 1px, transparent 1px),\n linear-gradient(90deg, rgba(245, 166, 35, .07) 1px, transparent 1px);\n background-size: 60px 60px;\n pointer-events: none;\n }<\/p>\n<p> \/* Radial glow *\/\n .banner::after {\n content: \"\";\n position: absolute;\n top: -30%;\n right: -10%;\n width: 70%;\n height: 170%;\n background: radial-gradient(ellipse, rgba(245, 166, 35, .13) 0%, transparent 65%);\n pointer-events: none;\n }<\/p>\n<p> .banner-inner {\n position: relative;\n z-index: 2;\n max-width: var(--max-w);\n margin: 0 auto;\n padding: 3.5rem 1.5rem 0;\n display: grid;\n grid-template-columns: 1fr 420px;\n gap: 3rem;\n align-items: end;\n }<\/p>\n<p> \/* breadcrumb *\/\n .crumb {\n display: flex;\n flex-wrap: wrap;\n gap: .35rem;\n align-items: center;\n grid-column: 1 \/ -1;\n font-family: var(--font-mono);\n font-size: .72rem;\n color: rgba(255, 255, 255, .4);\n text-transform: uppercase;\n letter-spacing: .12em;\n margin-bottom: 2rem;\n }<\/p>\n<p> .crumb a {\n color: rgba(255, 255, 255, .6);\n border-bottom: 1px dotted rgba(255, 255, 255, .25);\n }<\/p>\n<p> .crumb a:hover {\n color: var(--gold);\n border-bottom-color: var(--gold);\n }<\/p>\n<p> .crumb .sep {\n color: rgba(255, 255, 255, .2);\n }<\/p>\n<p> .crumb .here {\n color: var(--gold);\n }<\/p>\n<p> \/* left content *\/\n .banner-left {\n padding-bottom: 3.5rem;\n }<\/p>\n<p> .tag-row {\n display: flex;\n flex-wrap: wrap;\n gap: .5rem;\n margin-bottom: 1.4rem;\n }<\/p>\n<p> .pill {\n display: inline-flex;\n align-items: center;\n gap: .4rem;\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .14em;\n padding: .3rem .75rem;\n border-radius: 999px;\n border: none;\n }<\/p>\n<p> .pill-gold {\n background: rgba(245, 166, 35, .18);\n color: var(--gold);\n border: 1px solid rgba(245, 166, 35, .3);\n }<\/p>\n<p> .pill-teal {\n background: rgba(14, 138, 122, .18);\n color: #2DD4BF;\n border: 1px solid rgba(14, 138, 122, .3);\n }<\/p>\n<p> .banner h1 {\n color: #FFFFFF;\n margin-bottom: 1.3rem;\n }<\/p>\n<p> .banner h1 span {\n color: var(--gold);\n }<\/p>\n<p> .banner-lede {\n font-size: 1.1rem;\n line-height: 1.7;\n color: rgba(255, 255, 255, .72);\n margin-bottom: 2rem;\n max-width: 600px;\n }<\/p>\n<p> .cta-row {\n display: flex;\n flex-wrap: wrap;\n gap: .75rem;\n }<\/p>\n<p> .btn {\n display: inline-flex;\n align-items: center;\n gap: .5rem;\n font-family: var(--font-head);\n font-size: .95rem;\n font-weight: 600;\n padding: .85rem 1.6rem;\n border-radius: 999px;\n cursor: pointer;\n border: none;\n text-decoration: none;\n transition: .2s ease;\n white-space: nowrap;\n border-bottom: none !important;\n }<\/p>\n<p> .btn-gold {\n background: var(--gold);\n color: var(--obsidian);\n }<\/p>\n<p> .btn-gold:hover {\n background: #FFB830;\n transform: translateY(-2px);\n box-shadow: 0 8px 24px rgba(245, 166, 35, .4);\n color: var(--obsidian);\n }<\/p>\n<p> .btn-outline {\n background: transparent;\n color: rgba(255, 255, 255, .85);\n border: 1.5px solid rgba(255, 255, 255, .25) !important;\n }<\/p>\n<p> .btn-outline:hover {\n background: rgba(255, 255, 255, .08);\n color: #fff;\n border-color: rgba(255, 255, 255, .5) !important;\n }<\/p>\n<p> \/* Right panel \u2014 stat card stack *\/\n .banner-right {\n padding-bottom: 0;\n display: flex;\n flex-direction: column;\n gap: .6rem;\n }<\/p>\n<p> .stat-card {\n background: rgba(255, 255, 255, .06);\n border: 1px solid rgba(255, 255, 255, .1);\n border-radius: var(--r-md);\n padding: 1.2rem 1.4rem;\n backdrop-filter: blur(8px);\n display: flex;\n align-items: center;\n gap: 1.1rem;\n }<\/p>\n<p> .stat-icon {\n width: 44px;\n height: 44px;\n border-radius: 10px;\n background: rgba(245, 166, 35, .15);\n border: 1px solid rgba(245, 166, 35, .25);\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: 1.3rem;\n flex-shrink: 0;\n }<\/p>\n<p> .stat-content {}<\/p>\n<p> .stat-val {\n font-family: var(--font-mono);\n font-size: 1.55rem;\n font-weight: 700;\n color: var(--gold);\n line-height: 1;\n letter-spacing: -0.02em;\n }<\/p>\n<p> .stat-lab {\n font-size: .78rem;\n color: rgba(255, 255, 255, .55);\n font-family: var(--font-mono);\n text-transform: uppercase;\n letter-spacing: .08em;\n margin-top: .25rem;\n }<\/p>\n<p> \/* bottom image strip *\/\n .banner-img-strip {\n position: relative;\n z-index: 2;\n max-width: var(--max-w);\n margin: 2.5rem auto 0;\n padding: 0 1.5rem;\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 1rem;\n padding-bottom: 0;\n }<\/p>\n<p> .strip-img {\n border-radius: var(--r-lg) var(--r-lg) 0 0;\n overflow: hidden;\n height: 280px;\n }<\/p>\n<p> .strip-img img {\n width: 100%;\n height: 100%;\n object-fit: cover;\n object-position: center;\n transition: transform .5s ease;\n }<\/p>\n<p> .strip-img:hover img {\n transform: scale(1.03);\n }<\/p>\n<p> \/* \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n NAV BAR (jump links)\n \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 *\/\n .jumpnav {\n background: var(--frost-2);\n border-bottom: 1px solid rgba(10, 14, 20, .08);\n position: sticky;\n top: 0;\n z-index: 100;\n }<\/p>\n<p> .jumpnav-inner {\n max-width: var(--max-w);\n margin: 0 auto;\n padding: 0 1.5rem;\n display: flex;\n gap: 0;\n overflow-x: auto;\n scrollbar-width: none;\n }<\/p>\n<p> .jumpnav-inner::-webkit-scrollbar {\n display: none;\n }<\/p>\n<p> .jumpnav a {\n display: inline-block;\n padding: .9rem 1.1rem;\n font-size: .82rem;\n font-weight: 600;\n color: var(--steel);\n border-bottom: 2.5px solid transparent;\n white-space: nowrap;\n text-decoration: none;\n transition: .2s;\n }<\/p>\n<p> .jumpnav a:hover {\n color: var(--gold-2);\n border-bottom-color: var(--gold);\n }<\/p>\n<p> \/* \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n MAIN CONTENT\n \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 *\/\n .main {\n max-width: var(--max-w);\n margin: 0 auto;\n padding: 0 1.5rem 6rem;\n }<\/p>\n<p> \/* section spacing *\/\n .section {\n padding: 4rem 0 0;\n }<\/p>\n<p> .section:first-child {\n padding-top: 4rem;\n }<\/p>\n<p> \/* section label *\/\n .sec-label {\n display: inline-flex;\n align-items: center;\n gap: .5rem;\n font-family: var(--font-mono);\n font-size: .7rem;\n text-transform: uppercase;\n letter-spacing: .2em;\n color: var(--gold-2);\n margin-bottom: .7rem;\n }<\/p>\n<p> .sec-label::before {\n content: \"\";\n width: 24px;\n height: 2px;\n background: var(--gold);\n border-radius: 1px;\n }<\/p>\n<p> h2.section-h {\n margin-bottom: 1.4rem;\n }<\/p>\n<p> h2.section-h::after {\n content: \"\";\n display: block;\n width: 40px;\n height: 3px;\n background: var(--gold);\n border-radius: 2px;\n margin-top: .55rem;\n }<\/p>\n<p> \/* \u2500\u2500 Quick answer callout \u2500\u2500 *\/\n .callout-primary {\n background: linear-gradient(135deg, #FFFCF3, var(--gold-pale));\n border: 1px solid var(--gold-pale-2);\n border-left: 4px solid var(--gold);\n border-radius: var(--r-md);\n padding: 1.6rem 1.8rem;\n margin: 2.5rem 0;\n }<\/p>\n<p> .callout-primary .callout-tag {\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .15em;\n color: var(--gold-2);\n margin-bottom: .5rem;\n display: block;\n }<\/p>\n<p> .callout-primary p {\n color: var(--obsidian-2);\n font-size: 1.02rem;\n }<\/p>\n<p> .callout-primary strong {\n color: var(--gold-2);\n }<\/p>\n<p> \/* fit \/ not-fit grid *\/\n .fit-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 1rem;\n margin: 1.8rem 0 2.5rem;\n }<\/p>\n<p> .fit-card {\n background: #fff;\n border: 1px solid var(--frost);\n border-radius: var(--r-md);\n padding: 1.4rem 1.5rem;\n box-shadow: var(--shadow-1);\n }<\/p>\n<p> .fit-card.good {\n border-top: 3px solid var(--teal);\n }<\/p>\n<p> .fit-card.bad {\n border-top: 3px solid var(--ember);\n }<\/p>\n<p> .fit-card .fit-head {\n font-family: var(--font-mono);\n font-size: .72rem;\n text-transform: uppercase;\n letter-spacing: .12em;\n margin-bottom: .6rem;\n }<\/p>\n<p> .fit-card.good .fit-head {\n color: var(--teal);\n }<\/p>\n<p> .fit-card.bad .fit-head {\n color: var(--ember);\n }<\/p>\n<p> .fit-card p {\n font-size: .95rem;\n color: var(--slate);\n line-height: 1.65;\n }<\/p>\n<p> \/* \u2500\u2500 Tables \u2500\u2500 *\/\n .table-wrap {\n border-radius: var(--r-md);\n overflow: hidden;\n border: 1px solid #E4E9F0;\n background: #fff;\n box-shadow: var(--shadow-1);\n margin: 1.4rem 0 2rem;\n }<\/p>\n<p> table {\n width: 100%;\n border-collapse: collapse;\n font-size: .94rem;\n }<\/p>\n<p> thead th {\n background: var(--obsidian-2);\n color: rgba(255, 255, 255, .9);\n font-family: var(--font-mono);\n font-size: .74rem;\n text-transform: uppercase;\n letter-spacing: .1em;\n padding: .95rem 1.1rem;\n text-align: left;\n font-weight: 400;\n }<\/p>\n<p> thead th.r {\n text-align: right;\n }<\/p>\n<p> tbody td {\n padding: .85rem 1.1rem;\n border-bottom: 1px solid #EEF1F5;\n vertical-align: top;\n color: var(--obsidian-2);\n }<\/p>\n<p> tbody tr:last-child td {\n border-bottom: none;\n }<\/p>\n<p> tbody tr:nth-child(even) td {\n background: var(--frost-2);\n }<\/p>\n<p> tbody tr:hover td {\n background: var(--gold-pale);\n }<\/p>\n<p> td.val {\n font-family: var(--font-mono);\n font-size: .88rem;\n color: var(--teal);\n font-weight: 700;\n text-align: right;\n white-space: nowrap;\n }<\/p>\n<p> td.note {\n color: var(--steel);\n font-size: .9rem;\n }<\/p>\n<p> \/* \u2500\u2500 Split layout (text + image) \u2500\u2500 *\/\n .split {\n display: grid;\n grid-template-columns: 1.05fr 1fr;\n gap: 3rem;\n align-items: center;\n margin: 2.5rem 0;\n }<\/p>\n<p> .split.rev {\n grid-template-columns: 1fr 1.05fr;\n }<\/p>\n<p> .split.rev .split-img {\n order: -1;\n }<\/p>\n<p> .split-img {\n border-radius: var(--r-xl);\n overflow: hidden;\n box-shadow: var(--shadow-3);\n background: var(--frost);\n }<\/p>\n<p> .split-img img {\n width: 100%;\n height: 100%;\n object-fit: cover;\n aspect-ratio: 4\/3;\n }<\/p>\n<p> .split-img figcaption {\n padding: .7rem 1rem;\n font-size: .8rem;\n color: var(--steel);\n font-family: var(--font-mono);\n background: var(--frost-2);\n border-top: 1px solid #E4E9F0;\n }<\/p>\n<p> \/* \u2500\u2500 Feature grid (advantages) \u2500\u2500 *\/\n .feat-grid {\n display: grid;\n grid-template-columns: repeat(4, 1fr);\n gap: 1rem;\n margin: 2rem 0;\n }<\/p>\n<p> .feat-card {\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: var(--r-lg);\n padding: 1.7rem 1.4rem;\n box-shadow: var(--shadow-1);\n transition: .25s ease;\n position: relative;\n overflow: hidden;\n }<\/p>\n<p> .feat-card::before {\n content: \"\";\n position: absolute;\n top: 0;\n left: 0;\n right: 0;\n height: 3px;\n background: var(--gold);\n }<\/p>\n<p> .feat-card:hover {\n transform: translateY(-4px);\n box-shadow: var(--shadow-3);\n border-color: var(--gold);\n }<\/p>\n<p> .feat-num {\n font-family: var(--font-mono);\n font-size: 2.2rem;\n font-weight: 700;\n color: rgba(245, 166, 35, .15);\n line-height: 1;\n margin-bottom: .5rem;\n letter-spacing: -0.04em;\n }<\/p>\n<p> .feat-card h3 {\n font-size: 1rem;\n margin-bottom: .5rem;\n }<\/p>\n<p> .feat-card p {\n font-size: .88rem;\n color: var(--slate);\n line-height: 1.6;\n margin: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Spec table (highlighted) \u2500\u2500 *\/\n .spec-group {\n margin: 2rem 0 0;\n }<\/p>\n<p> .spec-group h3 {\n font-size: .8rem;\n font-family: var(--font-mono);\n text-transform: uppercase;\n letter-spacing: .14em;\n color: var(--steel);\n padding: .6rem 1.1rem;\n background: var(--frost);\n border: 1px solid #E4E9F0;\n border-bottom: none;\n border-radius: var(--r-sm) var(--r-sm) 0 0;\n margin: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Application cards \u2500\u2500 *\/\n .app-list {\n display: flex;\n flex-direction: column;\n gap: 1rem;\n margin: 1.8rem 0;\n }<\/p>\n<p> .app-item {\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: var(--r-lg);\n overflow: hidden;\n box-shadow: var(--shadow-1);\n display: grid;\n grid-template-columns: 260px 1fr;\n }<\/p>\n<p> .app-item-img {\n background: var(--frost);\n overflow: hidden;\n }<\/p>\n<p> .app-item-img img {\n width: 100%;\n height: 100%;\n object-fit: cover;\n }<\/p>\n<p> .app-item-body {\n padding: 1.6rem 1.8rem;\n }<\/p>\n<p> .app-num {\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .18em;\n color: var(--gold-2);\n margin-bottom: .4rem;\n display: block;\n }<\/p>\n<p> .app-item h3 {\n font-size: 1.2rem;\n margin-bottom: .6rem;\n }<\/p>\n<p> .app-item p {\n font-size: .95rem;\n color: var(--slate);\n margin-bottom: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Comparison \u2500\u2500 *\/\n .compare-wrap {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 1rem;\n margin: 2rem 0;\n }<\/p>\n<p> .compare-card {\n background: #fff;\n border: 1.5px solid #E4E9F0;\n border-radius: var(--r-lg);\n padding: 1.8rem 1.5rem;\n position: relative;\n transition: .2s;\n }<\/p>\n<p> .compare-card h3 {\n font-size: 1.35rem;\n margin-bottom: .3rem;\n }<\/p>\n<p> .compare-card .c-sub {\n font-family: var(--font-mono);\n font-size: .72rem;\n text-transform: uppercase;\n letter-spacing: .12em;\n color: var(--steel);\n margin-bottom: 1rem;\n display: block;\n }<\/p>\n<p> .compare-card .c-row {\n display: flex;\n gap: .5rem;\n margin: .5rem 0;\n font-size: .9rem;\n align-items: flex-start;\n }<\/p>\n<p> .compare-card .c-row::before {\n content: \"\u25b8\";\n color: var(--gold);\n flex-shrink: 0;\n margin-top: 1px;\n }<\/p>\n<p> .compare-card.active {\n border-color: var(--gold);\n background: linear-gradient(160deg, var(--gold-pale), #fff 60%);\n box-shadow: var(--shadow-2);\n }<\/p>\n<p> .compare-badge {\n position: absolute;\n top: -10px;\n right: 1.2rem;\n background: var(--gold);\n color: var(--obsidian);\n font-family: var(--font-mono);\n font-size: .68rem;\n font-weight: 700;\n letter-spacing: .1em;\n text-transform: uppercase;\n padding: .22rem .65rem;\n border-radius: 4px;\n }<\/p>\n<p> .compare-card .c-link {\n margin-top: 1.1rem;\n display: block;\n font-size: .88rem;\n }<\/p>\n<p> \/* \u2500\u2500 Config blocks (system configs) \u2500\u2500 *\/\n .config-grid {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 1rem;\n margin: 1.8rem 0;\n }<\/p>\n<p> .config-card {\n background: var(--frost-2);\n border: 1px solid #E4E9F0;\n border-radius: var(--r-md);\n padding: 1.4rem 1.3rem;\n transition: .2s;\n }<\/p>\n<p> .config-card:hover {\n background: #fff;\n box-shadow: var(--shadow-2);\n border-color: var(--gold);\n }<\/p>\n<p> .config-icon {\n font-size: 1.8rem;\n margin-bottom: .6rem;\n }<\/p>\n<p> .config-card h4 {\n font-size: 1rem;\n margin-bottom: .4rem;\n }<\/p>\n<p> .config-card p {\n font-size: .88rem;\n color: var(--slate);\n line-height: 1.6;\n margin: 0;\n }<\/p>\n<p> .config-fit {\n display: inline-block;\n margin-top: .6rem;\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .1em;\n color: var(--teal);\n background: var(--teal-pale);\n padding: .2rem .6rem;\n border-radius: 4px;\n }<\/p>\n<p> \/* \u2500\u2500 Project proof \u2500\u2500 *\/\n .proof-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 1.2rem;\n margin: 1.8rem 0;\n }<\/p>\n<p> .proof-card {\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: var(--r-lg);\n overflow: hidden;\n box-shadow: var(--shadow-1);\n }<\/p>\n<p> .proof-card-img {\n aspect-ratio: 16\/9;\n background: var(--obsidian-3);\n background-size: cover;\n background-position: center;\n }<\/p>\n<p> .proof-card-body {\n padding: 1.2rem 1.4rem;\n }<\/p>\n<p> .proof-meta {\n font-family: var(--font-mono);\n font-size: .7rem;\n text-transform: uppercase;\n letter-spacing: .1em;\n color: var(--gold-2);\n margin-bottom: .4rem;\n display: block;\n }<\/p>\n<p> .proof-card h4 {\n font-size: 1rem;\n margin-bottom: .4rem;\n }<\/p>\n<p> .proof-card p {\n font-size: .88rem;\n color: var(--slate);\n margin: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Checklist \u2500\u2500 *\/\n .checklist {\n margin: 1.2rem 0;\n }<\/p>\n<p> .checklist-item {\n display: flex;\n gap: .75rem;\n align-items: flex-start;\n padding: .6rem 0;\n border-bottom: 1px solid var(--frost);\n font-size: .95rem;\n }<\/p>\n<p> .checklist-item:last-child {\n border-bottom: none;\n }<\/p>\n<p> .check-dot {\n width: 20px;\n height: 20px;\n background: var(--gold-pale);\n border: 1.5px solid var(--gold);\n border-radius: 50%;\n flex-shrink: 0;\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: .6rem;\n color: var(--gold-2);\n margin-top: 2px;\n }<\/p>\n<p> \/* \u2500\u2500 FAQ accordion \u2500\u2500 *\/\n .faq {\n margin: 1.8rem 0;\n }<\/p>\n<p> .faq details {\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: var(--r-md);\n margin: .55rem 0;\n transition: .2s;\n }<\/p>\n<p> .faq details[open] {\n border-color: var(--gold);\n box-shadow: var(--shadow-1);\n }<\/p>\n<p> .faq summary {\n padding: 1.1rem 1.3rem;\n font-family: var(--font-head);\n font-weight: 600;\n font-size: .98rem;\n cursor: pointer;\n list-style: none;\n display: flex;\n justify-content: space-between;\n align-items: center;\n color: var(--obsidian);\n }<\/p>\n<p> .faq summary::-webkit-details-marker {\n display: none;\n }<\/p>\n<p> .faq summary::after {\n content: \"+\";\n font-size: 1.3rem;\n font-weight: 300;\n color: var(--gold-2);\n transition: .2s;\n flex-shrink: 0;\n }<\/p>\n<p> .faq details[open] summary::after {\n content: \"\u2212\";\n }<\/p>\n<p> .faq .faq-body {\n padding: 0 1.3rem 1.2rem;\n font-size: .95rem;\n color: var(--slate);\n line-height: 1.75;\n }<\/p>\n<p> .faq .faq-body p:last-child {\n margin-bottom: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Formula \/ highlight note \u2500\u2500 *\/\n .formula-box {\n background: var(--obsidian-2);\n color: #E8F4E4;\n border-radius: var(--r-md);\n padding: 1.6rem 1.8rem;\n margin: 1.8rem 0;\n font-family: var(--font-mono);\n font-size: .95rem;\n line-height: 1.8;\n }<\/p>\n<p> .formula-box .f-eq {\n font-size: 1.05rem;\n color: var(--gold);\n margin: .4rem 0;\n display: block;\n }<\/p>\n<p> .formula-box .f-note {\n color: rgba(255, 255, 255, .5);\n font-size: .82rem;\n }<\/p>\n<p> \/* \u2500\u2500 Confirm note (gray blockquote) \u2500\u2500 *\/\n .note-box {\n background: var(--frost-2);\n border-left: 3px solid var(--steel-2);\n border-radius: 0 var(--r-sm) var(--r-sm) 0;\n padding: 1.2rem 1.5rem;\n margin: 1.4rem 0;\n font-size: .9rem;\n color: var(--steel);\n }<\/p>\n<p> .note-box strong {\n color: var(--obsidian-2);\n }<\/p>\n<p> \/* \u2500\u2500 CTA band \u2500\u2500 *\/\n .cta-band {\n background: linear-gradient(135deg, var(--obsidian-2) 0%, var(--obsidian-3) 100%);\n border-radius: var(--r-xl);\n padding: 2.8rem 2.6rem;\n margin: 3.5rem 0 1.5rem;\n position: relative;\n overflow: hidden;\n color: #fff;\n }<\/p>\n<p> .cta-band::before {\n content: \"\";\n position: absolute;\n top: -40%;\n right: -10%;\n width: 60%;\n height: 200%;\n background: radial-gradient(ellipse, rgba(245, 166, 35, .15), transparent 70%);\n pointer-events: none;\n }<\/p>\n<p> .cta-band h2 {\n color: #fff;\n margin-bottom: .8rem;\n }<\/p>\n<p> .cta-band h2::after {\n background: var(--gold);\n }<\/p>\n<p> .cta-band p {\n color: rgba(255, 255, 255, .75);\n max-width: 660px;\n margin-bottom: 1.6rem;\n font-size: 1.05rem;\n }<\/p>\n<p> .cta-band .btn-row {\n display: flex;\n