Question 1

Core Highlights

1
          High-Efficiency N-Type Power Generation — Stable, Reliable Output

2
          Uniform Temperature Heat Collection — Dual Energy Efficiency Upgrade

3
          Reinforced Protection — Engineered for Harsh Environments

Why PVT Type E?

Traditional solar systems face a major challenge:

PV panels generate electricity, but most of their heat is wasted.

Solar thermal systems produce heat, but cannot supply electricity.

As a result:

Energy utilization remains low

Module temperature rises, accelerating aging

Power output decreases due to "hot spot effect"

PVT Type E completely breaks this limitation.
      
        It integrates photovoltaic + photothermal technologies within one module, functioning both as a power station and a thermal energy plant, pushing the overall solar utilization rate up to 60% and enabling a true high-efficiency, low-carbon energy system.

Four Core Advantages

1. Dual-Energy Synergy — Zero Energy Waste

Integrated thermo-PV coupling technology

Real-time temperature control keeps the module below 45°C

Solves hot-spot and high-temp power decay

Extends system lifespan and improves long-term ROI

📌 Result: Up to 50% higher total energy yield compared to traditional PV.

2. Vacuum Lamination — Stronger Thermal Output

A vacuum-assisted lamination structure provides:

Lower thermal resistance

Faster heat transfer

Up to 40% higher thermal utilization efficiency

🛁 Supports high-demand usage: Hot water / winter heating / heat pump supply without energy waste.

3. Intelligent Temperature Control — Higher Efficiency, Longer Life

Monitors and regulates surface temperature in real time

Maintains uniform temperature difference within ±1°C

Thermal output can reach 2× electrical generation

💰 One investment, double returns: Electricity + heat recovery = far greater economic benefits than standard PV.

4. Smart Connectivity & Lower O&M

Built-in sensors + intelligent control module

Connects with building energy management (BEMS)

Adaptive matching of heating and electricity load

📉 Operation & maintenance cost reduced by up to 35%

Multi-Scenario Applications

Application Scenario
          System Benefits

Office / Residential Hot Water Supply
          24/7 low-cost hot water, replaces electric/gas heaters

Swimming Pool Heating & Seasonal Extension
          Low-cost heating during spring & autumn, longer pool usage period

Electricity-Heating-Cooling for Single Buildings
          Works with heat pumps for full building energy independence

Capillary Low-Temperature Heating
          Uniform, comfortable radiant heating with reduced energy use

Seasonal Geothermal Energy Storage
          Stores summer heat → supplements winter geothermal system

Engineering-Grade Technology

High-Efficiency Power Generation

N-type TOPCon monocrystalline cells

Excellent temperature coefficient for stable output in weak light

Ideal for commercial, industrial, and residential buildings

Uniform Thermal Collection & Cooling

High-purity aluminum plate heat absorption

Precision flow channels maintain ±1°C surface temperature

Cooling boosts PV generation + heat recovery efficiency

Extreme-Weather Protection

Anodized 6063-T5 aluminum frame with 180 MPa tensile strength

IP65 high-resistance sealing

Resistant to: Rain, snow, sandstorms

Coastal salt spray corrosion

High altitude and cold/heat extremes

Technical Specifications

Electrical Parameters

Max. PV Power (STC)
          580 W

Cell Type
          144-cell N-type TOPCon

Efficiency
          22.44%

Max. System Voltage
          1500V (TÜV)

Thermal Parameters

Peak Thermal Power
          1180 W

Heat Exchanger Capacity
          1.2 L

Media
          Glycol solution / water

Working Pressure
          0.6 MPa

Heat Exchanger Material
          Copper

Physical Parameters

Dimensions (mm)
          2279 × 1134 × 45

Weight
          39 kg

Operating Temp
          -40°C ~ 85°C

Protection
          IP65

Container Loading
          616 units / 40ft

🌍 Application Fields

Low-temperature radiant heating

Swimming pool heating

Seasonal thermal storage

Heat pump hybrid systems

Building electricity + heating/cooling integration

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Our Projects
            Global Solar Energy Excellence
            Pioneering sustainable energy solutions across continents, delivering innovative solar heating and hot water systems.