flex-wrap: wrap;\n gap: .75rem;\n }<\/p>\n<p> \/* \u2500\u2500 Data note box \u2500\u2500 *\/\n .data-note {\n background: var(--teal-pale);\n border: 1px solid rgba(14, 138, 122, .2);\n border-left: 4px solid var(--teal);\n border-radius: var(--r-md);\n padding: 1.3rem 1.6rem;\n margin: 1.5rem 0;\n font-size: .93rem;\n color: var(--obsidian-2);\n }<\/p>\n<p> .data-note .dn-tag {\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .14em;\n color: var(--teal);\n margin-bottom: .3rem;\n display: block;\n }<\/p>\n<p> \/* \u2500\u2500 STK reference panel \u2500\u2500 *\/\n .stk-panel {\n background: var(--obsidian-3);\n border-radius: var(--r-lg);\n padding: 2rem 2rem;\n margin: 1.8rem 0;\n color: rgba(255, 255, 255, .8);\n }<\/p>\n<p> .stk-panel h3 {\n color: #fff;\n margin-bottom: .8rem;\n }<\/p>\n<p> .stk-panel p {\n font-size: .92rem;\n margin-bottom: 1rem;\n }<\/p>\n<p> .stk-panel .table-wrap {\n background: rgba(255, 255, 255, .04);\n border-color: rgba(255, 255, 255, .1);\n }<\/p>\n<p> .stk-panel table thead th {\n background: rgba(255, 255, 255, .08);\n color: rgba(255, 255, 255, .75);\n }<\/p>\n<p> .stk-panel table tbody td {\n color: rgba(255, 255, 255, .8);\n border-color: rgba(255, 255, 255, .08);\n }<\/p>\n<p> .stk-panel table tbody tr:nth-child(even) td {\n background: rgba(255, 255, 255, .04);\n }<\/p>\n<p> .stk-panel table tbody tr:hover td {\n background: rgba(245, 166, 35, .08);\n }<\/p>\n<p> .stk-panel table td.val {\n color: var(--gold);\n }<\/p>\n<p> \/* \u2500\u2500 Internal links \u2500\u2500 *\/\n .int-links {\n background: var(--frost-2);\n border: 1px dashed #D0D8E4;\n border-radius: var(--r-md);\n padding: 1.4rem 1.6rem;\n margin: 2rem 0;\n }<\/p>\n<p> .int-links strong {\n font-size: .82rem;\n font-family: var(--font-mono);\n text-transform: uppercase;\n letter-spacing: .1em;\n color: var(--steel);\n display: block;\n margin-bottom: .6rem;\n }<\/p>\n<p> .int-links ul {\n list-style: none;\n display: flex;\n flex-wrap: wrap;\n gap: .4rem;\n }<\/p>\n<p> .int-links li a {\n display: inline-block;\n padding: .4rem .9rem;\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: 999px;\n font-size: .85rem;\n color: var(--obsidian);\n border-bottom: none;\n transition: .2s;\n }<\/p>\n<p> .int-links li a:hover {\n background: var(--obsidian);\n color: var(--gold);\n }<\/p>\n<p> \/* \u2500\u2500 Summary block \u2500\u2500 *\/\n .ai-summary {\n background: linear-gradient(135deg, var(--frost-2), var(--white));\n border: 1px solid #DDE3EC;\n border-radius: var(--r-xl);\n padding: 2.2rem 2.4rem;\n margin: 3rem 0 0;\n }<\/p>\n<p> .ai-summary .sec-label {\n margin-bottom: 1rem;\n }<\/p>\n<p> .ai-summary h2 {\n font-size: 1.7rem;\n margin-bottom: 1rem;\n }<\/p>\n<p> .ai-summary h2::after {\n display: none;\n }<\/p>\n<p> .ai-summary p {\n font-size: .98rem;\n color: var(--slate);\n line-height: 1.8;\n }<\/p>\n<p> \/* \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n RESPONSIVE\n \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 *\/\n @media (max-width: 980px) {\n .banner-inner {\n grid-template-columns: 1fr;\n gap: 2rem;\n padding-bottom: 0;\n }<\/p>\n<p> .banner-right {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: .6rem;\n }<\/p>\n<p> .banner-img-strip {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .strip-img:last-child {\n display: none;\n }<\/p>\n<p> .split {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .split.rev .split-img {\n order: 0;\n }<\/p>\n<p> .feat-grid {\n grid-template-columns: 1fr 1fr;\n }<\/p>\n<p> .compare-wrap {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .config-grid {\n grid-template-columns: 1fr 1fr;\n }<\/p>\n<p> .proof-grid {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .app-item {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .app-item-img {\n height: 200px;\n }<\/p>\n<p> .fit-grid {\n grid-template-columns: 1fr;\n }\n }<\/p>\n<p> @media (max-width: 640px) {\n h1 {\n font-size: 2rem;\n }<\/p>\n<p> .banner-inner {\n padding-top: 2.5rem;\n }<\/p>\n<p> .banner-right {\n grid-template-columns: 1fr 1fr;\n }<\/p>\n<p> .feat-grid {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .config-grid {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .cta-band {\n padding: 1.8rem 1.4rem;\n }<\/p>\n<p> .ai-summary {\n padding: 1.5rem 1.4rem;\n }<\/p>\n<p> .main {\n padding: 0 1rem 4rem;\n }<\/p>\n<p> .wrap {\n padding: 0 1rem;\n }<\/p>\n<p> table {\n font-size: .84rem;\n }<\/p>\n<p> thead th,\n tbody td {\n padding: .7rem .8rem;\n }\n }\n <\/style>\n<p><\/head><body><\/p>\n<p> <\/p>\n<section class=\"banner\" aria-label=\"PVT-E product banner\">\n<div class=\"banner-inner\">\n<p> <\/p>\n<nav class=\"crumb\" aria-label=\"Breadcrumb\">\n <a href=\"\/\">Home<\/a><span class=\"sep\"> \u203a <\/span><br \/>\n <a href=\"\/products\/\">Products<\/a><span class=\"sep\"> \u203a <\/span><br \/>\n <a href=\"\/products\/pvt-solar-panel\/\">PVT Solar Panel<\/a><span class=\"sep\"> \u203a <\/span><br \/>\n <span class=\"here\">PVT-E Type Solar Panel<\/span><br \/>\n <\/nav>\n<p> <\/p>\n<div class=\"banner-left\">\n<div class=\"tag-row\">\n <span class=\"pill pill-gold\">\u2600 Electricity-First PVT<\/span><br \/>\n <span class=\"pill pill-teal\">\u26a1 + Heat Recovery<\/span>\n <\/div>\n<h1>PVT-E Type <span>Solar Panel<\/span> \u2014 Dual Energy. One Roof Surface.<\/h1>\n<p class=\"banner-lede\">\n Generates DC electricity from PV cells while recovering usable low-temperature heat from the same<br \/>\n module \u2014 built for limited-roof projects that need both power and practical heat output.\n <\/p>\n<p class=\"article-meta\" style=\"color:rgba(255,255,255,.72);font-size:.9rem;margin:0 0 1.25rem\">\n By SOLETKS Technical Content Team \u00b7 Updated July 1, 2026 \u00b7 Technical review:<br \/>\n PVT and solar thermal engineering team.\n <\/p>\n<div class=\"cta-row\">\n <a href=\"#request-spec-pack\" class=\"btn btn-gold\">Request SPEC PACK & Quote \u2192<\/a><br \/>\n <a href=\"#technical-data\" class=\"btn btn-outline\">View Specifications<\/a>\n <\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"banner-right\">\n<div class=\"stat-card\">\n<div class=\"stat-icon\">\u26a1<\/div>\n<div class=\"stat-content\">\n<div class=\"stat-val\">580 W<\/div>\n<div class=\"stat-lab\">PV Power @ STC<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n<div class=\"stat-icon\">\ud83c\udf21<\/div>\n<div class=\"stat-content\">\n<div class=\"stat-val\">\u2264 80%<\/div>\n<div class=\"stat-lab\">Combined Efficiency<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n<div class=\"stat-icon\">\ud83d\udcd0<\/div>\n<div class=\"stat-content\">\n<div class=\"stat-val\">22.44%<\/div>\n<div class=\"stat-lab\">Cell Efficiency<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n<div class=\"stat-icon\">\ud83d\udd0b<\/div>\n<div class=\"stat-content\">\n<div class=\"stat-val\">1180 W<\/div>\n<div class=\"stat-lab\">Peak Thermal Power<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"banner-img-strip\">\n<div class=\"strip-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/ueditor\/504\/upload\/image\/20260107\/1767756610784631.jpg.webp\" alt=\"SOLETKS PVT-E solar panel dual electricity and heat output\" loading=\"eager\">\n <\/div>\n<div class=\"strip-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/ueditor\/504\/upload\/image\/20260107\/1767756675451255.jpg.webp\" alt=\"PVT-E photovoltaic thermal panel technical structure\" loading=\"eager\">\n <\/div>\n<\/p><\/div>\n<\/section>\n<p> <\/p>\n<nav class=\"jumpnav\" aria-label=\"Page section navigation\">\n<div class=\"jumpnav-inner\">\n <a href=\"#what-is-pvte\">What Is PVT-E<\/a><br \/>\n <a href=\"#technical-data\">Technical Data<\/a><br \/>\n <a href=\"#advantages\">Advantages<\/a><br \/>\n <a href=\"#how-it-works\">How It Works<\/a><br \/>\n <a href=\"#applications\">Applications<\/a><br \/>\n <a href=\"#comparison\">Comparison<\/a><br \/>\n <a href=\"#projects\">Projects<\/a><br \/>\n <a href=\"#sizing\">Sizing Guide<\/a><br \/>\n <a href=\"#faq\">FAQ<\/a><br \/>\n <a href=\"#request-spec-pack\">Get Quote<\/a>\n <\/div>\n<\/nav>\n<p> <br \/>\n <main class=\"main\"><\/p>\n<p> <\/p>\n<div class=\"callout-primary\" style=\"margin-top:3rem\">\n <span class=\"callout-tag\">Quick Answer<\/span><\/p>\n<p>A <strong>PVT-E type solar panel<\/strong> is an electricity-first photovoltaic-thermal (PVT) module that<br \/>\n generates DC power from PV cells while simultaneously recovering usable low-temperature heat from the<br \/>\n back of the module. It is designed for buildings that need both electricity and heat from the same roof<br \/>\n area \u2014 particularly domestic hot water preheating, heat pump support, pool heating and commercial hybrid<br \/>\n solar projects. Under suitable conditions, SOLETKS states that PVT-E can achieve <strong>total solar<br \/>\n utilization up to 80%<\/strong>.<\/p>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"fit-grid\">\n<div class=\"fit-card good\">\n<div class=\"fit-head\">\u2713 Best fit<\/div>\n<p>Residential rooftops, apartments, hotels, gyms, villas, public buildings, heat pump projects and<br \/>\n commercial roofs where electricity remains the main priority but recovered heat has real value.<\/p>\n<\/p><\/div>\n<div class=\"fit-card bad\">\n<div class=\"fit-head\">\u2717 Not best for<\/div>\n<p>Power-only projects, buildings with no heat load, or projects that cannot support a hydraulic loop,<br \/>\n storage tank, pump station, controls and backup heating.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"int-links\">\n <strong>Explore SOLETKS PVT range<\/strong><\/p>\n<ul>\n<li><a href=\"\/products\/pvt-solar-panel\/\">PVT Solar Panel category<\/a><\/li>\n<li><a href=\"\/products\/pvt-solar-panel\/pvt-t-type-solar-panel\/\">PVT-T Type<\/a><\/li>\n<li><a href=\"\/products\/pvt-solar-panel\/tp-v-pro-type-solar-panel\/\">TP\/V Pro Type<\/a><\/li>\n<li><a href=\"\/products\/pvt-hybrid-solar-systems\/\">PVT Hybrid Systems<\/a><\/li>\n<li><a href=\"\/featured-projects\/\">Featured Projects<\/a><\/li>\n<li><a href=\"\/company\/quality-assurance\/\">Quality Assurance<\/a><\/li>\n<li><a href=\"\/contact\/\">Contact SOLETKS<\/a><\/li>\n<\/ul><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"what-is-pvte\">\n <span class=\"sec-label\">Section 01<\/span><\/p>\n<h2 class=\"section-h\">Why PVT-E Exists<\/h2>\n<div class=\"split\">\n<div>\n<p>A standard PV array converts sunlight into electricity, but the heat on and behind the module is<br \/>\n normally lost to the air. A PVT module changes the energy logic: the front PV layer generates<br \/>\n electricity, while the rear thermal layer removes heat and transfers it to a water or<br \/>\n water-glycol circuit.<\/p>\n<p>For projects with limited roof space, this matters. Instead of choosing between PV panels and<br \/>\n solar thermal collectors, a PVT-E panel allows one roof surface to support <strong>two useful<br \/>\n energy streams<\/strong>: electricity for building loads, grid connection or battery systems;<br \/>\n and low-temperature heat for hot water preheating, pool heating, process preheating or heat pump<br \/>\n source\/buffer loops.<\/p>\n<p>SOLETKS positions PVT-E as a balanced PV-T option: electricity generation remains the primary<br \/>\n value, while auxiliary heat recovery improves the total useful energy harvested from the same<br \/>\n installation area.<\/p>\n<\/p><\/div>\n<figure class=\"split-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E-0001.jpg\" alt=\"PVT-E hybrid photovoltaic thermal module by SOLETKS\" loading=\"lazy\"><figcaption>PVT-E Hybrid Photovoltaic Thermal Module \u2014 SOLETKS<\/figcaption><\/figure>\n<\/p><\/div>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Decision Factor<\/th>\n<th>Standard PV Only<\/th>\n<th>PVT-E Type Solar Panel<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Main output<\/td>\n<td>Electricity<\/td>\n<td>Electricity + recovered heat<\/td>\n<\/tr>\n<tr>\n<td>Thermal circuit<\/td>\n<td>No<\/td>\n<td>Yes \u2014 water or water-glycol loop<\/td>\n<\/tr>\n<tr>\n<td>Storage tank \/ buffer<\/td>\n<td>Not required<\/td>\n<td>Usually required<\/td>\n<\/tr>\n<tr>\n<td>Heat pump integration<\/td>\n<td>Electrical only<\/td>\n<td>Can support source \/ buffer \/ preheat design<\/td>\n<\/tr>\n<tr>\n<td>Roof productivity<\/td>\n<td>Electrical yield only<\/td>\n<td>Higher total useful energy per m\u00b2 when heat is used<\/td>\n<\/tr>\n<tr>\n<td>Best use case<\/td>\n<td>Power-only roofs<\/td>\n<td>Limited-roof projects needing power and usable heat<\/td>\n<\/tr>\n<tr>\n<td>Main risk<\/td>\n<td>Lower system complexity<\/td>\n<td>Recovered heat has little value without a real heat load<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"technical-data\">\n <span class=\"sec-label\">Section 02<\/span><\/p>\n<h2 class=\"section-h\">Technical Specifications \u2014 Verified Model Data<\/h2>\n<div class=\"data-note\">\n <span class=\"dn-tag\">Verified Datasheet Data<\/span><br \/>\n The following specifications are sourced from the SOLETKS official PVT-E product pages. Values apply to<br \/>\n the PVT-E Thermoelectric Assembly model. Confirm the final shipped model against the current SOLETKS<br \/>\n PVT-E SPEC PACK before inverter selection, hydraulic design or final quotation.\n <\/div>\n<p> <\/p>\n<div class=\"spec-group\">\n<h3>Mechanical Dimensions<\/h3>\n<div class=\"table-wrap\" style=\"margin-top:0;border-radius: 0 0 var(--r-md) var(--r-md);\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th class=\"r\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Outline dimensions (mm)<\/td>\n<td class=\"val\">2279 \u00d7 1134 \u00d7 45<\/td>\n<\/tr>\n<tr>\n<td>Glass size (mm)<\/td>\n<td class=\"val\">2273 \u00d7 1128<\/td>\n<\/tr>\n<tr>\n<td>Weight (kg)<\/td>\n<td class=\"val\">39<\/td>\n<\/tr>\n<tr>\n<td>Back panel material<\/td>\n<td class=\"val\">Color coated panels<\/td>\n<\/tr>\n<tr>\n<td>Packing quantity<\/td>\n<td class=\"val\">28 units\/tray \u00b7 616 units\/40ft container<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"spec-group\">\n<h3>Electrical Performance (STC)<\/h3>\n<div class=\"table-wrap\" style=\"margin-top:0;border-radius: 0 0 var(--r-md) var(--r-md);\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th class=\"r\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Maximum power \u2014 P<sub>max<\/sub> (STC)<\/td>\n<td class=\"val\">580 W<\/td>\n<\/tr>\n<tr>\n<td>Cell type<\/td>\n<td class=\"val\">N-type TOPCon monocrystalline<\/td>\n<\/tr>\n<tr>\n<td>Cell count<\/td>\n<td class=\"val\">144 cells (6 \u00d7 24)<\/td>\n<\/tr>\n<tr>\n<td>Module efficiency<\/td>\n<td class=\"val\">22.44%<\/td>\n<\/tr>\n<tr>\n<td>Open-circuit voltage \u2014 V<sub>oc<\/sub><\/td>\n<td class=\"val\">51.1 V<\/td>\n<\/tr>\n<tr>\n<td>Max. power point voltage \u2014 V<sub>mp<\/sub><\/td>\n<td class=\"val\">44.45 V<\/td>\n<\/tr>\n<tr>\n<td>Short-circuit current \u2014 I<sub>sc<\/sub><\/td>\n<td class=\"val\">14.31 A<\/td>\n<\/tr>\n<tr>\n<td>Max. power point current \u2014 I<sub>mp<\/sub><\/td>\n<td class=\"val\">13.05 A<\/td>\n<\/tr>\n<tr>\n<td>Working temperature range<\/td>\n<td class=\"val\">\u221240\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Maximum system voltage<\/td>\n<td class=\"val\">1500 V (T\u00dcV)<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"spec-group\">\n<h3>Thermal Performance<\/h3>\n<div class=\"table-wrap\" style=\"margin-top:0;border-radius: 0 0 var(--r-md) var(--r-md);\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th class=\"r\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Peak light-thermal power (W)<\/td>\n<td class=\"val\">1180 W<\/td>\n<\/tr>\n<tr>\n<td>Combined solar utilization<\/td>\n<td class=\"val\">Up to 80%<\/td>\n<\/tr>\n<tr>\n<td>Dielectric capacity (L)<\/td>\n<td class=\"val\">1.2 L<\/td>\n<\/tr>\n<tr>\n<td>Heat-transfer medium<\/td>\n<td class=\"val\">Propylene glycol \/ glycol \/ water<\/td>\n<\/tr>\n<tr>\n<td>Working pressure (MPa)<\/td>\n<td class=\"val\">0.6 MPa<\/td>\n<\/tr>\n<tr>\n<td>Interface size & quantity<\/td>\n<td class=\"val\">G1\/2 external thread \u00d7 2<\/td>\n<\/tr>\n<tr>\n<td>Heat exchanger structure<\/td>\n<td class=\"val\">Tubular plate type<\/td>\n<\/tr>\n<tr>\n<td>Heat exchanger material<\/td>\n<td class=\"val\">Red copper<\/td>\n<\/tr>\n<tr>\n<td>Operating mode<\/td>\n<td class=\"val\">Interstitial expansion<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<div class=\"note-box\">\n <strong>Confirm on quotation:<\/strong> Temperature coefficient of<br \/>\n P<sub>max<\/sub>\/V<sub>oc<\/sub>\/I<sub>sc<\/sub>, recommended hydraulic flow rate per module, pressure drop<br \/>\n at design flow, wind\/snow load rating, mounting clamp zones, stagnation temperature, glycol<br \/>\n concentration for freeze protection, max. modules per hydraulic string, full warranty terms (PV \/<br \/>\n thermal \/ workmanship) and applicable certificate for the exact shipped configuration.\n <\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"advantages\">\n <span class=\"sec-label\">Section 03<\/span><\/p>\n<h2 class=\"section-h\">Four Core Advantages of PVT-E<\/h2>\n<div class=\"feat-grid\">\n<div class=\"feat-card\">\n<div class=\"feat-num\">01<\/div>\n<h3>Efficiency Advantage<\/h3>\n<p>Combined solar utilization reaches <strong>up to 80%<\/strong>. Active thermal extraction<br \/>\n maintains PV cell temperature in the optimal 25\u201345\u00b0C range \u2014 for every 1\u00b0C reduction, electrical<br \/>\n efficiency improves by ~0.3\u20130.5%.<\/p>\n<\/p><\/div>\n<div class=\"feat-card\">\n<div class=\"feat-num\">02<\/div>\n<h3>Space Advantage<\/h3>\n<p>Produces electricity and heat from the same surface area \u2014 reducing required installation area by<br \/>\n approximately <strong>50%<\/strong> versus separate PV + collector systems.<\/p>\n<\/p><\/div>\n<div class=\"feat-card\">\n<div class=\"feat-num\">03<\/div>\n<h3>Environmental Advantage<\/h3>\n<p>Zero direct carbon emissions during operation. Replaces fossil-fuel heating and grid electricity,<br \/>\n contributing to <strong>measurable CO\u2082 reduction<\/strong> across building and industrial<br \/>\n applications.<\/p>\n<\/p><\/div>\n<div class=\"feat-card\">\n<div class=\"feat-num\">04<\/div>\n<h3>Economic Advantage<\/h3>\n<p>Two energy streams from one investment: reduced electricity bills and reduced heating fuel costs.<br \/>\n Lower cell operating temperature extends module lifespan and <strong>increases lifetime<br \/>\n generation by 16%+<\/strong>.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"how-it-works\">\n <span class=\"sec-label\">Section 04<\/span><\/p>\n<h2 class=\"section-h\">How a PVT-E Panel Works<\/h2>\n<div class=\"split rev\">\n<div>\n<h3>1 \u2014 Electrical Side<\/h3>\n<p>N-type TOPCon cells on the front face generate DC electricity. String voltage, inverter matching,<br \/>\n DC protection, grounding, insulation, cable routing and grid requirements follow standard PV<br \/>\n engineering practice, with the added consideration that module temperature stays lower \u2014<br \/>\n supporting consistent output.<\/p>\n<h3 style=\"margin-top:1.4rem\">2 \u2014 Thermal Side<\/h3>\n<p>A red copper tubular-plate heat exchanger behind the PV layer removes heat from the module and<br \/>\n transfers it into a circulating fluid loop. With 0.6 MPa working pressure and G1\/2 interface<br \/>\n connections, the thermal circuit is ready for standard closed-loop hydraulic design. Heat can be<br \/>\n routed to: DHW preheat tanks; heat pump source or buffer loops; swimming pool heat exchangers;<br \/>\n low-temperature process or washing loads; and buffer tanks for later use.<\/p>\n<h3 style=\"margin-top:1.4rem\">3 \u2014 System Side<\/h3>\n<p>PVT-E should be designed as a system, not a commodity panel. A complete project includes PVT<br \/>\n panels, mounting hardware, inverter, pump station, controller, sensors, expansion vessel,<br \/>\n insulated piping, heat exchanger, storage tank, backup heating and monitoring.<\/p>\n<\/p><\/div>\n<figure class=\"split-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/ueditor\/504\/upload\/image\/20260107\/1767751298610891.jpg.webp\" alt=\"PVT-E hybrid module system diagram electricity and heat circuit\" loading=\"lazy\"><figcaption>PVT-E integrated system overview \u2014 thermal + electrical coupling design<\/figcaption><\/figure>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"table-wrap\" style=\"margin-top:2rem\">\n<table>\n<thead>\n<tr>\n<th>Key Technology<\/th>\n<th>What It Does<\/th>\n<th>Result<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>High-Efficiency Dual Optimization<\/strong><\/td>\n<td>PID-based fluid parameter control + transient thermal-electrical coupling model<\/td>\n<td class=\"note\">~22.4% electrical efficiency + >35% thermal efficiency<\/td>\n<\/tr>\n<tr>\n<td><strong>Spectral Selective Coating (PVD\/CVD)<\/strong><\/td>\n<td>Multilayer coatings utilize a wide solar wavelength range<\/td>\n<td class=\"note\">Improved optical energy conversion across spectrum<\/td>\n<\/tr>\n<tr>\n<td><strong>Vacuum Bonding + Heat Spreader<\/strong><\/td>\n<td>Optimized material matching reduces interfacial thermal resistance<\/td>\n<td class=\"note\">Better heat transfer; structural stability maintained<\/td>\n<\/tr>\n<tr>\n<td><strong>Low Thermal Loss (Aerogel Composite)<\/strong><\/td>\n<td>Staggered insulation + selective coatings + vacuum packaging<\/td>\n<td class=\"note\">Significantly reduced convective and radiative loss<\/td>\n<\/tr>\n<tr>\n<td><strong>Vacuum Lamination + Thermal Curing<\/strong><\/td>\n<td>Eliminates micro-cracks, bubbles and delamination<\/td>\n<td class=\"note\">Long-term reliability; lifetime generation +16%+<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"useful-heat\">\n <span class=\"sec-label\">Section 05<\/span><\/p>\n<h2 class=\"section-h\">The Most Important Design Rule: Useful Heat<\/h2>\n<div class=\"split\">\n<div>\n<p>The most common PVT-E mistake is counting recovered heat without confirming where it goes.<br \/>\n <strong>Useful heat<\/strong> depends on: local irradiation and ambient temperature; roof<br \/>\n orientation, tilt and shading; flow rate and operating temperature; storage tank volume and heat<br \/>\n exchanger sizing; load timing across the day and seasons; pipe insulation and hydraulic design;<br \/>\n and backup heater or heat pump control logic.<\/p>\n<p>PVT-E is strongest when recovered heat can be used at low or moderate temperatures. That makes it<br \/>\n especially suitable for hot water preheating, pool heating, heat pump support and<br \/>\n low-temperature process preheating. If a project needs high final water temperature, PVT-E<br \/>\n reduces the temperature lift before a boiler or heat pump \u2014 but should not be sold as the sole<br \/>\n heat source without energy simulation.<\/p>\n<\/p><\/div>\n<figure class=\"split-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/ueditor\/504\/upload\/image\/20260107\/1767756756905060.jpg.webp\" alt=\"PVT-E installed application factory quality manufacturing\" loading=\"lazy\"><figcaption>SOLETKS PVT-E manufacturing and quality validation facility<\/figcaption><\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"applications\">\n <span class=\"sec-label\">Section 06<\/span><\/p>\n<h2 class=\"section-h\">Recommended System Configurations<\/h2>\n<div class=\"app-list\">\n<div class=\"app-item\">\n<div class=\"app-item-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2025-10\/PVT-E0001.jpg\" alt=\"PVT-E domestic hot water preheating system\" loading=\"lazy\">\n <\/div>\n<div class=\"app-item-body\">\n <span class=\"app-num\">Config 01<\/span><\/p>\n<h3>PVT-E + Domestic Hot Water Preheating<\/h3>\n<p>The PVT-E loop heats a preheat tank before an electric heater, gas boiler or heat pump water<br \/>\n heater. This reduces the temperature lift required from backup heating and can significantly<br \/>\n reduce daily energy consumption.<\/p>\n<p style=\"margin-top:.6rem\"><strong>Best for:<\/strong> Villas, apartments, hotels, gyms,<br \/>\n schools, staff facilities and small commercial buildings.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"app-item\">\n<div class=\"app-item-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2025-10\/PVT-E001.jpg\" alt=\"PVT-E heat pump source buffer loop integration\" loading=\"lazy\">\n <\/div>\n<div class=\"app-item-body\">\n <span class=\"app-num\">Config 02<\/span><\/p>\n<h3>PVT-E + Heat Pump Source or Buffer Loop<\/h3>\n<p>The PVT-E loop supplies low-temperature heat to a buffer tank or heat pump source loop. The<br \/>\n design must match the heat pump’s flow rate, source temperature, control sequence and<br \/>\n freeze-protection requirements. The PV side simultaneously offsets compressor electricity.\n <\/p>\n<p style=\"margin-top:.6rem\"><strong>Best for:<\/strong> Hybrid heat pump systems, low-temperature<br \/>\n heating projects and retrofits with limited roof area.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"app-item\">\n<div class=\"app-item-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E03.jpg\" alt=\"PVT-E pool heating system villa resort\" loading=\"lazy\">\n <\/div>\n<div class=\"app-item-body\">\n <span class=\"app-num\">Config 03<\/span><\/p>\n<h3>PVT-E + Pool Heating<\/h3>\n<p>Pools are a good thermal match: the required temperature is relatively low and the load can<br \/>\n absorb daytime solar heat efficiently. PVT-E delivers electricity and pool heat from the<br \/>\n same roof area, maximizing value from limited space.<\/p>\n<p style=\"margin-top:.6rem\"><strong>Best for:<\/strong> Villas, resorts, hotels, gyms, sports<br \/>\n centers and residential communities.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"config-grid\">\n<div class=\"config-card\">\n<div class=\"config-icon\">\ud83c\udfed<\/div>\n<h4>Process Preheating<\/h4>\n<p>Recovered heat for washing, cleaning, canteen hot water or low-temperature boiler preheating in<br \/>\n factories, farms and food-service buildings.<\/p>\n<p> <span class=\"config-fit\">Industrial \/ Agri<\/span>\n <\/div>\n<div class=\"config-card\">\n<div class=\"config-icon\">\ud83d\udd0b<\/div>\n<h4>Buffer Tank + Backup<\/h4>\n<p>Buffer tank stores daytime heat. A boiler, electric heater or heat pump completes temperature<br \/>\n when solar is insufficient \u2014 handles morning\/evening peaks.<\/p>\n<p> <span class=\"config-fit\">Commercial \/ Multi-Load<\/span>\n <\/div>\n<div class=\"config-card\">\n<div class=\"config-icon\">\ud83c\udfd7<\/div>\n<h4>PVT-E + Battery + EV<\/h4>\n<p>PV side integrated with battery and EV charging via hybrid inverter, thermal side handling DHW or<br \/>\n pool \u2014 maximizing roof value per m\u00b2.<\/p>\n<p> <span class=\"config-fit\">Premium Residential<\/span>\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"when-better\">\n <span class=\"sec-label\">Section 07<\/span><\/p>\n<h2 class=\"section-h\">When Standard PV or Solar Thermal May Be Better<\/h2>\n<p>PVT-E is not always the best answer. Buyers trust a manufacturer more when the page explains the limits<br \/>\n clearly.<\/p>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Situation<\/th>\n<th>Better Choice<\/th>\n<th>Reason<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Project only needs electricity<\/td>\n<td>Standard PV<\/td>\n<td class=\"note\">Simpler, cheaper and easier to install.<\/td>\n<\/tr>\n<tr>\n<td>No daily heat load exists<\/td>\n<td>Standard PV<\/td>\n<td class=\"note\">Recovered heat will not create value.<\/td>\n<\/tr>\n<tr>\n<td>Hot water is the main ROI driver<\/td>\n<td>PVT-T \/ TP\/V Pro \/ Solar Thermal<\/td>\n<td class=\"note\">A thermal-priority product may deliver stronger ROI.<\/td>\n<\/tr>\n<tr>\n<td>Site cannot support pipes, tanks or pump station<\/td>\n<td>Standard PV<\/td>\n<td class=\"note\">PVT-E requires a hydraulic system to function.<\/td>\n<\/tr>\n<tr>\n<td>Buyer wants only a commodity panel price<\/td>\n<td>Standard PV or separate thermal<\/td>\n<td class=\"note\">PVT value depends on system design, not unit price alone.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"comparison\">\n <span class=\"sec-label\">Section 08<\/span><\/p>\n<h2 class=\"section-h\">PVT-E vs PVT-T vs TP\/V Pro \u2014 How to Choose<\/h2>\n<div class=\"compare-wrap\">\n<div class=\"compare-card active\">\n <span class=\"compare-badge\">This Page<\/span><\/p>\n<h3>PVT-E<\/h3>\n<p> <span class=\"c-sub\">Electricity-First Hybrid<\/span><\/p>\n<div class=\"c-row\">PV output is the main value \u2014 heat recovery adds project value.<\/div>\n<div class=\"c-row\">Residential rooftops, apartments, commercial roofs.<\/div>\n<div class=\"c-row\">Best when electrical output leads and heat is a secondary benefit.<\/div>\n<div class=\"c-row\">N-type TOPCon 580 W | 22.44% efficiency | Up to 80% combined.<\/div>\n<\/p><\/div>\n<div class=\"compare-card\">\n<h3>PVT-T<\/h3>\n<p> <span class=\"c-sub\">Thermal-Focused Hybrid<\/span><\/p>\n<div class=\"c-row\">Higher heat capture while maintaining power generation.<\/div>\n<div class=\"c-row\">Hotels, hospitals, schools, pools, large hot-water users.<\/div>\n<div class=\"c-row\">Best when thermal load drives ROI but PV still needed.<\/div>\n<p> <a class=\"c-link\" href=\"\/products\/pvt-solar-panel\/pvt-t-type-solar-panel\/\">Learn about PVT-T \u2192<\/a>\n <\/div>\n<div class=\"compare-card\">\n<h3>TP\/V Pro<\/h3>\n<p> <span class=\"c-sub\">Premium Engineering Hybrid<\/span><\/p>\n<div class=\"c-row\">Upgraded thermal management + advanced cooling design.<\/div>\n<div class=\"c-row\">Premium developers, ESG buildings, heat pump systems, Tianjin-scale projects.\n <\/div>\n<div class=\"c-row\">Best for highest total energy yield with full system integration.<\/div>\n<p> <a class=\"c-link\" href=\"\/products\/pvt-solar-panel\/tp-v-pro-type-solar-panel\/\">Learn about TP\/V Pro<br \/>\n \u2192<\/a>\n <\/div>\n<\/p><\/div>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Buyer Question<\/th>\n<th>PVT-E<\/th>\n<th>PVT-T<\/th>\n<th>TP\/V Pro<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Electricity the main value?<\/td>\n<td>\u2713 Yes<\/td>\n<td>Medium<\/td>\n<td>Medium\u2013High<\/td>\n<\/tr>\n<tr>\n<td>Heat the main value?<\/td>\n<td>Secondary<\/td>\n<td>\u2713 Yes<\/td>\n<td>\u2713 Yes + premium integration<\/td>\n<\/tr>\n<tr>\n<td>Basic residential \/ commercial roof?<\/td>\n<td>\u2713 Strong fit<\/td>\n<td>Possible<\/td>\n<td>Usually over-specified<\/td>\n<\/tr>\n<tr>\n<td>Hotel, hospital, pool \u2014 high daily heat demand?<\/td>\n<td>Possible<\/td>\n<td>\u2713 Stronger<\/td>\n<td>\u2713 Strongest for premium<\/td>\n<\/tr>\n<tr>\n<td>ESG \/ demonstration building?<\/td>\n<td>Possible<\/td>\n<td>Possible<\/td>\n<td>\u2713 Strongest positioning<\/td>\n<\/tr>\n<tr>\n<td>Heat pump integration central?<\/td>\n<td>Source\/preheat support<\/td>\n<td>Strong<\/td>\n<td>\u2713 Strongest for hybrid systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"technical-proof\">\n <span class=\"sec-label\">Section 09<\/span><\/p>\n<h2 class=\"section-h\">SOLETKS Thermal Engineering Proof<\/h2>\n<p>SOLETKS publishes report-based data for its certified STK-FPC flat-plate collector series via Solar<br \/>\n Keymark annex issued by DIN CERTCO (2024-12-31), referencing Intertek test report<br \/>\n <strong>240531098GZU-001<\/strong>. This is not a PVT-E rating \u2014 it is evidence of SOLETKS’ report-backed<br \/>\n thermal engineering capability. Serious PVT-E buyers should request the same level of documentation for<br \/>\n the PVT-E model: certificate path, test report reference, pressure rating, yield assumptions and<br \/>\n performance curves.<\/p>\n<div class=\"stk-panel\">\n<h3>STK-FPC Reference \u2014 Solar Keymark Annex Data<\/h3>\n<p>Collector series: STK-FPC | Certifying body: DIN CERTCO | Test reference: Intertek 240531098GZU-001\n <\/p>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th class=\"r\">Public Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u03b7\u2080,b (optical efficiency)<\/td>\n<td class=\"val\">0.774<\/td>\n<\/tr>\n<tr>\n<td>a1 \u2014 first-order heat-loss coefficient<\/td>\n<td class=\"val\">1.64 W\/(m\u00b2\u00b7K)<\/td>\n<\/tr>\n<tr>\n<td>a2 \u2014 second-order heat-loss coefficient<\/td>\n<td class=\"val\">0.077 W\/(m\u00b2\u00b7K\u00b2)<\/td>\n<\/tr>\n<tr>\n<td>Maximum operating pressure<\/td>\n<td class=\"val\">1000 kPa<\/td>\n<\/tr>\n<tr>\n<td>Standard gross sizes<\/td>\n<td class=\"val\">2.00 \/ 2.50 \/ 3.00 m\u00b2<\/td>\n<\/tr>\n<tr>\n<td>Dimensions in series (L \u00d7 W \u00d7 H mm)<\/td>\n<td class=\"val\">2000\u00d71000\u00d780 | 2000\u00d71250\u00d780 | 2000\u00d71500\u00d780<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"projects\">\n <span class=\"sec-label\">Section 10<\/span><\/p>\n<h2 class=\"section-h\">SOLETKS Project References<\/h2>\n<p>The following SOLETKS references prove hybrid and thermal project execution capability. They should be<br \/>\n presented as company\/project evidence, not as proof that every listed project used PVT-E panels<br \/>\n specifically. For procurement, ask SOLETKS for PVT-E-specific reference photos, installed panel count,<br \/>\n system diagram and annual output data.<\/p>\n<div class=\"proof-grid\">\n<div class=\"proof-card\">\n<div class=\"proof-card-img\" style=\"background:linear-gradient(135deg, #1a2b3c, #0d1a2a); display:flex; align-items:center; justify-content:center;\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVE-E9.jpg\" alt=\"Tianjin School TPV Pro heat pump project 3000 sqm\" loading=\"lazy\" style=\"width:100%;height:100%;object-fit:cover;\">\n <\/div>\n<div class=\"proof-card-body\">\n <span class=\"proof-meta\">2024 \u00b7 Tianjin \u00b7 3,000 m\u00b2<\/span><\/p>\n<h4>Tianjin School TPV Pro + Heat Pump Project<\/h4>\n<p>TPV Pro + heat pump system meets student heating needs while generating on-site electricity \u2014<br \/>\n demonstrates hybrid solar + heat pump integration at project scale.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"proof-card\">\n<div class=\"proof-card-img\" style=\"background:linear-gradient(135deg, #1a2b3c, #0d1a2a);\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2025-10\/PVT-E.jpg\" alt=\"APEC Summit Hotel hot water system Beijing\" loading=\"lazy\" style=\"width:100%;height:100%;object-fit:cover;\">\n <\/div>\n<div class=\"proof-card-body\">\n <span class=\"proof-meta\">2014 \u00b7 Beijing \u00b7 50 t\/day<\/span><\/p>\n<h4>APEC Summit Hotel Hot Water System<\/h4>\n<p>Saves 150,000 kWh annually; reduces CO\u2082 by 74 tons\/year. Relevant to hotel, hospitality and<br \/>\n commercial hot-water projects.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"proof-card\">\n<div class=\"proof-card-img\" style=\"overflow:hidden;\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E-0001.jpg\" alt=\"Florida Resort villa hot water solar project\" loading=\"lazy\" style=\"width:100%;height:100%;object-fit:cover;\">\n <\/div>\n<div class=\"proof-card-body\">\n <span class=\"proof-meta\">2022 \u00b7 Florida, USA \u00b7 200 L\/day per villa<\/span><\/p>\n<h4>Florida Resort Villa Hot Water Project<\/h4>\n<p>Flat-plate water heaters provide daily hot water for each resort villa \u2014 relevant to villas,<br \/>\n resorts and distributed domestic DHW demand.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"proof-card\">\n<div class=\"proof-card-img\" style=\"overflow:hidden;\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E03.jpg\" alt=\"Harz Church hot water Germany engineering collectors\" loading=\"lazy\" style=\"width:100%;height:100%;object-fit:cover;\">\n <\/div>\n<div class=\"proof-card-body\">\n <span class=\"proof-meta\">2021 \u00b7 Germany \u00b7 22 t\/day<\/span><\/p>\n<h4>Harz Church Hot Water Project<\/h4>\n<p>Engineering-grade collectors in series\/parallel configuration provide reliable hot-water<br \/>\n supply \u2014 relevant to European-style commercial DHW design.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"sizing\">\n <span class=\"sec-label\">Section 11<\/span><\/p>\n<h2 class=\"section-h\">Sizing Guide: From Heat Load to System Concept<\/h2>\n<p>Start with the daily heat demand before selecting a panel count:<\/p>\n<div class=\"formula-box\">\n <span class=\"f-eq\">Daily heat demand (kWh) = Volume (L) \u00d7 \u0394T (\u00b0C) \u00d7 0.001163<\/span><br \/>\n <span class=\"f-note\">Where \u0394T = target outlet temperature \u2212 cold-water inlet temperature<\/span><br \/>\n <br \/>\n <span class=\"f-note\">Example: 2,000 L\/day | Inlet 15\u00b0C \u2192 Target 40\u00b0C<\/span><br \/>\n <span class=\"f-eq\">2,000 \u00d7 (40 \u2212 15) \u00d7 0.001163 = 58.15 kWh\/day<\/span><br \/>\n <span class=\"f-note\">This is the DHW load only \u2014 not the solar output. Panel count requires irradiation,<br \/>\n efficiency curve, solar fraction, storage and backup strategy.<\/span>\n <\/div>\n<p>To estimate panel count, SOLETKS needs: project country and city; roof area, tilt, orientation, shading;<br \/>\n selected PVT-E model; thermal output curve; target solar fraction; storage tank volume; and heat pump or<br \/>\n boiler backup strategy. A reliable quotation should return a <strong>system concept<\/strong>, not only a<br \/>\n panel price.<\/p>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Input to Provide<\/th>\n<th>Example Reference<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Building type and application<\/td>\n<td class=\"note\">Hotel, school, hospital, villa, apartment, factory<\/td>\n<\/tr>\n<tr>\n<td>Project country and city<\/td>\n<td class=\"note\">For irradiation zone and freeze risk<\/td>\n<\/tr>\n<tr>\n<td>Available roof area, tilt, orientation, shading<\/td>\n<td class=\"note\">m\u00b2 + photo or drawing<\/td>\n<\/tr>\n<tr>\n<td>Target PV capacity or electricity offset<\/td>\n<td class=\"note\">kW or % of consumption<\/td>\n<\/tr>\n<tr>\n<td>Daily hot water volume and outlet temperature<\/td>\n<td class=\"note\">m\u00b3\/day @ target \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Cold-water inlet temperature<\/td>\n<td class=\"note\">Annual average or seasonal range<\/td>\n<\/tr>\n<tr>\n<td>Existing boiler, heat pump, tank, BEMS<\/td>\n<td class=\"note\">Capacity, fuel type, age<\/td>\n<\/tr>\n<tr>\n<td>Pool, space heating, process preheating<\/td>\n<td class=\"note\">Yes \/ No + volume and temperature<\/td>\n<\/tr>\n<tr>\n<td>Local minimum outdoor temperature<\/td>\n<td class=\"note\">For freeze protection design<\/td>\n<\/tr>\n<tr>\n<td>Required certifications and market standards<\/td>\n<td class=\"note\">Solar Keymark, CE, UL, local code<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"commissioning\">\n <span class=\"sec-label\">Section 12<\/span><\/p>\n<h2 class=\"section-h\">Installation & Commissioning Checklist<\/h2>\n<p>Commission PVT-E as both a PV system and a thermal system. Skipping thermal commissioning makes a good<br \/>\n PVT-E panel underperform.