Featured

Centralized Solar Heating for Saga County Town in Shigatse City
                    
                        2019
                        Shigatse, Tibet
                        107,000 m²
                    
                    EFPC115 large flat-plate collectors provide heating coverage for 107,000 m², replacing traditional coal and yak dung heating. Reduces coal consumption by 2,424 tons annually.
                    
                        World's first high-altitude solar centralized heating
                        First full-chain turnkey solar heating project
                        Tibet's first large-scale solar heating

Get Quote

View Details

Tianjin School TPV Pro+ Heat Pump Project
                        
                            2024
                            Tianjin
                            3,000 m²
                        
                        TPV Pro+ heat pump system meets students' heating needs while generating on-site electricity.

Get Quote

View Details

APEC Summit Hotel Hot Water System
                        
                            2014
                            Beijing
                            50 tons/day
                        
                        Supplies hot water for APEC Summit hotel. Saves 150,000 kWh annually, reduces CO2 by 74 tons.

Get Quote

View Details

Florida Resort Villa Hot Water Project
                        
                            2022
                            Florida, USA
                            200L/day
                        
                        Flat-plate water heaters provide 200L daily hot water for each resort villa.

Get Quote

View Details

Harz Church Hot Water Project
                        
                            2021
                            Germany
                            22 tons/day
                        
                        Engineering-grade collectors in series/parallel configuration provide reliable hot water supply.

Get Quote

View Details

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.meta-tags span {
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.featured-content p {
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.achievements-list {
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.achievement {
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.featured-actions {
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.btn-primary, .btn-secondary {
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    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
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.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
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.btn-primary svg {
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.btn-primary:hover {
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.btn-primary:hover svg {
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.btn-secondary {
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.btn-secondary:hover {
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.project-card {
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    overflow: hidden;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    opacity: 0;
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}

.project-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
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.project-card:hover::before {
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.card-image {
    height: 160px;
    overflow: hidden;
    flex-shrink: 0;
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.card-image img {
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    height: 100%;
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.project-card:hover .card-image img {
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.card-content {
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.card-meta {
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.card-meta span {
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    padding: 3px 10px;
    background: linear-gradient(135deg, #e0f2fe, #bae6fd);
    border-radius: 10px;
    border: 1px solid #7dd3fc;
}

.card-content p {
    font-size: 14px;
    line-height: 1.6;
    color: #64748b;
    margin-bottom: 16px;
    flex: 1;
}

/* Card Actions */
.card-actions {
    display: flex;
    gap: 8px;
    margin-top: auto;
}

.card-actions .btn-primary,
.card-actions .btn-secondary {
    flex: 1;
}

@media (max-width: 1200px) {
    .container {
        padding: 0 30px;
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    .section-title {
        font-size: 38px;
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    .projects-layout {
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    .featured-image {
        height: 260px;
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    .card-image {
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@media (max-width: 1024px) {
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    }
    
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        height: 240px;
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    .card-actions {
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}

@media (max-width: 640px) {
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    .card-image {
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}

@media (max-width: 480px) {
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    .featured-image {
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    .featured-content h3 {
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.certifications-section {
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.certifications-container {
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      margin: 0 auto;
      padding: 0 40px;
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/* Section Header */
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      text-align: center;
      margin-bottom: 60px;
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.certifications-label {
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      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 2px;
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      margin-bottom: 15px;
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      font-weight: 800;
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.certifications-title .highlight {
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.certifications-description {
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      max-width: 900px;
      margin: 0 auto;
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/* Tabs Navigation */
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      margin-bottom: 50px;
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.cert-tab {
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      font-size: 15px;
      font-weight: 600;
      color: #64748b;
      background: white;
      border: 2px solid #e2e8f0;
      border-radius: 50px;
      cursor: pointer;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

.cert-tab::before {
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      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
      transition: left 0.5s ease;
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.cert-tab:hover {
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      color: #3b82f6;
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
    }