<\/p>\n<div style=\"display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-top:1.4rem\">\n<div>\n<h3 style=\"font-size:1rem;color:var(--teal);margin-bottom:.8rem\">Electrical Commissioning<\/h3>\n<div class=\"checklist\">\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Confirm string voltage and inverter compatibility<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Check DC cable routing, connector quality and<br \/>\n polarity<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Verify insulation, grounding and protection<br \/>\n devices<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Check shading, mismatch and monitoring data<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Confirm local electrical compliance and grid<br \/>\n requirements<\/span>\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div>\n<h3 style=\"font-size:1rem;color:var(--gold-2);margin-bottom:.8rem\">Thermal Commissioning<\/h3>\n<div class=\"checklist\">\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Pressure-test the hydraulic loop<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Confirm flow rate for each branch<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Purge air and verify pump station \/ controller<br \/>\n logic<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Check expansion vessel sizing and relief valve<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Confirm glycol concentration or drain-back<br \/>\n strategy<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Test backup heater or heat pump control sequence<\/span>\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"faq\">\n <span class=\"sec-label\">Section 13<\/span><\/p>\n<h2 class=\"section-h\">Frequently Asked Questions<\/h2>\n<div class=\"faq\">\n<details open>\n<summary>What is a PVT-E type solar panel?<\/summary>\n<div class=\"faq-body\">\n<p>A PVT-E type solar panel is a photovoltaic-thermal module that prioritizes PV electricity<br \/>\n generation while recovering usable low-temperature heat from the back of the module. It is<br \/>\n used when a project needs both electricity and heat from limited roof area \u2014 particularly<br \/>\n domestic hot water preheating, heat pump support, pool heating and commercial hybrid solar<br \/>\n projects.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>Is PVT-E better than standard PV?<\/summary>\n<div class=\"faq-body\">\n<p>PVT-E is better only when the recovered heat can be used. For power-only projects, standard<br \/>\n PV is simpler and cheaper. For projects with domestic hot water, pool heating, process<br \/>\n preheating or heat pump support, PVT-E can increase total useful energy per square meter of<br \/>\n roof \u2014 combining up to 80% overall solar utilization vs. typically 18\u201322% for PV alone.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What electrical output does PVT-E deliver?<\/summary>\n<div class=\"faq-body\">\n<p>The PVT-E Thermoelectric Assembly model delivers <strong>580 W at STC<\/strong> from N-type<br \/>\n TOPCon cells with 22.44% module efficiency, V<sub>oc<\/sub> of 51.1 V, V<sub>mp<\/sub> of<br \/>\n 44.45 V, I<sub>sc<\/sub> of 14.31 A and I<sub>mp<\/sub> of 13.05 A. Maximum system voltage is<br \/>\n 1500 V (T\u00dcV). Confirm the current model datasheet before inverter selection.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What temperature can PVT-E supply?<\/summary>\n<div class=\"faq-body\">\n<p>PVT-E should be treated as a low-to-moderate temperature heat recovery product. The useful<br \/>\n temperature depends on irradiation, ambient conditions, flow rate, storage, heat exchanger<br \/>\n design and load temperature. For high final water temperatures, use PVT-E for preheating and<br \/>\n keep a boiler or heat pump as backup \u2014 do not rely on it as the sole heat source without<br \/>\n simulation.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>Can PVT-E work with heat pumps?<\/summary>\n<div class=\"faq-body\">\n<p>Yes. PVT-E can support a heat pump source loop, buffer tank or hot water preheating design.<br \/>\n The system must be engineered around source temperature, flow rate, freeze protection,<br \/>\n storage volume and control sequence. The PV side simultaneously offsets compressor<br \/>\n electricity, improving the overall system COP economics.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What is the main design risk for PVT-E projects?<\/summary>\n<div class=\"faq-body\">\n<p>Unused heat. A PVT-E project must confirm where the recovered heat goes, when it is used, how<br \/>\n it is stored and whether the building has enough heat demand across seasons. Without a real<br \/>\n daily heat load, the PVT-E module reduces to an expensive PV panel and the project economics<br \/>\n deteriorate.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What is the difference between PVT-E and PVT-T?<\/summary>\n<div class=\"faq-body\">\n<p>PVT-E is the balanced or electricity-first option: PV output remains the main value and heat<br \/>\n recovery adds extra energy value. <a href=\"\/products\/pvt-solar-panel\/pvt-t-type-solar-panel\/\">PVT-T<\/a> gives more emphasis<br \/>\n to thermal output while still generating electricity \u2014 it is better when the thermal load<br \/>\n drives the project ROI.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What is the difference between PVT-E and TP\/V Pro?<\/summary>\n<div class=\"faq-body\">\n<p><a href=\"\/products\/pvt-solar-panel\/tp-v-pro-type-solar-panel\/\">TP\/V Pro<\/a> is positioned as<br \/>\n a premium engineering hybrid with upgraded thermal management, cooling design and higher<br \/>\n total energy-yield positioning. PVT-E is usually more suitable for straightforward<br \/>\n residential and commercial roofs where electricity is the main priority and the project does<br \/>\n not require TP\/V Pro’s premium heat-pump or storage integration architecture.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What certifications should buyers ask for?<\/summary>\n<div class=\"faq-body\">\n<p>Request the current PVT-E datasheet, product certificate, test report reference, Solar<br \/>\n Keymark or applicable market certificate, CE documentation, ISO 9001\/14001\/45001 system<br \/>\n certificates, IEC 61215\/61730 compliance, installation manual and warranty terms (PV side,<br \/>\n thermal side and workmanship split). Requirements vary by market. Visit the <a href=\"\/company\/quality-assurance\/\">SOLETKS Quality Assurance page<\/a> for current<br \/>\n certification details.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What information is needed for a PVT-E quote?<\/summary>\n<div class=\"faq-body\">\n<p>Send project location, building type, roof area, roof angle\/orientation, shading, target PV<br \/>\n capacity, daily hot-water demand, required water temperature, existing heat pump or boiler,<br \/>\n storage details, local minimum outdoor temperature, required certifications and installation<br \/>\n drawings or photos. A strong inquiry enables SOLETKS to return a system concept, not only a<br \/>\n unit price.<\/p>\n<\/p><\/div>\n<\/details><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"request-spec-pack\">\n<div class=\"cta-band\">\n <span class=\"sec-label\" style=\"margin-bottom:.8rem\">Get Started<\/span><\/p>\n<h2 class=\"section-h\">Request PVT-E System Design & SPEC PACK<\/h2>\n<p>Send SOLETKS your project location, available roof area, electricity target, daily hot water demand,<br \/>\n required temperature and existing heating system. SOLETKS can confirm whether <strong>PVT-E, PVT-T,<br \/>\n TP\/V Pro, standard PV or a dedicated solar thermal collector<\/strong> is the best fit \u2014 then<br \/>\n return a system concept, datasheet path and quotation basis.<\/p>\n<div class=\"btn-row\">\n <a href=\"\/contact\/\" class=\"btn btn-gold\">Request PVT-E System Design \u2192<\/a><br \/>\n <a href=\"\/products\/pvt-solar-panel\/\" class=\"btn btn-outline\">Browse All PVT Products<\/a>\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"why-soletks\">\n <span class=\"sec-label\">Section 14<\/span><\/p>\n<h2 class=\"section-h\">Why Choose SOLETKS for PVT-E Projects<\/h2>\n<div class=\"split\">\n<div>\n<p>SOLETKS is a clean thermal energy company focused on solar, geothermal and air-energy integration<br \/>\n for building energy, industrial heat and renewable energy applications. Public SOLETKS<br \/>\n information highlights: <strong>7.0 GWth annual production capacity<\/strong>; <strong>117+<br \/>\n patented technologies<\/strong>; <strong>6 production bases and 7 subsidiaries<\/strong>;<br \/>\n service in <strong>50+ countries<\/strong>; and global certifications including Solar Keymark, CE<br \/>\n and ISO systems.<\/p>\n<p>For PVT-E buyers, the biggest advantage is not only the panel. It is the ability to match the<br \/>\n right hybrid solar product to the building’s real energy profile \u2014 and back it up with proper<br \/>\n documentation, system design and commissioning support.<\/p>\n<div class=\"table-wrap\" style=\"margin-top:1.4rem\">\n<table>\n<tbody>\n<tr>\n<td>Annual production capacity<\/td>\n<td class=\"val\">7.0 GWth<\/td>\n<\/tr>\n<tr>\n<td>Patented technologies<\/td>\n<td class=\"val\">117+<\/td>\n<\/tr>\n<tr>\n<td>Production bases<\/td>\n<td class=\"val\">6<\/td>\n<\/tr>\n<tr>\n<td>Countries served<\/td>\n<td class=\"val\">50+<\/td>\n<\/tr>\n<tr>\n<td>Core certifications<\/td>\n<td class=\"note\">Solar Keymark \u00b7 CE \u00b7 ISO 9001\/14001\/45001 \u00b7 IEC 61215 \u00b7 IEC 61730 \u00b7<br \/>\n T\u00dcV \u00b7 UL<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<figure class=\"split-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E03.jpg\" alt=\"SOLETKS PVT-E thermoelectric assembly quality manufacturing\" loading=\"lazy\"><figcaption>SOLETKS PVT-E quality-controlled manufacturing \u2014 85%+ automation rate<\/figcaption><\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"int-links\" style=\"margin-top:3rem\">\n <strong>Related SOLETKS Pages<\/strong><\/p>\n<ul>\n<li><a href=\"\/products\/pvt-solar-panel\/\">PVT Solar Panel Category<\/a><\/li>\n<li><a href=\"\/products\/pvt-hybrid-solar-systems\/\">PVT Hybrid Solar Systems<\/a><\/li>\n<li><a href=\"\/products\/pvt-solar-panel\/pvt-t-type-solar-panel\/\">PVT-T Type Solar Panel<\/a><\/li>\n<li><a href=\"\/products\/pvt-solar-panel\/tp-v-pro-type-solar-panel\/\">TP\/V Pro Type Solar Panel<\/a><\/li>\n<li><a href=\"\/featured-projects\/\">Featured Projects<\/a><\/li>\n<li><a href=\"\/company\/quality-assurance\/\">Quality Assurance<\/a><\/li>\n<li><a href=\"\/contact\/\">Contact SOLETKS<\/a><\/li>\n<\/ul><\/div>\n<p> <\/p>\n<div class=\"section source-notes\" id=\"source-review-notes\">\n <span class=\"sec-label\">Source & Review Notes<\/span><\/p>\n<h2 class=\"section-h\">Standards and Verification Notes<\/h2>\n<p>This guide uses SOLETKS model data for product-specific values. Buyers should request the current<br \/>\n datasheet, certificate list and project-specific engineering calculation before procurement.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.iso.org\/standard\/78801.html\" target=\"_blank\" rel=\"noopener\">ISO 9806:2025<\/a><br \/>\n defines test methods for solar thermal collectors, including hybrid collectors that co-generate heat<br \/>\n and electric power.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/61345\" target=\"_blank\" rel=\"noopener\">IEC<br \/>\n 61215-1:2021<\/a> covers design qualification and type approval requirements for terrestrial PV<br \/>\n modules.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/59803\" target=\"_blank\" rel=\"noopener\">IEC<br \/>\n 61730-1:2023<\/a> covers PV module construction requirements for safe electrical and mechanical<br \/>\n operation.<\/li>\n<li><a href=\"https:\/\/www.dincertco.de\/din-certco\/en\/main-navigation\/products-and-services\/certification-of-products\/environmental-field\/solar-thermal-products\/\" target=\"_blank\" rel=\"noopener\">DIN CERTCO Solar KEYMARK<\/a> explains Solar KEYMARK testing,<br \/>\n factory inspection and certificate renewal context for solar thermal products.<\/li>\n<\/ul>\n<p><strong>Review record:<\/strong> Content reviewed for SEO, AEO readability, schema alignment and<br \/>\n engineering-source discipline on July 1, 2026.<\/p>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"ai-summary\">\n <span class=\"sec-label\">Technical Summary<\/span><\/p>\n<h2>Summary for Buyers & AI Extraction<\/h2>\n<p>SOLETKS PVT-E type solar panels are electricity-first photovoltaic-thermal panels that generate PV<br \/>\n electricity while recovering practical low-temperature heat from the same module surface. The PVT-E<br \/>\n Thermoelectric Assembly model delivers <strong>580 W at STC<\/strong> from N-type TOPCon monocrystalline<br \/>\n cells with <strong>22.44% module efficiency<\/strong>, V<sub>oc<\/sub> 51.1 V, V<sub>mp<\/sub> 44.45 V,<br \/>\n I<sub>sc<\/sub> 14.31 A, I<sub>mp<\/sub> 13.05 A and 1500 V maximum system voltage (T\u00dcV). Thermally, it<br \/>\n delivers <strong>1180 W peak light-thermal power<\/strong> with 0.6 MPa working pressure and a red copper<br \/>\n tubular-plate heat exchanger, achieving <strong>combined solar utilization up to 80%<\/strong>. Module<br \/>\n dimensions are 2279 \u00d7 1134 \u00d7 45 mm; weight 39 kg. PVT-E is best for limited-roof projects with both<br \/>\n electrical demand and usable thermal demand \u2014 domestic hot water preheating, pool heating, heat pump<br \/>\n support and low-temperature process preheating. SOLETKS reports 117+ patented technologies, 7.0 GWth<br \/>\n annual production capacity and service in 50+ countries.<\/p>\n<\/p><\/div>\n<p> <\/main><\/p>\n<p> <br \/>\n <script type=\"application\/ld+json\">\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"Article\",\n \"headline\": \"PVT-E Solar Panel Guide for Hybrid Heat\",\n \"description\": \"SOLETKS PVT-E solar panel guide covering PV output, heat recovery, sizing, PVT-E vs PVT-T, project fit, RFQ data and buyer checks.\",\n \"mainEntityOfPage\": \"https:\/\/service.soletksolar.com\/pvt-e-solar-panel-guide\/\",\n \"image\": \"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E-0001.jpg\",\n \"datePublished\": \"2026-07-01\",\n \"dateModified\": \"2026-07-01\",\n \"author\": {\n \"@type\": \"Organization\",\n \"name\": \"SOLETKS Technical Content Team\"\n },\n \"publisher\": {\n \"@type\": \"Organization\",\n \"name\": \"Shandong Soletks Solar Technology Co., Ltd.\",\n \"url\": \"https:\/\/service.soletksolar.com\/\"\n },\n \"about\": [\"PVT-E solar panel\", \"photovoltaic thermal panel\", \"hybrid solar heat recovery\"]\n}\n<\/script><br \/>\n <script type=\"application\/ld+json\">\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"BreadcrumbList\",\n \"itemListElement\": [\n {\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/service.soletksolar.com\/\"},\n {\"@type\":\"ListItem\",\"position\":2,\"name\":\"Products\",\"item\":\"https:\/\/service.soletksolar.com\/products\/\"},\n {\"@type\":\"ListItem\",\"position\":3,\"name\":\"PVT Solar Panel\",\"item\":\"https:\/\/service.soletksolar.com\/products\/pvt-solar-panel\/\"},\n {\"@type\":\"ListItem\",\"position\":4,\"name\":\"PVT-E Solar Panel Guide\",\"item\":\"https:\/\/service.soletksolar.com\/pvt-e-solar-panel-guide\/\"}\n ]\n}\n<\/script><br \/>\n <script type=\"application\/ld+json\">\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"FAQPage\",\n \"mainEntity\": [\n {\"@type\":\"Question\",\"name\":\"What is a PVT-E type solar panel?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A PVT-E type solar panel is a photovoltaic-thermal module that prioritizes PV electricity generation while recovering usable low-temperature heat from the back of the module. It is used when a project needs both electricity and heat from limited roof area, especially domestic hot water preheating, heat pump support, pool heating and commercial hybrid solar projects.\"}},\n {\"@type\":\"Question\",\"name\":\"What electrical output does PVT-E deliver?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The PVT-E Thermoelectric Assembly model delivers 580 W at STC from N-type TOPCon cells with 22.44% module efficiency, Voc 51.1 V, Vmp 44.45 V, Isc 14.31 A and Imp 13.05 A. Maximum system voltage is 1500 V. Confirm the current model datasheet before inverter selection.\"}},\n {\"@type\":\"Question\",\"name\":\"Can PVT-E work with heat pumps?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. PVT-E can support a heat pump source loop, buffer tank or hot water preheating design. The system must be engineered around source temperature, flow rate, freeze protection, storage volume and control sequence. The PV side simultaneously offsets compressor electricity.\"}},\n {\"@type\":\"Question\",\"name\":\"What is the difference between PVT-E and PVT-T?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"PVT-E is the balanced or electricity-first option: PV output remains the main value and heat recovery adds extra energy value. PVT-T gives more emphasis to thermal output while still generating electricity, so it is better when the thermal load drives project ROI.\"}}\n ]\n}\n<\/script><\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SOLETKS PVT-E solar panel guide covering PV output, heat recovery, sizing, PVT-E vs PVT-T, project fit, RFQ data and buyer checks.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1728","post","type-post","status-publish","format-standard","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/posts\/1728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/comments?post=1728"}],"version-history":[{"count":1,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/posts\/1728\/revisions"}],"predecessor-version":[{"id":1731,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/posts\/1728\/revisions\/1731"}],"wp:attachment":[{"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/media?parent=1728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/categories?post=1728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/tags?post=1728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":1728,"date":"2026-07-01T02:57:25","date_gmt":"2026-07-01T02:57:25","guid":{"rendered":"https:\/\/service.soletksolar.com\/pvt-e-solar-panel-guide\/"},"modified":"2026-07-01T03:05:18","modified_gmt":"2026-07-01T03:05:18","slug":"pvt-e-solar-panel-guide","status":"publish","type":"post","link":"https:\/\/service.soletksolar.com\/lt\/pvt-e-solar-panel-guide\/","title":{"rendered":"PVT-E Solar Panel Guide for Hybrid Heat"},"content":{"rendered":"

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\n PVT-E Solar Panel Guide for Hybrid Heat | SOLETKS<\/title><br \/>\n <meta name=\"description\" content=\"SOLETKS PVT-E solar panel guide covering PV output, heat recovery, sizing, PVT-E vs PVT-T, project fit, RFQ data and buyer checks.\">\n <link rel=\"canonical\" href=\"https:\/\/service.soletksolar.com\/pvt-e-solar-panel-guide\/\">\n <meta name=\"author\" content=\"SOLETKS Technical Content Team\"><br \/>\n <meta name=\"primary_query\" content=\"PVT-E solar panel\"><br \/>\n <meta name=\"date\" content=\"2026-07-01\">\n <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap\" rel=\"stylesheet\">\n<style>\n \/* 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.crumb .here {\n color: var(--gold);\n }<\/p>\n<p> \/* left content *\/\n .banner-left {\n padding-bottom: 3.5rem;\n }<\/p>\n<p> .tag-row {\n display: flex;\n flex-wrap: wrap;\n gap: .5rem;\n margin-bottom: 1.4rem;\n }<\/p>\n<p> .pill {\n display: inline-flex;\n align-items: center;\n gap: .4rem;\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .14em;\n padding: .3rem .75rem;\n border-radius: 999px;\n border: none;\n }<\/p>\n<p> .pill-gold {\n background: rgba(245, 166, 35, .18);\n color: var(--gold);\n border: 1px solid rgba(245, 166, 35, .3);\n }<\/p>\n<p> .pill-teal {\n background: rgba(14, 138, 122, .18);\n color: #2DD4BF;\n border: 1px solid rgba(14, 138, 122, .3);\n }<\/p>\n<p> .banner h1 {\n color: #FFFFFF;\n margin-bottom: 1.3rem;\n }<\/p>\n<p> .banner h1 span {\n color: var(--gold);\n }<\/p>\n<p> .banner-lede {\n font-size: 1.1rem;\n line-height: 1.7;\n color: rgba(255, 255, 255, .72);\n margin-bottom: 2rem;\n max-width: 600px;\n }<\/p>\n<p> .cta-row {\n display: flex;\n flex-wrap: wrap;\n gap: .75rem;\n }<\/p>\n<p> .btn {\n display: inline-flex;\n align-items: center;\n gap: .5rem;\n font-family: var(--font-head);\n font-size: .95rem;\n font-weight: 600;\n padding: .85rem 1.6rem;\n border-radius: 999px;\n cursor: pointer;\n border: none;\n text-decoration: none;\n transition: .2s ease;\n white-space: nowrap;\n border-bottom: none !important;\n }<\/p>\n<p> .btn-gold {\n background: var(--gold);\n color: var(--obsidian);\n }<\/p>\n<p> .btn-gold:hover {\n background: #FFB830;\n transform: translateY(-2px);\n box-shadow: 0 8px 24px rgba(245, 166, 35, .4);\n color: var(--obsidian);\n }<\/p>\n<p> .btn-outline {\n background: transparent;\n color: rgba(255, 255, 255, .85);\n border: 1.5px solid rgba(255, 255, 255, .25) !important;\n }<\/p>\n<p> .btn-outline:hover {\n background: rgba(255, 255, 255, .08);\n color: #fff;\n border-color: rgba(255, 255, 255, .5) !important;\n }<\/p>\n<p> \/* Right panel \u2014 stat card stack *\/\n .banner-right {\n padding-bottom: 0;\n display: flex;\n flex-direction: column;\n gap: .6rem;\n }<\/p>\n<p> .stat-card {\n background: rgba(255, 255, 255, .06);\n border: 1px solid rgba(255, 255, 255, .1);\n border-radius: var(--r-md);\n padding: 1.2rem 1.4rem;\n backdrop-filter: blur(8px);\n display: flex;\n align-items: center;\n gap: 1.1rem;\n }<\/p>\n<p> .stat-icon {\n width: 44px;\n height: 44px;\n border-radius: 10px;\n background: rgba(245, 166, 35, .15);\n border: 1px solid rgba(245, 166, 35, .25);\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: 1.3rem;\n flex-shrink: 0;\n }<\/p>\n<p> .stat-content {}<\/p>\n<p> .stat-val {\n font-family: var(--font-mono);\n font-size: 1.55rem;\n font-weight: 700;\n color: var(--gold);\n line-height: 1;\n letter-spacing: -0.02em;\n }<\/p>\n<p> .stat-lab {\n font-size: .78rem;\n color: rgba(255, 255, 255, .55);\n font-family: var(--font-mono);\n text-transform: uppercase;\n letter-spacing: .08em;\n margin-top: .25rem;\n }<\/p>\n<p> \/* bottom image strip *\/\n .banner-img-strip {\n position: relative;\n z-index: 2;\n max-width: var(--max-w);\n margin: 2.5rem auto 0;\n padding: 0 1.5rem;\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 1rem;\n padding-bottom: 0;\n }<\/p>\n<p> .strip-img {\n border-radius: var(--r-lg) var(--r-lg) 0 0;\n overflow: hidden;\n height: 280px;\n }<\/p>\n<p> .strip-img img {\n width: 100%;\n height: 100%;\n object-fit: cover;\n object-position: center;\n transition: transform .5s ease;\n }<\/p>\n<p> .strip-img:hover img {\n transform: scale(1.03);\n }<\/p>\n<p> \/* \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n NAV BAR (jump links)\n \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 *\/\n .jumpnav {\n background: var(--frost-2);\n border-bottom: 1px solid rgba(10, 14, 20, .08);\n position: sticky;\n top: 0;\n z-index: 100;\n }<\/p>\n<p> .jumpnav-inner {\n max-width: var(--max-w);\n margin: 0 auto;\n padding: 0 1.5rem;\n display: flex;\n gap: 0;\n overflow-x: auto;\n scrollbar-width: none;\n }<\/p>\n<p> .jumpnav-inner::-webkit-scrollbar {\n display: none;\n }<\/p>\n<p> .jumpnav a {\n display: inline-block;\n padding: .9rem 1.1rem;\n font-size: .82rem;\n font-weight: 600;\n color: var(--steel);\n border-bottom: 2.5px solid transparent;\n white-space: nowrap;\n text-decoration: none;\n transition: .2s;\n }<\/p>\n<p> .jumpnav a:hover {\n color: var(--gold-2);\n border-bottom-color: var(--gold);\n }<\/p>\n<p> \/* \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n MAIN CONTENT\n \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 *\/\n .main {\n max-width: var(--max-w);\n margin: 0 auto;\n padding: 0 1.5rem 6rem;\n }<\/p>\n<p> \/* section spacing *\/\n .section {\n padding: 4rem 0 0;\n }<\/p>\n<p> .section:first-child {\n padding-top: 4rem;\n }<\/p>\n<p> \/* section label *\/\n .sec-label {\n display: inline-flex;\n align-items: center;\n gap: .5rem;\n font-family: var(--font-mono);\n font-size: .7rem;\n text-transform: uppercase;\n letter-spacing: .2em;\n color: var(--gold-2);\n margin-bottom: .7rem;\n }<\/p>\n<p> .sec-label::before {\n content: \"\";\n width: 24px;\n height: 2px;\n background: var(--gold);\n border-radius: 1px;\n }<\/p>\n<p> h2.section-h {\n margin-bottom: 1.4rem;\n }<\/p>\n<p> h2.section-h::after {\n content: \"\";\n display: block;\n width: 40px;\n height: 3px;\n background: var(--gold);\n border-radius: 2px;\n margin-top: .55rem;\n }<\/p>\n<p> \/* \u2500\u2500 Quick answer callout \u2500\u2500 *\/\n .callout-primary {\n background: linear-gradient(135deg, #FFFCF3, var(--gold-pale));\n border: 1px solid var(--gold-pale-2);\n border-left: 4px solid var(--gold);\n border-radius: var(--r-md);\n padding: 1.6rem 1.8rem;\n margin: 2.5rem 0;\n }<\/p>\n<p> .callout-primary .callout-tag {\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .15em;\n color: var(--gold-2);\n margin-bottom: .5rem;\n display: block;\n }<\/p>\n<p> .callout-primary p {\n color: var(--obsidian-2);\n font-size: 1.02rem;\n }<\/p>\n<p> .callout-primary strong {\n color: var(--gold-2);\n }<\/p>\n<p> \/* fit \/ not-fit grid *\/\n .fit-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 1rem;\n margin: 1.8rem 0 2.5rem;\n }<\/p>\n<p> .fit-card {\n background: #fff;\n border: 1px solid var(--frost);\n border-radius: var(--r-md);\n padding: 1.4rem 1.5rem;\n box-shadow: var(--shadow-1);\n }<\/p>\n<p> .fit-card.good {\n border-top: 3px solid var(--teal);\n }<\/p>\n<p> .fit-card.bad {\n border-top: 3px solid var(--ember);\n }<\/p>\n<p> .fit-card .fit-head {\n font-family: var(--font-mono);\n font-size: .72rem;\n text-transform: uppercase;\n letter-spacing: .12em;\n margin-bottom: .6rem;\n }<\/p>\n<p> .fit-card.good .fit-head {\n color: var(--teal);\n }<\/p>\n<p> .fit-card.bad .fit-head {\n color: var(--ember);\n }<\/p>\n<p> .fit-card p {\n font-size: .95rem;\n color: var(--slate);\n line-height: 1.65;\n }<\/p>\n<p> \/* \u2500\u2500 Tables \u2500\u2500 *\/\n .table-wrap {\n border-radius: var(--r-md);\n overflow: hidden;\n border: 1px solid #E4E9F0;\n background: #fff;\n box-shadow: var(--shadow-1);\n margin: 1.4rem 0 2rem;\n }<\/p>\n<p> table {\n width: 100%;\n border-collapse: collapse;\n font-size: .94rem;\n }<\/p>\n<p> thead th {\n background: var(--obsidian-2);\n color: rgba(255, 255, 255, .9);\n font-family: var(--font-mono);\n font-size: .74rem;\n text-transform: uppercase;\n letter-spacing: .1em;\n padding: .95rem 1.1rem;\n text-align: left;\n font-weight: 400;\n }<\/p>\n<p> thead th.r {\n text-align: right;\n }<\/p>\n<p> tbody td {\n padding: .85rem 1.1rem;\n border-bottom: 1px solid #EEF1F5;\n vertical-align: top;\n color: var(--obsidian-2);\n }<\/p>\n<p> tbody tr:last-child td {\n border-bottom: none;\n }<\/p>\n<p> tbody tr:nth-child(even) td {\n background: var(--frost-2);\n }<\/p>\n<p> tbody tr:hover td {\n background: var(--gold-pale);\n }<\/p>\n<p> td.val {\n font-family: var(--font-mono);\n font-size: .88rem;\n color: var(--teal);\n font-weight: 700;\n text-align: right;\n white-space: nowrap;\n }<\/p>\n<p> td.note {\n color: var(--steel);\n font-size: .9rem;\n }<\/p>\n<p> \/* \u2500\u2500 Split layout (text + image) \u2500\u2500 *\/\n .split {\n display: grid;\n grid-template-columns: 1.05fr 1fr;\n gap: 3rem;\n align-items: center;\n margin: 2.5rem 0;\n }<\/p>\n<p> .split.rev {\n grid-template-columns: 1fr 1.05fr;\n }<\/p>\n<p> .split.rev .split-img {\n order: -1;\n }<\/p>\n<p> .split-img {\n border-radius: var(--r-xl);\n overflow: hidden;\n box-shadow: var(--shadow-3);\n background: var(--frost);\n }<\/p>\n<p> .split-img img {\n width: 100%;\n height: 100%;\n object-fit: cover;\n aspect-ratio: 4\/3;\n }<\/p>\n<p> .split-img figcaption {\n padding: .7rem 1rem;\n font-size: .8rem;\n color: var(--steel);\n font-family: var(--font-mono);\n background: var(--frost-2);\n border-top: 1px solid #E4E9F0;\n }<\/p>\n<p> \/* \u2500\u2500 Feature grid (advantages) \u2500\u2500 *\/\n .feat-grid {\n display: grid;\n grid-template-columns: repeat(4, 1fr);\n gap: 1rem;\n margin: 2rem 0;\n }<\/p>\n<p> .feat-card {\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: var(--r-lg);\n padding: 1.7rem 1.4rem;\n box-shadow: var(--shadow-1);\n transition: .25s ease;\n position: relative;\n overflow: hidden;\n }<\/p>\n<p> .feat-card::before {\n content: \"\";\n position: absolute;\n top: 0;\n left: 0;\n right: 0;\n height: 3px;\n background: var(--gold);\n }<\/p>\n<p> .feat-card:hover {\n transform: translateY(-4px);\n box-shadow: var(--shadow-3);\n border-color: var(--gold);\n }<\/p>\n<p> .feat-num {\n font-family: var(--font-mono);\n font-size: 2.2rem;\n font-weight: 700;\n color: rgba(245, 166, 35, .15);\n line-height: 1;\n margin-bottom: .5rem;\n letter-spacing: -0.04em;\n }<\/p>\n<p> .feat-card h3 {\n font-size: 1rem;\n margin-bottom: .5rem;\n }<\/p>\n<p> .feat-card p {\n font-size: .88rem;\n color: var(--slate);\n line-height: 1.6;\n margin: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Spec table (highlighted) \u2500\u2500 *\/\n .spec-group {\n margin: 2rem 0 0;\n }<\/p>\n<p> .spec-group h3 {\n font-size: .8rem;\n font-family: var(--font-mono);\n text-transform: uppercase;\n letter-spacing: .14em;\n color: var(--steel);\n padding: .6rem 1.1rem;\n background: var(--frost);\n border: 1px solid #E4E9F0;\n border-bottom: none;\n border-radius: var(--r-sm) var(--r-sm) 0 0;\n margin: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Application cards \u2500\u2500 *\/\n .app-list {\n display: flex;\n flex-direction: column;\n gap: 1rem;\n margin: 1.8rem 0;\n }<\/p>\n<p> .app-item {\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: var(--r-lg);\n overflow: hidden;\n box-shadow: var(--shadow-1);\n display: grid;\n grid-template-columns: 260px 1fr;\n }<\/p>\n<p> .app-item-img {\n background: var(--frost);\n overflow: hidden;\n }<\/p>\n<p> .app-item-img img {\n width: 100%;\n height: 100%;\n object-fit: cover;\n }<\/p>\n<p> .app-item-body {\n padding: 1.6rem 1.8rem;\n }<\/p>\n<p> .app-num {\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .18em;\n color: var(--gold-2);\n margin-bottom: .4rem;\n display: block;\n }<\/p>\n<p> .app-item h3 {\n font-size: 1.2rem;\n margin-bottom: .6rem;\n }<\/p>\n<p> .app-item p {\n font-size: .95rem;\n color: var(--slate);\n margin-bottom: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Comparison \u2500\u2500 *\/\n .compare-wrap {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 1rem;\n margin: 2rem 0;\n }<\/p>\n<p> .compare-card {\n background: #fff;\n border: 1.5px solid #E4E9F0;\n border-radius: var(--r-lg);\n padding: 1.8rem 1.5rem;\n position: relative;\n transition: .2s;\n }<\/p>\n<p> .compare-card h3 {\n font-size: 1.35rem;\n margin-bottom: .3rem;\n }<\/p>\n<p> .compare-card .c-sub {\n font-family: var(--font-mono);\n font-size: .72rem;\n text-transform: uppercase;\n letter-spacing: .12em;\n color: var(--steel);\n margin-bottom: 1rem;\n display: block;\n }<\/p>\n<p> .compare-card .c-row {\n display: flex;\n gap: .5rem;\n margin: .5rem 0;\n font-size: .9rem;\n align-items: flex-start;\n }<\/p>\n<p> .compare-card .c-row::before {\n content: \"\u25b8\";\n color: var(--gold);\n flex-shrink: 0;\n margin-top: 1px;\n }<\/p>\n<p> .compare-card.active {\n border-color: var(--gold);\n background: linear-gradient(160deg, var(--gold-pale), #fff 60%);\n box-shadow: var(--shadow-2);\n }<\/p>\n<p> .compare-badge {\n position: absolute;\n top: -10px;\n right: 1.2rem;\n background: var(--gold);\n color: var(--obsidian);\n font-family: var(--font-mono);\n font-size: .68rem;\n font-weight: 700;\n letter-spacing: .1em;\n text-transform: uppercase;\n padding: .22rem .65rem;\n border-radius: 4px;\n }<\/p>\n<p> .compare-card .c-link {\n margin-top: 1.1rem;\n display: block;\n font-size: .88rem;\n }<\/p>\n<p> \/* \u2500\u2500 Config blocks (system configs) \u2500\u2500 *\/\n .config-grid {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 1rem;\n margin: 1.8rem 0;\n }<\/p>\n<p> .config-card {\n background: var(--frost-2);\n border: 1px solid #E4E9F0;\n border-radius: var(--r-md);\n padding: 1.4rem 1.3rem;\n transition: .2s;\n }<\/p>\n<p> .config-card:hover {\n background: #fff;\n box-shadow: var(--shadow-2);\n border-color: var(--gold);\n }<\/p>\n<p> .config-icon {\n font-size: 1.8rem;\n margin-bottom: .6rem;\n }<\/p>\n<p> .config-card h4 {\n font-size: 1rem;\n margin-bottom: .4rem;\n }<\/p>\n<p> .config-card p {\n font-size: .88rem;\n color: var(--slate);\n line-height: 1.6;\n margin: 0;\n }<\/p>\n<p> .config-fit {\n display: inline-block;\n margin-top: .6rem;\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .1em;\n color: var(--teal);\n background: var(--teal-pale);\n padding: .2rem .6rem;\n border-radius: 4px;\n }<\/p>\n<p> \/* \u2500\u2500 Project proof \u2500\u2500 *\/\n .proof-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 1.2rem;\n margin: 1.8rem 0;\n }<\/p>\n<p> .proof-card {\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: var(--r-lg);\n overflow: hidden;\n box-shadow: var(--shadow-1);\n }<\/p>\n<p> .proof-card-img {\n aspect-ratio: 16\/9;\n background: var(--obsidian-3);\n background-size: cover;\n background-position: center;\n }<\/p>\n<p> .proof-card-body {\n padding: 1.2rem 1.4rem;\n }<\/p>\n<p> .proof-meta {\n font-family: var(--font-mono);\n font-size: .7rem;\n text-transform: uppercase;\n letter-spacing: .1em;\n color: var(--gold-2);\n margin-bottom: .4rem;\n display: block;\n }<\/p>\n<p> .proof-card h4 {\n font-size: 1rem;\n margin-bottom: .4rem;\n }<\/p>\n<p> .proof-card p {\n font-size: .88rem;\n color: var(--slate);\n margin: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Checklist \u2500\u2500 *\/\n .checklist {\n margin: 1.2rem 0;\n }<\/p>\n<p> .checklist-item {\n display: flex;\n gap: .75rem;\n align-items: flex-start;\n padding: .6rem 0;\n border-bottom: 1px solid var(--frost);\n font-size: .95rem;\n }<\/p>\n<p> .checklist-item:last-child {\n border-bottom: none;\n }<\/p>\n<p> .check-dot {\n width: 20px;\n height: 20px;\n background: var(--gold-pale);\n border: 1.5px solid var(--gold);\n border-radius: 50%;\n flex-shrink: 0;\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: .6rem;\n color: var(--gold-2);\n margin-top: 2px;\n }<\/p>\n<p> \/* \u2500\u2500 FAQ accordion \u2500\u2500 *\/\n .faq {\n margin: 1.8rem 0;\n }<\/p>\n<p> .faq details {\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: var(--r-md);\n margin: .55rem 0;\n transition: .2s;\n }<\/p>\n<p> .faq details[open] {\n border-color: var(--gold);\n box-shadow: var(--shadow-1);\n }<\/p>\n<p> .faq summary {\n padding: 1.1rem 1.3rem;\n font-family: var(--font-head);\n font-weight: 600;\n font-size: .98rem;\n cursor: pointer;\n list-style: none;\n display: flex;\n justify-content: space-between;\n align-items: center;\n color: var(--obsidian);\n }<\/p>\n<p> .faq summary::-webkit-details-marker {\n display: none;\n }<\/p>\n<p> .faq summary::after {\n content: \"+\";\n font-size: 1.3rem;\n font-weight: 300;\n color: var(--gold-2);\n transition: .2s;\n flex-shrink: 0;\n }<\/p>\n<p> .faq details[open] summary::after {\n content: \"\u2212\";\n }<\/p>\n<p> .faq .faq-body {\n padding: 0 1.3rem 1.2rem;\n font-size: .95rem;\n color: var(--slate);\n line-height: 1.75;\n }<\/p>\n<p> .faq .faq-body p:last-child {\n margin-bottom: 0;\n }<\/p>\n<p> \/* \u2500\u2500 Formula \/ highlight note \u2500\u2500 *\/\n .formula-box {\n background: var(--obsidian-2);\n color: #E8F4E4;\n border-radius: var(--r-md);\n padding: 1.6rem 1.8rem;\n margin: 1.8rem 0;\n font-family: var(--font-mono);\n font-size: .95rem;\n line-height: 1.8;\n }<\/p>\n<p> .formula-box .f-eq {\n font-size: 1.05rem;\n color: var(--gold);\n margin: .4rem 0;\n display: block;\n }<\/p>\n<p> .formula-box .f-note {\n color: rgba(255, 255, 255, .5);\n font-size: .82rem;\n }<\/p>\n<p> \/* \u2500\u2500 Confirm note (gray blockquote) \u2500\u2500 *\/\n .note-box {\n background: var(--frost-2);\n border-left: 3px solid var(--steel-2);\n border-radius: 0 var(--r-sm) var(--r-sm) 0;\n padding: 1.2rem 1.5rem;\n margin: 1.4rem 0;\n font-size: .9rem;\n color: var(--steel);\n }<\/p>\n<p> .note-box strong {\n color: var(--obsidian-2);\n }<\/p>\n<p> \/* \u2500\u2500 CTA band \u2500\u2500 *\/\n .cta-band {\n background: linear-gradient(135deg, var(--obsidian-2) 0%, var(--obsidian-3) 100%);\n border-radius: var(--r-xl);\n padding: 2.8rem 2.6rem;\n margin: 3.5rem 0 1.5rem;\n position: relative;\n overflow: hidden;\n color: #fff;\n }<\/p>\n<p> .cta-band::before {\n content: \"\";\n position: absolute;\n top: -40%;\n right: -10%;\n width: 60%;\n height: 200%;\n background: radial-gradient(ellipse, rgba(245, 166, 35, .15), transparent 70%);\n pointer-events: none;\n }<\/p>\n<p> .cta-band h2 {\n color: #fff;\n margin-bottom: .8rem;\n }<\/p>\n<p> .cta-band h2::after {\n background: var(--gold);\n }<\/p>\n<p> .cta-band p {\n color: rgba(255, 255, 255, .75);\n max-width: 660px;\n margin-bottom: 1.6rem;\n font-size: 1.05rem;\n }<\/p>\n<p> .cta-band .btn-row {\n display: flex;\n flex-wrap: wrap;\n gap: .75rem;\n }<\/p>\n<p> \/* \u2500\u2500 Data note box \u2500\u2500 *\/\n .data-note {\n background: var(--teal-pale);\n border: 1px