.cert-tab:hover::before {
      left: 100%;
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.cert-tab.active {
      background: linear-gradient(135deg, #3b82f6, #2563eb);
      color: white;
      border-color: #3b82f6;
      box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
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/* Tab Content */
    .cert-tab-content {
      display: none;
      animation: fadeIn 0.5s ease;
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.cert-tab-content.active {
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@keyframes fadeIn {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

/* Certificates Grid - 4 columns */
    .certificates-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 25px;
      margin-bottom: 40px;
    }

.certificate-card {
      background: white;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      transition: all 0.4s ease;
      cursor: pointer;
      position: relative;
    }

.certificate-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, #3b82f6, #2563eb);
      transform: scaleX(0);
      transition: transform 0.4s ease;
    }

.certificate-card:hover {
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      box-shadow: 0 12px 40px rgba(59, 130, 246, 0.2);
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.certificate-card:hover::before {
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.certificate-image {
      width: 100%;
      height: 280px;
      overflow: hidden;
      background: #f1f5f9;
      position: relative;
    }

.certificate-image img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      padding: 15px;
      transition: transform 0.5s ease;
    }

.certificate-card:hover .certificate-image img {
      transform: scale(1.08);
    }

.certificate-badge {
      position: absolute;
      top: 12px;
      right: 12px;
      background: linear-gradient(135deg, #3b82f6, #2563eb);
      color: white;
      padding: 5px 12px;
      border-radius: 20px;
      font-size: 10px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    }

.certificate-info {
      padding: 20px;
    }

.certificate-name {
      font-size: 16px;
      font-weight: 700;
      color: #1e293b;
      margin: 0 0 6px 0;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

.certificate-type {
      font-size: 13px;
      color: #64748b;
      margin: 0;
    }

/* Lightbox Modal */
    .lightbox-modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.95);
      z-index: 10000;
      justify-content: center;
      align-items: center;
      padding: 40px;
      animation: lightboxFadeIn 0.3s ease;
    }

.lightbox-modal.active {
      display: flex;
    }

@keyframes lightboxFadeIn {
      from {
        opacity: 0;
      }
      to {
        opacity: 1;
      }
    }

.lightbox-content {
      position: relative;
      max-width: 95%;
      max-height: 95%;
      display: flex;
      justify-content: center;
      align-items: center;
      animation: zoomIn 0.4s ease;
    }

@keyframes zoomIn {
      from {
        transform: scale(0.8);
        opacity: 0;
      }
      to {
        transform: scale(1);
        opacity: 1;
      }
    }

.lightbox-content img {
      max-width: 100%;
      max-height: 90vh;
      width: auto;
      height: auto;
      object-fit: contain;
      border-radius: 8px;
      box-shadow: 0 20px 80px rgba(0, 0, 0, 0.5);
    }

.lightbox-close {
      position: fixed;
      top: 30px;
      right: 30px;
      width: 50px;
      height: 50px;
      background: rgba(255, 255, 255, 0.95);
      border: none;
      border-radius: 50%;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s ease;
      z-index: 10001;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

.lightbox-close:hover {
      background: white;
      transform: rotate(90deg) scale(1.1);
    }

.lightbox-close svg {
      width: 24px;
      height: 24px;
      stroke: #1e293b;
      stroke-width: 2.5;
    }

.lightbox-info {
      position: fixed;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(255, 255, 255, 0.95);
      padding: 12px 24px;
      border-radius: 30px;
      font-size: 14px;
      color: #1e293b;
      font-weight: 600;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
      backdrop-filter: blur(10px);
    }

/* Responsive Design */
    @media (max-width: 1200px) {
      .certificates-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
      }

.certificate-image {
        height: 260px;
      }
    }

@media (max-width: 992px) {
      .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }

.certificate-image {
        height: 280px;
      }
    }

@media (max-width: 768px) {
      .certifications-section {
        padding: 60px 0;
      }