solid rgba(14, 138, 122, .2);\n border-left: 4px solid var(--teal);\n border-radius: var(--r-md);\n padding: 1.3rem 1.6rem;\n margin: 1.5rem 0;\n font-size: .93rem;\n color: var(--obsidian-2);\n }<\/p>\n<p> .data-note .dn-tag {\n font-family: var(--font-mono);\n font-size: .68rem;\n text-transform: uppercase;\n letter-spacing: .14em;\n color: var(--teal);\n margin-bottom: .3rem;\n display: block;\n }<\/p>\n<p> \/* \u2500\u2500 STK reference panel \u2500\u2500 *\/\n .stk-panel {\n background: var(--obsidian-3);\n border-radius: var(--r-lg);\n padding: 2rem 2rem;\n margin: 1.8rem 0;\n color: rgba(255, 255, 255, .8);\n }<\/p>\n<p> .stk-panel h3 {\n color: #fff;\n margin-bottom: .8rem;\n }<\/p>\n<p> .stk-panel p {\n font-size: .92rem;\n margin-bottom: 1rem;\n }<\/p>\n<p> .stk-panel .table-wrap {\n background: rgba(255, 255, 255, .04);\n border-color: rgba(255, 255, 255, .1);\n }<\/p>\n<p> .stk-panel table thead th {\n background: rgba(255, 255, 255, .08);\n color: rgba(255, 255, 255, .75);\n }<\/p>\n<p> .stk-panel table tbody td {\n color: rgba(255, 255, 255, .8);\n border-color: rgba(255, 255, 255, .08);\n }<\/p>\n<p> .stk-panel table tbody tr:nth-child(even) td {\n background: rgba(255, 255, 255, .04);\n }<\/p>\n<p> .stk-panel table tbody tr:hover td {\n background: rgba(245, 166, 35, .08);\n }<\/p>\n<p> .stk-panel table td.val {\n color: var(--gold);\n }<\/p>\n<p> \/* \u2500\u2500 Internal links \u2500\u2500 *\/\n .int-links {\n background: var(--frost-2);\n border: 1px dashed #D0D8E4;\n border-radius: var(--r-md);\n padding: 1.4rem 1.6rem;\n margin: 2rem 0;\n }<\/p>\n<p> .int-links strong {\n font-size: .82rem;\n font-family: var(--font-mono);\n text-transform: uppercase;\n letter-spacing: .1em;\n color: var(--steel);\n display: block;\n margin-bottom: .6rem;\n }<\/p>\n<p> .int-links ul {\n list-style: none;\n display: flex;\n flex-wrap: wrap;\n gap: .4rem;\n }<\/p>\n<p> .int-links li a {\n display: inline-block;\n padding: .4rem .9rem;\n background: #fff;\n border: 1px solid #E4E9F0;\n border-radius: 999px;\n font-size: .85rem;\n color: var(--obsidian);\n border-bottom: none;\n transition: .2s;\n }<\/p>\n<p> .int-links li a:hover {\n background: var(--obsidian);\n color: var(--gold);\n }<\/p>\n<p> \/* \u2500\u2500 Summary block \u2500\u2500 *\/\n .ai-summary {\n background: linear-gradient(135deg, var(--frost-2), var(--white));\n border: 1px solid #DDE3EC;\n border-radius: var(--r-xl);\n padding: 2.2rem 2.4rem;\n margin: 3rem 0 0;\n }<\/p>\n<p> .ai-summary .sec-label {\n margin-bottom: 1rem;\n }<\/p>\n<p> .ai-summary h2 {\n font-size: 1.7rem;\n margin-bottom: 1rem;\n }<\/p>\n<p> .ai-summary h2::after {\n display: none;\n }<\/p>\n<p> .ai-summary p {\n font-size: .98rem;\n color: var(--slate);\n line-height: 1.8;\n }<\/p>\n<p> \/* \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n RESPONSIVE\n \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 *\/\n @media (max-width: 980px) {\n .banner-inner {\n grid-template-columns: 1fr;\n gap: 2rem;\n padding-bottom: 0;\n }<\/p>\n<p> .banner-right {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: .6rem;\n }<\/p>\n<p> .banner-img-strip {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .strip-img:last-child {\n display: none;\n }<\/p>\n<p> .split {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .split.rev .split-img {\n order: 0;\n }<\/p>\n<p> .feat-grid {\n grid-template-columns: 1fr 1fr;\n }<\/p>\n<p> .compare-wrap {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .config-grid {\n grid-template-columns: 1fr 1fr;\n }<\/p>\n<p> .proof-grid {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .app-item {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .app-item-img {\n height: 200px;\n }<\/p>\n<p> .fit-grid {\n grid-template-columns: 1fr;\n }\n }<\/p>\n<p> @media (max-width: 640px) {\n h1 {\n font-size: 2rem;\n }<\/p>\n<p> .banner-inner {\n padding-top: 2.5rem;\n }<\/p>\n<p> .banner-right {\n grid-template-columns: 1fr 1fr;\n }<\/p>\n<p> .feat-grid {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .config-grid {\n grid-template-columns: 1fr;\n }<\/p>\n<p> .cta-band {\n padding: 1.8rem 1.4rem;\n }<\/p>\n<p> .ai-summary {\n padding: 1.5rem 1.4rem;\n }<\/p>\n<p> .main {\n padding: 0 1rem 4rem;\n }<\/p>\n<p> .wrap {\n padding: 0 1rem;\n }<\/p>\n<p> table {\n font-size: .84rem;\n }<\/p>\n<p> thead th,\n tbody td {\n padding: .7rem .8rem;\n }\n }\n <\/style>\n<p><\/head><body><\/p>\n<p> <\/p>\n<section class=\"banner\" aria-label=\"PVT-E product banner\">\n<div class=\"banner-inner\">\n<p> <\/p>\n<nav class=\"crumb\" aria-label=\"Breadcrumb\">\n <a href=\"\/\">Home<\/a><span class=\"sep\"> \u203a <\/span><br \/>\n <a href=\"\/products\/\">Products<\/a><span class=\"sep\"> \u203a <\/span><br \/>\n <a href=\"\/products\/pvt-solar-panel\/\">PVT Solar Panel<\/a><span class=\"sep\"> \u203a <\/span><br \/>\n <span class=\"here\">PVT-E Type Solar Panel<\/span><br \/>\n <\/nav>\n<p> <\/p>\n<div class=\"banner-left\">\n<div class=\"tag-row\">\n <span class=\"pill pill-gold\">\u2600 Electricity-First PVT<\/span><br \/>\n <span class=\"pill pill-teal\">\u26a1 + Heat Recovery<\/span>\n <\/div>\n<h1>PVT-E Type <span>Solar Panel<\/span> \u2014 Dual Energy. One Roof Surface.<\/h1>\n<p class=\"banner-lede\">\n Generates DC electricity from PV cells while recovering usable low-temperature heat from the same<br \/>\n module \u2014 built for limited-roof projects that need both power and practical heat output.\n <\/p>\n<p class=\"article-meta\" style=\"color:rgba(255,255,255,.72);font-size:.9rem;margin:0 0 1.25rem\">\n By SOLETKS Technical Content Team \u00b7 Updated July 1, 2026 \u00b7 Technical review:<br \/>\n PVT and solar thermal engineering team.\n <\/p>\n<div class=\"cta-row\">\n <a href=\"#request-spec-pack\" class=\"btn btn-gold\">Request SPEC PACK & Quote \u2192<\/a><br \/>\n <a href=\"#technical-data\" class=\"btn btn-outline\">View Specifications<\/a>\n <\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"banner-right\">\n<div class=\"stat-card\">\n<div class=\"stat-icon\">\u26a1<\/div>\n<div class=\"stat-content\">\n<div class=\"stat-val\">580 W<\/div>\n<div class=\"stat-lab\">PV Power @ STC<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n<div class=\"stat-icon\">\ud83c\udf21<\/div>\n<div class=\"stat-content\">\n<div class=\"stat-val\">\u2264 80%<\/div>\n<div class=\"stat-lab\">Combined Efficiency<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n<div class=\"stat-icon\">\ud83d\udcd0<\/div>\n<div class=\"stat-content\">\n<div class=\"stat-val\">22.44%<\/div>\n<div class=\"stat-lab\">Cell Efficiency<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"stat-card\">\n<div class=\"stat-icon\">\ud83d\udd0b<\/div>\n<div class=\"stat-content\">\n<div class=\"stat-val\">1180 W<\/div>\n<div class=\"stat-lab\">Peak Thermal Power<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"banner-img-strip\">\n<div class=\"strip-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/ueditor\/504\/upload\/image\/20260107\/1767756610784631.jpg.webp\" alt=\"SOLETKS PVT-E solar panel dual electricity and heat output\" loading=\"eager\">\n <\/div>\n<div class=\"strip-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/ueditor\/504\/upload\/image\/20260107\/1767756675451255.jpg.webp\" alt=\"PVT-E photovoltaic thermal panel technical structure\" loading=\"eager\">\n <\/div>\n<\/p><\/div>\n<\/section>\n<p> <\/p>\n<nav class=\"jumpnav\" aria-label=\"Page section navigation\">\n<div class=\"jumpnav-inner\">\n <a href=\"#what-is-pvte\">What Is PVT-E<\/a><br \/>\n <a href=\"#technical-data\">Technical Data<\/a><br \/>\n <a href=\"#advantages\">Advantages<\/a><br \/>\n <a href=\"#how-it-works\">How It Works<\/a><br \/>\n <a href=\"#applications\">Applications<\/a><br \/>\n <a href=\"#comparison\">Comparison<\/a><br \/>\n <a href=\"#projects\">Projects<\/a><br \/>\n <a href=\"#sizing\">Sizing Guide<\/a><br \/>\n <a href=\"#faq\">FAQ<\/a><br \/>\n <a href=\"#request-spec-pack\">Get Quote<\/a>\n <\/div>\n<\/nav>\n<p> <br \/>\n <main class=\"main\"><\/p>\n<p> <\/p>\n<div class=\"callout-primary\" style=\"margin-top:3rem\">\n <span class=\"callout-tag\">Quick Answer<\/span><\/p>\n<p>A <strong>PVT-E type solar panel<\/strong> is an electricity-first photovoltaic-thermal (PVT) module that<br \/>\n generates DC power from PV cells while simultaneously recovering usable low-temperature heat from the<br \/>\n back of the module. It is designed for buildings that need both electricity and heat from the same roof<br \/>\n area \u2014 particularly domestic hot water preheating, heat pump support, pool heating and commercial hybrid<br \/>\n solar projects. Under suitable conditions, SOLETKS states that PVT-E can achieve <strong>total solar<br \/>\n utilization up to 80%<\/strong>.<\/p>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"fit-grid\">\n<div class=\"fit-card good\">\n<div class=\"fit-head\">\u2713 Best fit<\/div>\n<p>Residential rooftops, apartments, hotels, gyms, villas, public buildings, heat pump projects and<br \/>\n commercial roofs where electricity remains the main priority but recovered heat has real value.<\/p>\n<\/p><\/div>\n<div class=\"fit-card bad\">\n<div class=\"fit-head\">\u2717 Not best for<\/div>\n<p>Power-only projects, buildings with no heat load, or projects that cannot support a hydraulic loop,<br \/>\n storage tank, pump station, controls and backup heating.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"int-links\">\n <strong>Explore SOLETKS PVT range<\/strong><\/p>\n<ul>\n<li><a href=\"\/products\/pvt-solar-panel\/\">PVT Solar Panel category<\/a><\/li>\n<li><a href=\"\/products\/pvt-solar-panel\/pvt-t-type-solar-panel\/\">PVT-T Type<\/a><\/li>\n<li><a href=\"\/products\/pvt-solar-panel\/tp-v-pro-type-solar-panel\/\">TP\/V Pro Type<\/a><\/li>\n<li><a href=\"\/products\/pvt-hybrid-solar-systems\/\">PVT Hybrid Systems<\/a><\/li>\n<li><a href=\"\/featured-projects\/\">Featured Projects<\/a><\/li>\n<li><a href=\"\/company\/quality-assurance\/\">Quality Assurance<\/a><\/li>\n<li><a href=\"\/contact\/\">Contact SOLETKS<\/a><\/li>\n<\/ul><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"what-is-pvte\">\n <span class=\"sec-label\">Section 01<\/span><\/p>\n<h2 class=\"section-h\">Why PVT-E Exists<\/h2>\n<div class=\"split\">\n<div>\n<p>A standard PV array converts sunlight into electricity, but the heat on and behind the module is<br \/>\n normally lost to the air. A PVT module changes the energy logic: the front PV layer generates<br \/>\n electricity, while the rear thermal layer removes heat and transfers it to a water or<br \/>\n water-glycol circuit.<\/p>\n<p>For projects with limited roof space, this matters. Instead of choosing between PV panels and<br \/>\n solar thermal collectors, a PVT-E panel allows one roof surface to support <strong>two useful<br \/>\n energy streams<\/strong>: electricity for building loads, grid connection or battery systems;<br \/>\n and low-temperature heat for hot water preheating, pool heating, process preheating or heat pump<br \/>\n source\/buffer loops.<\/p>\n<p>SOLETKS positions PVT-E as a balanced PV-T option: electricity generation remains the primary<br \/>\n value, while auxiliary heat recovery improves the total useful energy harvested from the same<br \/>\n installation area.<\/p>\n<\/p><\/div>\n<figure class=\"split-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E-0001.jpg\" alt=\"PVT-E hybrid photovoltaic thermal module by SOLETKS\" loading=\"lazy\"><figcaption>PVT-E Hybrid Photovoltaic Thermal Module \u2014 SOLETKS<\/figcaption><\/figure>\n<\/p><\/div>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Decision Factor<\/th>\n<th>Standard PV Only<\/th>\n<th>PVT-E Type Solar Panel<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Main output<\/td>\n<td>Electricity<\/td>\n<td>Electricity + recovered heat<\/td>\n<\/tr>\n<tr>\n<td>Thermal circuit<\/td>\n<td>No<\/td>\n<td>Yes \u2014 water or water-glycol loop<\/td>\n<\/tr>\n<tr>\n<td>Storage tank \/ buffer<\/td>\n<td>Not required<\/td>\n<td>Usually required<\/td>\n<\/tr>\n<tr>\n<td>Heat pump integration<\/td>\n<td>Electrical only<\/td>\n<td>Can support source \/ buffer \/ preheat design<\/td>\n<\/tr>\n<tr>\n<td>Roof productivity<\/td>\n<td>Electrical yield only<\/td>\n<td>Higher total useful energy per m\u00b2 when heat is used<\/td>\n<\/tr>\n<tr>\n<td>Best use case<\/td>\n<td>Power-only roofs<\/td>\n<td>Limited-roof projects needing power and usable heat<\/td>\n<\/tr>\n<tr>\n<td>Main risk<\/td>\n<td>Lower system complexity<\/td>\n<td>Recovered heat has little value without a real heat load<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"technical-data\">\n <span class=\"sec-label\">Section 02<\/span><\/p>\n<h2 class=\"section-h\">Technical Specifications \u2014 Verified Model Data<\/h2>\n<div class=\"data-note\">\n <span class=\"dn-tag\">Verified Datasheet Data<\/span><br \/>\n The following specifications are sourced from the SOLETKS official PVT-E product pages. Values apply to<br \/>\n the PVT-E Thermoelectric Assembly model. Confirm the final shipped model against the current SOLETKS<br \/>\n PVT-E SPEC PACK before inverter selection, hydraulic design or final quotation.\n <\/div>\n<p> <\/p>\n<div class=\"spec-group\">\n<h3>Mechanical Dimensions<\/h3>\n<div class=\"table-wrap\" style=\"margin-top:0;border-radius: 0 0 var(--r-md) var(--r-md);\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th class=\"r\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Outline dimensions (mm)<\/td>\n<td class=\"val\">2279 \u00d7 1134 \u00d7 45<\/td>\n<\/tr>\n<tr>\n<td>Glass size (mm)<\/td>\n<td class=\"val\">2273 \u00d7 1128<\/td>\n<\/tr>\n<tr>\n<td>Weight (kg)<\/td>\n<td class=\"val\">39<\/td>\n<\/tr>\n<tr>\n<td>Back panel material<\/td>\n<td class=\"val\">Color coated panels<\/td>\n<\/tr>\n<tr>\n<td>Packing quantity<\/td>\n<td class=\"val\">28 units\/tray \u00b7 616 units\/40ft container<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"spec-group\">\n<h3>Electrical Performance (STC)<\/h3>\n<div class=\"table-wrap\" style=\"margin-top:0;border-radius: 0 0 var(--r-md) var(--r-md);\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th class=\"r\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Maximum power \u2014 P<sub>max<\/sub> (STC)<\/td>\n<td class=\"val\">580 W<\/td>\n<\/tr>\n<tr>\n<td>Cell type<\/td>\n<td class=\"val\">N-type TOPCon monocrystalline<\/td>\n<\/tr>\n<tr>\n<td>Cell count<\/td>\n<td class=\"val\">144 cells (6 \u00d7 24)<\/td>\n<\/tr>\n<tr>\n<td>Module efficiency<\/td>\n<td class=\"val\">22.44%<\/td>\n<\/tr>\n<tr>\n<td>Open-circuit voltage \u2014 V<sub>oc<\/sub><\/td>\n<td class=\"val\">51.1 V<\/td>\n<\/tr>\n<tr>\n<td>Max. power point voltage \u2014 V<sub>mp<\/sub><\/td>\n<td class=\"val\">44.45 V<\/td>\n<\/tr>\n<tr>\n<td>Short-circuit current \u2014 I<sub>sc<\/sub><\/td>\n<td class=\"val\">14.31 A<\/td>\n<\/tr>\n<tr>\n<td>Max. power point current \u2014 I<sub>mp<\/sub><\/td>\n<td class=\"val\">13.05 A<\/td>\n<\/tr>\n<tr>\n<td>Working temperature range<\/td>\n<td class=\"val\">\u221240\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Maximum system voltage<\/td>\n<td class=\"val\">1500 V (T\u00dcV)<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"spec-group\">\n<h3>Thermal Performance<\/h3>\n<div class=\"table-wrap\" style=\"margin-top:0;border-radius: 0 0 var(--r-md) var(--r-md);\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th class=\"r\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Peak light-thermal power (W)<\/td>\n<td class=\"val\">1180 W<\/td>\n<\/tr>\n<tr>\n<td>Combined solar utilization<\/td>\n<td class=\"val\">Up to 80%<\/td>\n<\/tr>\n<tr>\n<td>Dielectric capacity (L)<\/td>\n<td class=\"val\">1.2 L<\/td>\n<\/tr>\n<tr>\n<td>Heat-transfer medium<\/td>\n<td class=\"val\">Propylene glycol \/ glycol \/ water<\/td>\n<\/tr>\n<tr>\n<td>Working pressure (MPa)<\/td>\n<td class=\"val\">0.6 MPa<\/td>\n<\/tr>\n<tr>\n<td>Interface size & quantity<\/td>\n<td class=\"val\">G1\/2 external thread \u00d7 2<\/td>\n<\/tr>\n<tr>\n<td>Heat exchanger structure<\/td>\n<td class=\"val\">Tubular plate type<\/td>\n<\/tr>\n<tr>\n<td>Heat exchanger material<\/td>\n<td class=\"val\">Red copper<\/td>\n<\/tr>\n<tr>\n<td>Operating mode<\/td>\n<td class=\"val\">Interstitial expansion<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<div class=\"note-box\">\n <strong>Confirm on quotation:<\/strong> Temperature coefficient of<br \/>\n P<sub>max<\/sub>\/V<sub>oc<\/sub>\/I<sub>sc<\/sub>, recommended hydraulic flow rate per module, pressure drop<br \/>\n at design flow, wind\/snow load rating, mounting clamp zones, stagnation temperature, glycol<br \/>\n concentration for freeze protection, max. modules per hydraulic string, full warranty terms (PV \/<br \/>\n thermal \/ workmanship) and applicable certificate for the exact shipped configuration.\n <\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"advantages\">\n <span class=\"sec-label\">Section 03<\/span><\/p>\n<h2 class=\"section-h\">Four Core Advantages of PVT-E<\/h2>\n<div class=\"feat-grid\">\n<div class=\"feat-card\">\n<div class=\"feat-num\">01<\/div>\n<h3>Efficiency Advantage<\/h3>\n<p>Combined solar utilization reaches <strong>up to 80%<\/strong>. Active thermal extraction<br \/>\n maintains PV cell temperature in the optimal 25\u201345\u00b0C range \u2014 for every 1\u00b0C reduction, electrical<br \/>\n efficiency improves by ~0.3\u20130.5%.<\/p>\n<\/p><\/div>\n<div class=\"feat-card\">\n<div class=\"feat-num\">02<\/div>\n<h3>Space Advantage<\/h3>\n<p>Produces electricity and heat from the same surface area \u2014 reducing required installation area by<br \/>\n approximately <strong>50%<\/strong> versus separate PV + collector systems.<\/p>\n<\/p><\/div>\n<div class=\"feat-card\">\n<div class=\"feat-num\">03<\/div>\n<h3>Environmental Advantage<\/h3>\n<p>Zero direct carbon emissions during operation. Replaces fossil-fuel heating and grid electricity,<br \/>\n contributing to <strong>measurable CO\u2082 reduction<\/strong> across building and industrial<br \/>\n applications.<\/p>\n<\/p><\/div>\n<div class=\"feat-card\">\n<div class=\"feat-num\">04<\/div>\n<h3>Economic Advantage<\/h3>\n<p>Two energy streams from one investment: reduced electricity bills and reduced heating fuel costs.<br \/>\n Lower cell operating temperature extends module lifespan and <strong>increases lifetime<br \/>\n generation by 16%+<\/strong>.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"how-it-works\">\n <span class=\"sec-label\">Section 04<\/span><\/p>\n<h2 class=\"section-h\">How a PVT-E Panel Works<\/h2>\n<div class=\"split rev\">\n<div>\n<h3>1 \u2014 Electrical Side<\/h3>\n<p>N-type TOPCon cells on the front face generate DC electricity. String voltage, inverter matching,<br \/>\n DC protection, grounding, insulation, cable routing and grid requirements follow standard PV<br \/>\n engineering practice, with the added consideration that module temperature stays lower \u2014<br \/>\n supporting consistent output.<\/p>\n<h3 style=\"margin-top:1.4rem\">2 \u2014 Thermal Side<\/h3>\n<p>A red copper tubular-plate heat exchanger behind the PV layer removes heat from the module and<br \/>\n transfers it into a circulating fluid loop. With 0.6 MPa working pressure and G1\/2 interface<br \/>\n connections, the thermal circuit is ready for standard closed-loop hydraulic design. Heat can be<br \/>\n routed to: DHW preheat tanks; heat pump source or buffer loops; swimming pool heat exchangers;<br \/>\n low-temperature process or washing loads; and buffer tanks for later use.<\/p>\n<h3 style=\"margin-top:1.4rem\">3 \u2014 System Side<\/h3>\n<p>PVT-E should be designed as a system, not a commodity panel. A complete project includes PVT<br \/>\n panels, mounting hardware, inverter, pump station, controller, sensors, expansion vessel,<br \/>\n insulated piping, heat exchanger, storage tank, backup heating and monitoring.<\/p>\n<\/p><\/div>\n<figure class=\"split-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/ueditor\/504\/upload\/image\/20260107\/1767751298610891.jpg.webp\" alt=\"PVT-E hybrid module system diagram electricity and heat circuit\" loading=\"lazy\"><figcaption>PVT-E integrated system overview \u2014 thermal + electrical coupling design<\/figcaption><\/figure>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"table-wrap\" style=\"margin-top:2rem\">\n<table>\n<thead>\n<tr>\n<th>Key Technology<\/th>\n<th>What It Does<\/th>\n<th>Result<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>High-Efficiency Dual Optimization<\/strong><\/td>\n<td>PID-based fluid parameter control + transient thermal-electrical coupling model<\/td>\n<td class=\"note\">~22.4% electrical efficiency + >35% thermal efficiency<\/td>\n<\/tr>\n<tr>\n<td><strong>Spectral Selective Coating (PVD\/CVD)<\/strong><\/td>\n<td>Multilayer coatings utilize a wide solar wavelength range<\/td>\n<td class=\"note\">Improved optical energy conversion across spectrum<\/td>\n<\/tr>\n<tr>\n<td><strong>Vacuum Bonding + Heat Spreader<\/strong><\/td>\n<td>Optimized material matching reduces interfacial thermal resistance<\/td>\n<td class=\"note\">Better heat transfer; structural stability maintained<\/td>\n<\/tr>\n<tr>\n<td><strong>Low Thermal Loss (Aerogel Composite)<\/strong><\/td>\n<td>Staggered insulation + selective coatings + vacuum packaging<\/td>\n<td class=\"note\">Significantly reduced convective and radiative loss<\/td>\n<\/tr>\n<tr>\n<td><strong>Vacuum Lamination + Thermal Curing<\/strong><\/td>\n<td>Eliminates micro-cracks, bubbles and delamination<\/td>\n<td class=\"note\">Long-term reliability; lifetime generation +16%+<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"useful-heat\">\n <span class=\"sec-label\">Section 05<\/span><\/p>\n<h2 class=\"section-h\">The Most Important Design Rule: Useful Heat<\/h2>\n<div class=\"split\">\n<div>\n<p>The most common PVT-E mistake is counting recovered heat without confirming where it goes.<br \/>\n <strong>Useful heat<\/strong> depends on: local irradiation and ambient temperature; roof<br \/>\n orientation, tilt and shading; flow rate and operating temperature; storage tank volume and heat<br \/>\n exchanger sizing; load timing across the day and seasons; pipe insulation and hydraulic design;<br \/>\n and backup heater or heat pump control logic.<\/p>\n<p>PVT-E is strongest when recovered heat can be used at low or moderate temperatures. That makes it<br \/>\n especially suitable for hot water preheating, pool heating, heat pump support and<br \/>\n low-temperature process preheating. If a project needs high final water temperature, PVT-E<br \/>\n reduces the temperature lift before a boiler or heat pump \u2014 but should not be sold as the sole<br \/>\n heat source without energy simulation.<\/p>\n<\/p><\/div>\n<figure class=\"split-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/ueditor\/504\/upload\/image\/20260107\/1767756756905060.jpg.webp\" alt=\"PVT-E installed application factory quality manufacturing\" loading=\"lazy\"><figcaption>SOLETKS PVT-E manufacturing and quality validation facility<\/figcaption><\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"applications\">\n <span class=\"sec-label\">Section 06<\/span><\/p>\n<h2 class=\"section-h\">Recommended System Configurations<\/h2>\n<div class=\"app-list\">\n<div class=\"app-item\">\n<div class=\"app-item-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2025-10\/PVT-E0001.jpg\" alt=\"PVT-E domestic hot water preheating system\" loading=\"lazy\">\n <\/div>\n<div class=\"app-item-body\">\n <span class=\"app-num\">Config 01<\/span><\/p>\n<h3>PVT-E + Domestic Hot Water Preheating<\/h3>\n<p>The PVT-E loop heats a preheat tank before an electric heater, gas boiler or heat pump water<br \/>\n heater. This reduces the temperature lift required from backup heating and can significantly<br \/>\n reduce daily energy consumption.<\/p>\n<p style=\"margin-top:.6rem\"><strong>Best for:<\/strong> Villas, apartments, hotels, gyms,<br \/>\n schools, staff facilities and small commercial buildings.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"app-item\">\n<div class=\"app-item-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2025-10\/PVT-E001.jpg\" alt=\"PVT-E heat pump source buffer loop integration\" loading=\"lazy\">\n <\/div>\n<div class=\"app-item-body\">\n <span class=\"app-num\">Config 02<\/span><\/p>\n<h3>PVT-E + Heat Pump Source or Buffer Loop<\/h3>\n<p>The PVT-E loop supplies low-temperature heat to a buffer tank or heat pump source loop. The<br \/>\n design must match the heat pump’s flow rate, source temperature, control sequence and<br \/>\n freeze-protection requirements. The PV side simultaneously offsets compressor electricity.\n <\/p>\n<p style=\"margin-top:.6rem\"><strong>Best for:<\/strong> Hybrid heat pump systems, low-temperature<br \/>\n heating projects and retrofits with limited roof area.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"app-item\">\n<div class=\"app-item-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E03.jpg\" alt=\"PVT-E pool heating system villa resort\" loading=\"lazy\">\n <\/div>\n<div class=\"app-item-body\">\n <span class=\"app-num\">Config 03<\/span><\/p>\n<h3>PVT-E + Pool Heating<\/h3>\n<p>Pools are a good thermal match: the required temperature is relatively low and the load can<br \/>\n absorb daytime solar heat efficiently. PVT-E delivers electricity and pool heat from the<br \/>\n same roof area, maximizing value from limited space.<\/p>\n<p style=\"margin-top:.6rem\"><strong>Best for:<\/strong> Villas, resorts, hotels, gyms, sports<br \/>\n centers and residential communities.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"config-grid\">\n<div class=\"config-card\">\n<div class=\"config-icon\">\ud83c\udfed<\/div>\n<h4>Process Preheating<\/h4>\n<p>Recovered heat for washing, cleaning, canteen hot water or low-temperature boiler preheating in<br \/>\n factories, farms and food-service buildings.<\/p>\n<p> <span class=\"config-fit\">Industrial \/ Agri<\/span>\n <\/div>\n<div class=\"config-card\">\n<div class=\"config-icon\">\ud83d\udd0b<\/div>\n<h4>Buffer Tank + Backup<\/h4>\n<p>Buffer tank stores daytime heat. A boiler, electric heater or heat pump completes temperature<br \/>\n when solar is insufficient \u2014 handles morning\/evening peaks.<\/p>\n<p> <span class=\"config-fit\">Commercial \/ Multi-Load<\/span>\n <\/div>\n<div class=\"config-card\">\n<div class=\"config-icon\">\ud83c\udfd7<\/div>\n<h4>PVT-E + Battery + EV<\/h4>\n<p>PV side integrated with battery and EV charging via hybrid inverter, thermal side handling DHW or<br \/>\n pool \u2014 maximizing roof value per m\u00b2.<\/p>\n<p> <span class=\"config-fit\">Premium Residential<\/span>\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"when-better\">\n <span class=\"sec-label\">Section 07<\/span><\/p>\n<h2 class=\"section-h\">When Standard PV or Solar Thermal May Be Better<\/h2>\n<p>PVT-E is not always the best answer. Buyers trust a manufacturer more when the page explains the limits<br \/>\n clearly.<\/p>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Situation<\/th>\n<th>Better Choice<\/th>\n<th>Reason<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Project only needs electricity<\/td>\n<td>Standard PV<\/td>\n<td class=\"note\">Simpler, cheaper and easier to install.<\/td>\n<\/tr>\n<tr>\n<td>No daily heat load exists<\/td>\n<td>Standard PV<\/td>\n<td class=\"note\">Recovered heat will not create value.<\/td>\n<\/tr>\n<tr>\n<td>Hot water is the main ROI driver<\/td>\n<td>PVT-T \/ TP\/V Pro \/ Solar Thermal<\/td>\n<td class=\"note\">A thermal-priority product may deliver stronger ROI.<\/td>\n<\/tr>\n<tr>\n<td>Site cannot support pipes, tanks or pump station<\/td>\n<td>Standard PV<\/td>\n<td class=\"note\">PVT-E requires a hydraulic system to function.<\/td>\n<\/tr>\n<tr>\n<td>Buyer wants only a commodity panel price<\/td>\n<td>Standard PV or separate thermal<\/td>\n<td class=\"note\">PVT value depends on system design, not unit price alone.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"comparison\">\n <span class=\"sec-label\">Section 08<\/span><\/p>\n<h2 class=\"section-h\">PVT-E vs PVT-T vs TP\/V Pro \u2014 How to Choose<\/h2>\n<div class=\"compare-wrap\">\n<div class=\"compare-card active\">\n <span class=\"compare-badge\">This Page<\/span><\/p>\n<h3>PVT-E<\/h3>\n<p> <span class=\"c-sub\">Electricity-First Hybrid<\/span><\/p>\n<div class=\"c-row\">PV output is the main value \u2014 heat recovery adds project value.<\/div>\n<div class=\"c-row\">Residential rooftops, apartments, commercial roofs.<\/div>\n<div class=\"c-row\">Best when electrical output leads and heat is a secondary benefit.<\/div>\n<div class=\"c-row\">N-type TOPCon 580 W | 22.44% efficiency | Up to 80% combined.<\/div>\n<\/p><\/div>\n<div class=\"compare-card\">\n<h3>PVT-T<\/h3>\n<p> <span class=\"c-sub\">Thermal-Focused Hybrid<\/span><\/p>\n<div class=\"c-row\">Higher heat capture while maintaining power generation.<\/div>\n<div class=\"c-row\">Hotels, hospitals, schools, pools, large hot-water users.<\/div>\n<div class=\"c-row\">Best when thermal load drives ROI but PV still needed.<\/div>\n<p> <a class=\"c-link\" href=\"\/products\/pvt-solar-panel\/pvt-t-type-solar-panel\/\">Learn about PVT-T \u2192<\/a>\n <\/div>\n<div class=\"compare-card\">\n<h3>TP\/V Pro<\/h3>\n<p> <span class=\"c-sub\">Premium Engineering Hybrid<\/span><\/p>\n<div class=\"c-row\">Upgraded thermal management + advanced cooling design.<\/div>\n<div class=\"c-row\">Premium developers, ESG buildings, heat pump systems, Tianjin-scale projects.\n <\/div>\n<div class=\"c-row\">Best for highest total energy yield with full system integration.<\/div>\n<p> <a class=\"c-link\" href=\"\/products\/pvt-solar-panel\/tp-v-pro-type-solar-panel\/\">Learn about TP\/V Pro<br \/>\n \u2192<\/a>\n <\/div>\n<\/p><\/div>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Buyer Question<\/th>\n<th>PVT-E<\/th>\n<th>PVT-T<\/th>\n<th>TP\/V Pro<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Electricity the main value?<\/td>\n<td>\u2713 Yes<\/td>\n<td>Medium<\/td>\n<td>Medium\u2013High<\/td>\n<\/tr>\n<tr>\n<td>Heat the main value?<\/td>\n<td>Secondary<\/td>\n<td>\u2713 Yes<\/td>\n<td>\u2713 Yes + premium integration<\/td>\n<\/tr>\n<tr>\n<td>Basic residential \/ commercial roof?<\/td>\n<td>\u2713 Strong fit<\/td>\n<td>Possible<\/td>\n<td>Usually over-specified<\/td>\n<\/tr>\n<tr>\n<td>Hotel, hospital, pool \u2014 high daily heat demand?<\/td>\n<td>Possible<\/td>\n<td>\u2713 Stronger<\/td>\n<td>\u2713 Strongest for premium<\/td>\n<\/tr>\n<tr>\n<td>ESG \/ demonstration building?<\/td>\n<td>Possible<\/td>\n<td>Possible<\/td>\n<td>\u2713 Strongest positioning<\/td>\n<\/tr>\n<tr>\n<td>Heat pump integration central?<\/td>\n<td>Source\/preheat support<\/td>\n<td>Strong<\/td>\n<td>\u2713 Strongest for hybrid systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"technical-proof\">\n <span class=\"sec-label\">Section 09<\/span><\/p>\n<h2 class=\"section-h\">SOLETKS Thermal Engineering Proof<\/h2>\n<p>SOLETKS publishes report-based data for its certified STK-FPC flat-plate collector series via Solar<br \/>\n Keymark annex issued by DIN CERTCO (2024-12-31), referencing Intertek test report<br \/>\n <strong>240531098GZU-001<\/strong>. This is not a PVT-E rating \u2014 it is evidence of SOLETKS’ report-backed<br \/>\n thermal engineering capability. Serious PVT-E buyers should request the same level of documentation for<br \/>\n the PVT-E model: certificate path, test report reference, pressure rating, yield assumptions and<br \/>\n performance curves.<\/p>\n<div class=\"stk-panel\">\n<h3>STK-FPC Reference \u2014 Solar Keymark Annex Data<\/h3>\n<p>Collector series: STK-FPC | Certifying body: DIN CERTCO | Test reference: Intertek 240531098GZU-001\n <\/p>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th class=\"r\">Public Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u03b7\u2080,b (optical efficiency)<\/td>\n<td class=\"val\">0.774<\/td>\n<\/tr>\n<tr>\n<td>a1 \u2014 first-order heat-loss coefficient<\/td>\n<td class=\"val\">1.64 W\/(m\u00b2\u00b7K)<\/td>\n<\/tr>\n<tr>\n<td>a2 \u2014 second-order heat-loss coefficient<\/td>\n<td class=\"val\">0.077 W\/(m\u00b2\u00b7K\u00b2)<\/td>\n<\/tr>\n<tr>\n<td>Maximum operating pressure<\/td>\n<td class=\"val\">1000 kPa<\/td>\n<\/tr>\n<tr>\n<td>Standard gross sizes<\/td>\n<td class=\"val\">2.00 \/ 2.50 \/ 3.00 m\u00b2<\/td>\n<\/tr>\n<tr>\n<td>Dimensions in series (L \u00d7 W \u00d7 H mm)<\/td>\n<td class=\"val\">2000\u00d71000\u00d780 | 2000\u00d71250\u00d780 | 2000\u00d71500\u00d780<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"projects\">\n <span class=\"sec-label\">Section 10<\/span><\/p>\n<h2 class=\"section-h\">SOLETKS Project References<\/h2>\n<p>The following SOLETKS references prove hybrid and thermal project execution capability. They should be<br \/>\n presented as company\/project evidence, not as proof that every listed project used PVT-E panels<br \/>\n specifically. For procurement, ask SOLETKS for PVT-E-specific reference photos, installed panel count,<br \/>\n system diagram and annual output data.<\/p>\n<div class=\"proof-grid\">\n<div class=\"proof-card\">\n<div class=\"proof-card-img\" style=\"background:linear-gradient(135deg, #1a2b3c, #0d1a2a); display:flex; align-items:center; justify-content:center;\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVE-E9.jpg\" alt=\"Tianjin School TPV Pro heat pump project 3000 sqm\" loading=\"lazy\" style=\"width:100%;height:100%;object-fit:cover;\">\n <\/div>\n<div class=\"proof-card-body\">\n <span class=\"proof-meta\">2024 \u00b7 Tianjin \u00b7 3,000 m\u00b2<\/span><\/p>\n<h4>Tianjin School TPV Pro + Heat Pump Project<\/h4>\n<p>TPV Pro + heat pump system meets student heating needs while generating on-site electricity \u2014<br \/>\n demonstrates hybrid solar + heat pump integration at project scale.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"proof-card\">\n<div class=\"proof-card-img\" style=\"background:linear-gradient(135deg, #1a2b3c, #0d1a2a);\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2025-10\/PVT-E.jpg\" alt=\"APEC Summit Hotel hot water system Beijing\" loading=\"lazy\" style=\"width:100%;height:100%;object-fit:cover;\">\n <\/div>\n<div class=\"proof-card-body\">\n <span class=\"proof-meta\">2014 \u00b7 Beijing \u00b7 50 t\/day<\/span><\/p>\n<h4>APEC Summit Hotel Hot Water System<\/h4>\n<p>Saves 150,000 kWh annually; reduces CO\u2082 by 74 tons\/year. Relevant to hotel, hospitality and<br \/>\n commercial hot-water projects.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"proof-card\">\n<div class=\"proof-card-img\" style=\"overflow:hidden;\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E-0001.jpg\" alt=\"Florida Resort villa hot water solar project\" loading=\"lazy\" style=\"width:100%;height:100%;object-fit:cover;\">\n <\/div>\n<div class=\"proof-card-body\">\n <span class=\"proof-meta\">2022 \u00b7 Florida, USA \u00b7 200 L\/day per villa<\/span><\/p>\n<h4>Florida Resort Villa Hot Water Project<\/h4>\n<p>Flat-plate water heaters provide daily hot water for each resort villa \u2014 relevant to villas,<br \/>\n resorts and distributed domestic DHW demand.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"proof-card\">\n<div class=\"proof-card-img\" style=\"overflow:hidden;\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E03.jpg\" alt=\"Harz Church hot water Germany engineering collectors\" loading=\"lazy\" style=\"width:100%;height:100%;object-fit:cover;\">\n <\/div>\n<div class=\"proof-card-body\">\n <span class=\"proof-meta\">2021 \u00b7 Germany \u00b7 22 t\/day<\/span><\/p>\n<h4>Harz Church Hot Water Project<\/h4>\n<p>Engineering-grade collectors in series\/parallel configuration provide reliable hot-water<br \/>\n supply \u2014 relevant to European-style commercial DHW design.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"sizing\">\n <span class=\"sec-label\">Section 11<\/span><\/p>\n<h2 class=\"section-h\">Sizing Guide: From Heat Load to System Concept<\/h2>\n<p>Start with the daily heat demand before selecting a panel count:<\/p>\n<div class=\"formula-box\">\n <span class=\"f-eq\">Daily heat demand (kWh) = Volume (L) \u00d7 \u0394T (\u00b0C) \u00d7 0.001163<\/span><br \/>\n <span class=\"f-note\">Where \u0394T = target outlet temperature \u2212 cold-water inlet temperature<\/span><br \/>\n <br \/>\n <span class=\"f-note\">Example: 2,000 L\/day | Inlet 15\u00b0C \u2192 Target 40\u00b0C<\/span><br \/>\n <span class=\"f-eq\">2,000 \u00d7 (40 \u2212 15) \u00d7 0.001163 = 58.15 kWh\/day<\/span><br \/>\n <span class=\"f-note\">This is the DHW load only \u2014 not the solar output. Panel count requires irradiation,<br \/>\n efficiency curve, solar fraction, storage and backup strategy.<\/span>\n <\/div>\n<p>To estimate panel count, SOLETKS needs: project country and city; roof area, tilt, orientation, shading;<br \/>\n selected PVT-E model; thermal output curve; target solar fraction; storage tank volume; and heat pump or<br \/>\n boiler backup strategy. A reliable quotation should return a <strong>system concept<\/strong>, not only a<br \/>\n panel price.<\/p>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Input to Provide<\/th>\n<th>Example Reference<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Building type and application<\/td>\n<td class=\"note\">Hotel, school, hospital, villa, apartment, factory<\/td>\n<\/tr>\n<tr>\n<td>Project country and city<\/td>\n<td class=\"note\">For irradiation zone and freeze risk<\/td>\n<\/tr>\n<tr>\n<td>Available roof area, tilt, orientation, shading<\/td>\n<td class=\"note\">m\u00b2 + photo or drawing<\/td>\n<\/tr>\n<tr>\n<td>Target PV capacity or electricity offset<\/td>\n<td class=\"note\">kW or % of consumption<\/td>\n<\/tr>\n<tr>\n<td>Daily hot water volume and outlet temperature<\/td>\n<td class=\"note\">m\u00b3\/day @ target \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Cold-water inlet temperature<\/td>\n<td class=\"note\">Annual average or seasonal range<\/td>\n<\/tr>\n<tr>\n<td>Existing boiler, heat pump, tank, BEMS<\/td>\n<td class=\"note\">Capacity, fuel type, age<\/td>\n<\/tr>\n<tr>\n<td>Pool, space heating, process preheating<\/td>\n<td class=\"note\">Yes \/ No + volume and temperature<\/td>\n<\/tr>\n<tr>\n<td>Local minimum outdoor temperature<\/td>\n<td class=\"note\">For freeze protection design<\/td>\n<\/tr>\n<tr>\n<td>Required certifications and market standards<\/td>\n<td class=\"note\">Solar Keymark, CE, UL, local code<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"commissioning\">\n <span class=\"sec-label\">Section 12<\/span><\/p>\n<h2 class=\"section-h\">Installation & Commissioning Checklist<\/h2>\n<p>Commission PVT-E as both a PV system and a thermal system. Skipping thermal commissioning makes a good<br \/>\n PVT-E panel underperform.