.certifications-container {
        padding: 0 20px;
      }

.certifications-title {
        font-size: 36px;
      }

.certifications-description {
        font-size: 16px;
      }

.cert-tabs {
        gap: 8px;
      }

.cert-tab {
        padding: 10px 20px;
        font-size: 14px;
      }

.certificate-image {
        height: 240px;
      }

.lightbox-modal {
        padding: 20px;
      }

.lightbox-close {
        top: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
      }

.lightbox-info {
        bottom: 20px;
        font-size: 13px;
        padding: 10px 20px;
      }
    }

@media (max-width: 576px) {
      .certificates-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

.certificate-image {
        height: 300px;
      }

.certifications-title {
        font-size: 28px;
      }

.lightbox-content img {
        max-height: 80vh;
      }
    }

International Standards
      
        Global Certifications & Quality Assurance

SOLETK Solar products are certified to meet international quality and safety standards, including Solar Keymark, CE, and ISO. Below are the individual certificates for each product, demonstrating SOLETK Solar's commitment to reliability, performance, and compliance.

All Certificates
      ISO Certifications
      Solar Keymark
      Product Certificates

Test Report

Test Report Certificate

Accepted Answer

Quality Assurance Report

Question 2

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 3

ISO 9001 Quality Management

Accepted Answer

International Organization for Standardization

Question 4

ISO 14001 Environmental Management

Accepted Answer

International Organization for Standardization

Question 5

ISO 45001 Occupational Health & Safety

Accepted Answer

International Organization for Standardization

Question 6

Air Solar Collector

Accepted Answer

Product Certification

Question 7

Flat Plate Solar Collector

Accepted Answer

Product Certification

Question 8

PVT Solar System

Accepted Answer

Product Certification

Question 9

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 10

Solar Water Heater

Accepted Answer

Product Certification

Question 11

Vacuum Tube Solar Collector

Accepted Answer

Product Certification

Question 12

ISO 9001 Quality Management

Accepted Answer

International Organization for Standardization

Question 13

ISO 14001 Environmental Management

Accepted Answer

International Organization for Standardization

Question 14

ISO 45001 Occupational Health & Safety

Accepted Answer

International Organization for Standardization

Question 15

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 16

Solar Keymark Certification

Accepted Answer

European Quality Standard

Question 17

Air Solar Collector

Accepted Answer

Product Certification

Question 18

Flat Plate Solar Collector

Accepted Answer

Product Certification

Question 19

PVT Solar System

Accepted Answer

Product Certification

Question 20

Solar Water Heater

Accepted Answer

Product Certification

Question 21

Vacuum Tube Solar Collector

Accepted Answer

Product Certification

Question 22

Solar Integration

Accepted Answer

Advanced flat-plate collector technology maximizing energy efficiency

Question 23

117+ Patents

Accepted Answer

Cutting-edge innovation portfolio protecting proprietary technologies

Question 24

Research Partners

Accepted Answer

Strategic collaboration with leading institutions worldwide

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PVT Type E Solar Panels

PVT Type E Thermoelectric Twin Module

Core Highlights

Why PVT Type E?

Four Core Advantages

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Tekniset tiedot

🌍 Application Fields

Globaali Aurinkoenergian huippuosaaminen

Keskitetty aurinkolämmitys Saga-kunnan kaupungissa Shigatsessä

Tianjin School TPV Pro+ Lämmityspumppuprojekti

APEC-huippukokouksen hotellikohteen kuuman veden järjestelmä

Florida Resort Villa Hot Water Project

Harzin kirkon kuuman veden projekti

Globaali sertifiointi & Laadunvarmistus

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Tasolevy aurinkokeräin

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Aurinkovesilämmitin

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Tasolevy aurinkokeräin

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Aurinkovesilämmitin

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Johtamassa tulevaisuuden Puhdas energia

Ytimemme vahvuudet

Aurinkoenergian integrointi

117+ patenttia

Tutkimuskumppanit

SOLETKS – The First Choice for Global Customers

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PVT Type E
Solar Panels