<\/p>\n<div style=\"display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-top:1.4rem\">\n<div>\n<h3 style=\"font-size:1rem;color:var(--teal);margin-bottom:.8rem\">Electrical Commissioning<\/h3>\n<div class=\"checklist\">\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Confirm string voltage and inverter compatibility<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Check DC cable routing, connector quality and<br \/>\n polarity<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Verify insulation, grounding and protection<br \/>\n devices<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Check shading, mismatch and monitoring data<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Confirm local electrical compliance and grid<br \/>\n requirements<\/span>\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div>\n<h3 style=\"font-size:1rem;color:var(--gold-2);margin-bottom:.8rem\">Thermal Commissioning<\/h3>\n<div class=\"checklist\">\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Pressure-test the hydraulic loop<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Confirm flow rate for each branch<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Purge air and verify pump station \/ controller<br \/>\n logic<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Check expansion vessel sizing and relief valve<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Confirm glycol concentration or drain-back<br \/>\n strategy<\/span>\n <\/div>\n<div class=\"checklist-item\">\n<div class=\"check-dot\">\u2713<\/div>\n<p><span>Test backup heater or heat pump control sequence<\/span>\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"faq\">\n <span class=\"sec-label\">Section 13<\/span><\/p>\n<h2 class=\"section-h\">Frequently Asked Questions<\/h2>\n<div class=\"faq\">\n<details open>\n<summary>What is a PVT-E type solar panel?<\/summary>\n<div class=\"faq-body\">\n<p>A PVT-E type solar panel is a photovoltaic-thermal module that prioritizes PV electricity<br \/>\n generation while recovering usable low-temperature heat from the back of the module. It is<br \/>\n used when a project needs both electricity and heat from limited roof area \u2014 particularly<br \/>\n domestic hot water preheating, heat pump support, pool heating and commercial hybrid solar<br \/>\n projects.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>Is PVT-E better than standard PV?<\/summary>\n<div class=\"faq-body\">\n<p>PVT-E is better only when the recovered heat can be used. For power-only projects, standard<br \/>\n PV is simpler and cheaper. For projects with domestic hot water, pool heating, process<br \/>\n preheating or heat pump support, PVT-E can increase total useful energy per square meter of<br \/>\n roof \u2014 combining up to 80% overall solar utilization vs. typically 18\u201322% for PV alone.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What electrical output does PVT-E deliver?<\/summary>\n<div class=\"faq-body\">\n<p>The PVT-E Thermoelectric Assembly model delivers <strong>580 W at STC<\/strong> from N-type<br \/>\n TOPCon cells with 22.44% module efficiency, V<sub>oc<\/sub> of 51.1 V, V<sub>mp<\/sub> of<br \/>\n 44.45 V, I<sub>sc<\/sub> of 14.31 A and I<sub>mp<\/sub> of 13.05 A. Maximum system voltage is<br \/>\n 1500 V (T\u00dcV). Confirm the current model datasheet before inverter selection.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What temperature can PVT-E supply?<\/summary>\n<div class=\"faq-body\">\n<p>PVT-E should be treated as a low-to-moderate temperature heat recovery product. The useful<br \/>\n temperature depends on irradiation, ambient conditions, flow rate, storage, heat exchanger<br \/>\n design and load temperature. For high final water temperatures, use PVT-E for preheating and<br \/>\n keep a boiler or heat pump as backup \u2014 do not rely on it as the sole heat source without<br \/>\n simulation.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>Can PVT-E work with heat pumps?<\/summary>\n<div class=\"faq-body\">\n<p>Yes. PVT-E can support a heat pump source loop, buffer tank or hot water preheating design.<br \/>\n The system must be engineered around source temperature, flow rate, freeze protection,<br \/>\n storage volume and control sequence. The PV side simultaneously offsets compressor<br \/>\n electricity, improving the overall system COP economics.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What is the main design risk for PVT-E projects?<\/summary>\n<div class=\"faq-body\">\n<p>Unused heat. A PVT-E project must confirm where the recovered heat goes, when it is used, how<br \/>\n it is stored and whether the building has enough heat demand across seasons. Without a real<br \/>\n daily heat load, the PVT-E module reduces to an expensive PV panel and the project economics<br \/>\n deteriorate.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What is the difference between PVT-E and PVT-T?<\/summary>\n<div class=\"faq-body\">\n<p>PVT-E is the balanced or electricity-first option: PV output remains the main value and heat<br \/>\n recovery adds extra energy value. <a href=\"\/products\/pvt-solar-panel\/pvt-t-type-solar-panel\/\">PVT-T<\/a> gives more emphasis<br \/>\n to thermal output while still generating electricity \u2014 it is better when the thermal load<br \/>\n drives the project ROI.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What is the difference between PVT-E and TP\/V Pro?<\/summary>\n<div class=\"faq-body\">\n<p><a href=\"\/products\/pvt-solar-panel\/tp-v-pro-type-solar-panel\/\">TP\/V Pro<\/a> is positioned as<br \/>\n a premium engineering hybrid with upgraded thermal management, cooling design and higher<br \/>\n total energy-yield positioning. PVT-E is usually more suitable for straightforward<br \/>\n residential and commercial roofs where electricity is the main priority and the project does<br \/>\n not require TP\/V Pro’s premium heat-pump or storage integration architecture.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What certifications should buyers ask for?<\/summary>\n<div class=\"faq-body\">\n<p>Request the current PVT-E datasheet, product certificate, test report reference, Solar<br \/>\n Keymark or applicable market certificate, CE documentation, ISO 9001\/14001\/45001 system<br \/>\n certificates, IEC 61215\/61730 compliance, installation manual and warranty terms (PV side,<br \/>\n thermal side and workmanship split). Requirements vary by market. Visit the <a href=\"\/company\/quality-assurance\/\">SOLETKS Quality Assurance page<\/a> for current<br \/>\n certification details.<\/p>\n<\/p><\/div>\n<\/details>\n<details>\n<summary>What information is needed for a PVT-E quote?<\/summary>\n<div class=\"faq-body\">\n<p>Send project location, building type, roof area, roof angle\/orientation, shading, target PV<br \/>\n capacity, daily hot-water demand, required water temperature, existing heat pump or boiler,<br \/>\n storage details, local minimum outdoor temperature, required certifications and installation<br \/>\n drawings or photos. A strong inquiry enables SOLETKS to return a system concept, not only a<br \/>\n unit price.<\/p>\n<\/p><\/div>\n<\/details><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"request-spec-pack\">\n<div class=\"cta-band\">\n <span class=\"sec-label\" style=\"margin-bottom:.8rem\">Get Started<\/span><\/p>\n<h2 class=\"section-h\">Request PVT-E System Design & SPEC PACK<\/h2>\n<p>Send SOLETKS your project location, available roof area, electricity target, daily hot water demand,<br \/>\n required temperature and existing heating system. SOLETKS can confirm whether <strong>PVT-E, PVT-T,<br \/>\n TP\/V Pro, standard PV or a dedicated solar thermal collector<\/strong> is the best fit \u2014 then<br \/>\n return a system concept, datasheet path and quotation basis.<\/p>\n<div class=\"btn-row\">\n <a href=\"\/contact\/\" class=\"btn btn-gold\">Request PVT-E System Design \u2192<\/a><br \/>\n <a href=\"\/products\/pvt-solar-panel\/\" class=\"btn btn-outline\">Browse All PVT Products<\/a>\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"section\" id=\"why-soletks\">\n <span class=\"sec-label\">Section 14<\/span><\/p>\n<h2 class=\"section-h\">Why Choose SOLETKS for PVT-E Projects<\/h2>\n<div class=\"split\">\n<div>\n<p>SOLETKS is a clean thermal energy company focused on solar, geothermal and air-energy integration<br \/>\n for building energy, industrial heat and renewable energy applications. Public SOLETKS<br \/>\n information highlights: <strong>7.0 GWth annual production capacity<\/strong>; <strong>117+<br \/>\n patented technologies<\/strong>; <strong>6 production bases and 7 subsidiaries<\/strong>;<br \/>\n service in <strong>50+ countries<\/strong>; and global certifications including Solar Keymark, CE<br \/>\n and ISO systems.<\/p>\n<p>For PVT-E buyers, the biggest advantage is not only the panel. It is the ability to match the<br \/>\n right hybrid solar product to the building’s real energy profile \u2014 and back it up with proper<br \/>\n documentation, system design and commissioning support.<\/p>\n<div class=\"table-wrap\" style=\"margin-top:1.4rem\">\n<table>\n<tbody>\n<tr>\n<td>Annual production capacity<\/td>\n<td class=\"val\">7.0 GWth<\/td>\n<\/tr>\n<tr>\n<td>Patented technologies<\/td>\n<td class=\"val\">117+<\/td>\n<\/tr>\n<tr>\n<td>Production bases<\/td>\n<td class=\"val\">6<\/td>\n<\/tr>\n<tr>\n<td>Countries served<\/td>\n<td class=\"val\">50+<\/td>\n<\/tr>\n<tr>\n<td>Core certifications<\/td>\n<td class=\"note\">Solar Keymark \u00b7 CE \u00b7 ISO 9001\/14001\/45001 \u00b7 IEC 61215 \u00b7 IEC 61730 \u00b7<br \/>\n T\u00dcV \u00b7 UL<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<figure class=\"split-img\">\n <img decoding=\"async\" src=\"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E03.jpg\" alt=\"SOLETKS PVT-E thermoelectric assembly quality manufacturing\" loading=\"lazy\"><figcaption>SOLETKS PVT-E quality-controlled manufacturing \u2014 85%+ automation rate<\/figcaption><\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"int-links\" style=\"margin-top:3rem\">\n <strong>Related SOLETKS Pages<\/strong><\/p>\n<ul>\n<li><a href=\"\/products\/pvt-solar-panel\/\">PVT Solar Panel Category<\/a><\/li>\n<li><a href=\"\/products\/pvt-hybrid-solar-systems\/\">PVT Hybrid Solar Systems<\/a><\/li>\n<li><a href=\"\/products\/pvt-solar-panel\/pvt-t-type-solar-panel\/\">PVT-T Type Solar Panel<\/a><\/li>\n<li><a href=\"\/products\/pvt-solar-panel\/tp-v-pro-type-solar-panel\/\">TP\/V Pro Type Solar Panel<\/a><\/li>\n<li><a href=\"\/featured-projects\/\">Featured Projects<\/a><\/li>\n<li><a href=\"\/company\/quality-assurance\/\">Quality Assurance<\/a><\/li>\n<li><a href=\"\/contact\/\">Contact SOLETKS<\/a><\/li>\n<\/ul><\/div>\n<p> <\/p>\n<div class=\"section source-notes\" id=\"source-review-notes\">\n <span class=\"sec-label\">Source & Review Notes<\/span><\/p>\n<h2 class=\"section-h\">Standards and Verification Notes<\/h2>\n<p>This guide uses SOLETKS model data for product-specific values. Buyers should request the current<br \/>\n datasheet, certificate list and project-specific engineering calculation before procurement.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.iso.org\/standard\/78801.html\" target=\"_blank\" rel=\"noopener\">ISO 9806:2025<\/a><br \/>\n defines test methods for solar thermal collectors, including hybrid collectors that co-generate heat<br \/>\n and electric power.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/61345\" target=\"_blank\" rel=\"noopener\">IEC<br \/>\n 61215-1:2021<\/a> covers design qualification and type approval requirements for terrestrial PV<br \/>\n modules.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/59803\" target=\"_blank\" rel=\"noopener\">IEC<br \/>\n 61730-1:2023<\/a> covers PV module construction requirements for safe electrical and mechanical<br \/>\n operation.<\/li>\n<li><a href=\"https:\/\/www.dincertco.de\/din-certco\/en\/main-navigation\/products-and-services\/certification-of-products\/environmental-field\/solar-thermal-products\/\" target=\"_blank\" rel=\"noopener\">DIN CERTCO Solar KEYMARK<\/a> explains Solar KEYMARK testing,<br \/>\n factory inspection and certificate renewal context for solar thermal products.<\/li>\n<\/ul>\n<p><strong>Review record:<\/strong> Content reviewed for SEO, AEO readability, schema alignment and<br \/>\n engineering-source discipline on July 1, 2026.<\/p>\n<\/p><\/div>\n<p> <\/p>\n<div class=\"ai-summary\">\n <span class=\"sec-label\">Technical Summary<\/span><\/p>\n<h2>Summary for Buyers & AI Extraction<\/h2>\n<p>SOLETKS PVT-E type solar panels are electricity-first photovoltaic-thermal panels that generate PV<br \/>\n electricity while recovering practical low-temperature heat from the same module surface. The PVT-E<br \/>\n Thermoelectric Assembly model delivers <strong>580 W at STC<\/strong> from N-type TOPCon monocrystalline<br \/>\n cells with <strong>22.44% module efficiency<\/strong>, V<sub>oc<\/sub> 51.1 V, V<sub>mp<\/sub> 44.45 V,<br \/>\n I<sub>sc<\/sub> 14.31 A, I<sub>mp<\/sub> 13.05 A and 1500 V maximum system voltage (T\u00dcV). Thermally, it<br \/>\n delivers <strong>1180 W peak light-thermal power<\/strong> with 0.6 MPa working pressure and a red copper<br \/>\n tubular-plate heat exchanger, achieving <strong>combined solar utilization up to 80%<\/strong>. Module<br \/>\n dimensions are 2279 \u00d7 1134 \u00d7 45 mm; weight 39 kg. PVT-E is best for limited-roof projects with both<br \/>\n electrical demand and usable thermal demand \u2014 domestic hot water preheating, pool heating, heat pump<br \/>\n support and low-temperature process preheating. SOLETKS reports 117+ patented technologies, 7.0 GWth<br \/>\n annual production capacity and service in 50+ countries.<\/p>\n<\/p><\/div>\n<p> <\/main><\/p>\n<p> <br \/>\n <script type=\"application\/ld+json\">\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"Article\",\n \"headline\": \"PVT-E Solar Panel Guide for Hybrid Heat\",\n \"description\": \"SOLETKS PVT-E solar panel guide covering PV output, heat recovery, sizing, PVT-E vs PVT-T, project fit, RFQ data and buyer checks.\",\n \"mainEntityOfPage\": \"https:\/\/service.soletksolar.com\/pvt-e-solar-panel-guide\/\",\n \"image\": \"https:\/\/www.soletksolar.com\/sites\/shengtuoke_website\/files\/styles\/chanp\/public\/2026-01\/PVT-E-0001.jpg\",\n \"datePublished\": \"2026-07-01\",\n \"dateModified\": \"2026-07-01\",\n \"author\": {\n \"@type\": \"Organization\",\n \"name\": \"SOLETKS Technical Content Team\"\n },\n \"publisher\": {\n \"@type\": \"Organization\",\n \"name\": \"Shandong Soletks Solar Technology Co., Ltd.\",\n \"url\": \"https:\/\/service.soletksolar.com\/\"\n },\n \"about\": [\"PVT-E solar panel\", \"photovoltaic thermal panel\", \"hybrid solar heat recovery\"]\n}\n<\/script><br \/>\n <script type=\"application\/ld+json\">\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"BreadcrumbList\",\n \"itemListElement\": [\n {\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/service.soletksolar.com\/\"},\n {\"@type\":\"ListItem\",\"position\":2,\"name\":\"Products\",\"item\":\"https:\/\/service.soletksolar.com\/products\/\"},\n {\"@type\":\"ListItem\",\"position\":3,\"name\":\"PVT Solar Panel\",\"item\":\"https:\/\/service.soletksolar.com\/products\/pvt-solar-panel\/\"},\n {\"@type\":\"ListItem\",\"position\":4,\"name\":\"PVT-E Solar Panel Guide\",\"item\":\"https:\/\/service.soletksolar.com\/pvt-e-solar-panel-guide\/\"}\n ]\n}\n<\/script><br \/>\n <script type=\"application\/ld+json\">\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"FAQPage\",\n \"mainEntity\": [\n {\"@type\":\"Question\",\"name\":\"What is a PVT-E type solar panel?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A PVT-E type solar panel is a photovoltaic-thermal module that prioritizes PV electricity generation while recovering usable low-temperature heat from the back of the module. It is used when a project needs both electricity and heat from limited roof area, especially domestic hot water preheating, heat pump support, pool heating and commercial hybrid solar projects.\"}},\n {\"@type\":\"Question\",\"name\":\"What electrical output does PVT-E deliver?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The PVT-E Thermoelectric Assembly model delivers 580 W at STC from N-type TOPCon cells with 22.44% module efficiency, Voc 51.1 V, Vmp 44.45 V, Isc 14.31 A and Imp 13.05 A. Maximum system voltage is 1500 V. Confirm the current model datasheet before inverter selection.\"}},\n {\"@type\":\"Question\",\"name\":\"Can PVT-E work with heat pumps?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. PVT-E can support a heat pump source loop, buffer tank or hot water preheating design. The system must be engineered around source temperature, flow rate, freeze protection, storage volume and control sequence. The PV side simultaneously offsets compressor electricity.\"}},\n {\"@type\":\"Question\",\"name\":\"What is the difference between PVT-E and PVT-T?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"PVT-E is the balanced or electricity-first option: PV output remains the main value and heat recovery adds extra energy value. PVT-T gives more emphasis to thermal output while still generating electricity, so it is better when the thermal load drives project ROI.\"}}\n ]\n}\n<\/script><\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SOLETKS PVT-E solar panel guide covering PV output, heat recovery, sizing, PVT-E vs PVT-T, project fit, RFQ data and buyer checks.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1728","post","type-post","status-publish","format-standard","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/posts\/1728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/comments?post=1728"}],"version-history":[{"count":1,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/posts\/1728\/revisions"}],"predecessor-version":[{"id":1731,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/posts\/1728\/revisions\/1731"}],"wp:attachment":[{"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/media?parent=1728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/categories?post=1728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/service.soletksolar.com\/lt\/wp-json\/wp\/v2\/tags?post=1728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}