Leading Solar Panels Manufacturer

Since 2018, Originating from Germany.

Reliable Solar Panels Manufacturer

Solardeland, provides you with German technology and quality solar panels.

 Wide Product Selection

We have developed an excellent range of German-quality solar panels for every application, with solar panel products from 390W to 730W, including single-sided, all-black, double-glass, transparent backsheet, all-black double-glass series.

Advanced Machinery And Equipment

Fully automated production line, German quality assurance.

Good Price

Provide wholesalers and installers with more favorable prices.

Purchase Solar Panels From Solardeland

 For OEM Customized Service
Provide customers with OEM customizable services. We have a professional design team and more than 10 years of production experience to provide you with professional product solutions.
 For Wholesalers
A rich variety of products, diverse choices, faster shipping, better prices, achieving a win-win cooperation.
 For Installers
Top-quality raw material supply chain, German technology and German quality standards, reliable product quality, ensuring long-term benefits for your solar system.

Product Structure Of Solar Panels

  • 1. Cover Glass Layer with Anti-Reflective Coating (ARC)
    Materials: High-transparency tempered glass with an anti-reflective coating (ARC) typically made of silicon dioxide (SiO₂) or silicon nitride (Si₃N₄).
    Function: The cover glass layer provides protection against environmental damage (such as rain, dust, and wind) while allowing maximum sunlight transmission. The anti-reflective coating reduces light reflection, enhancing light absorption and overall photovoltaic efficiency.
  • 2. Encapsulant (EVA/EPE/POE)
    Material: Ethylene-vinyl acetate (EVA).
    Function: Encapsulates and protects the silicon wafers, preventing moisture, dust, and mechanical damage while maintaining high light transmission.
  • 3. N-Type Solar Cell Layer
    Material: High efficiency monocrystalline silicon N-type solar cells.
    Function: The function of a solar cell is to convert sunlight into electricity. When sunlight hits the solar cell, it excites electrons, generating a flow of electricity. This is the basic principle of how a solar cell produces electrical energy.
  • 4. Encapsulant (EVA/EPE/POE)
    Material: Ethylene-vinyl acetate (EVA).
    Function: Encapsulates and protects the silicon wafers, preventing moisture, dust, and mechanical damage while maintaining high light transmission.
  • 5. Backsheet
    Material: Typically a polymer material, such as Transparent Back Sheet / Back Glass
    Function: Provides electrical insulation and physical protection, preventing moisture and environmental damage to the cells.

Production Process Of Solar Panel Factory

What Are N-TOPCon Solar Panels?

N-TOPCon solar panels refer to a type of high-efficiency solar cell technology, with "N-TOPCon" standing for "Tunnel Oxide Passivated Contact."
These are N-type solar cells that utilize tunnel oxide passivated contact technology to enhance efficiency and performance. Here are the main features and advantages of N-TOPCon solar panels:

High Efficiency

N-TOPCon solar panels typically offer higher conversion efficiency compared to traditional PERC (Passivated Emitter and Rear Cell) cells, due to better photoelectric conversion and reduced electron recombination.

Long Lifespan

N-type silicon materials exhibit better stability under environmental stress (such as light-induced degradation and high temperatures), leading to a longer lifespan for N-TOPCon panels.
Lower Light-Induced Degradation (LID)
N-type silicon materials have significantly lower LID compared to P-type silicon, ensuring more stable performance over time.
Bifacial Power Generation
Many N-TOPCon panels are designed for bifacial power generation, meaning they can generate electricity from sunlight on both the front and the back sides, thus increasing overall energy yield.
Superior Temperature Coefficient
N-TOPCon panels have a lower performance drop in high-temperature conditions, making them particularly effective in hot climates.
Innovative Structure
N-TOPCon technology uses a tunnel contact structure between a thin silicon oxide layer and a heavily doped polysilicon layer, reducing carrier recombination and enhancing cell efficiency.
Due to these features, N-TOPCon solar panels are among the most advanced solar cell technologies available, offering exceptional efficiency, stability, and long-term reliability, making them ideal for high-performance solar power systems.

Hot Sale Solar Panels


Cooperation Process

This sequence ensures a thorough and transparent process from initial inquiry to the final delivery of goods.
  • 1.Inquiry
  • 2. Quotation
  • 3. Model and Quantity Confirmation
  • 4. Final Quotation and Delivery Time
  • 5. Contract Signing
  • 6. Payment and Production
  • 7. Product and Packaging Images/Videos
  • 8. Product Test Report
  • 9. Shipment
  • Step 1: Inquiry
    Send your detailed inquiry to the supplier regarding the products you are interested in.
  • Step 2: Quotation
    Receive a quotation from Solardeland with the prices and terms.
  • Step 3: Model and Quantity Confirmation
    Confirm the specific model and quantity of the products you want to order.
  • Step 4: Final Quotation and Delivery Time
    Get the final quotation including the total price and delivery time based on the confirmed model and quantity.
  • Step 5: Contract Signing
    Sign a purchase contract with Solardeland that outlines all agreed-upon terms.
  • Step 6: Payment and Production
    Make the payment as per the contract terms, and Solardeland begins production.
  • Step 7: Product and Packaging Images/Videos
    Request and receive images or videos of the solar panels and their packaging to ensure they meet your specifications.
  • Step 8: Product Test Report
    Obtain a solar panels test report to verify quality and performance.
  • Step 9: Shipment
    Arrange for the shipment of the solar panels as per the agreed delivery schedule.
    This sequence ensures a thorough and transparent process from initial inquiry to the final delivery of goods.

Consult Your Solardeland Solar Panels Expert

Solardeland provides high-quality solar panels using advanced German technology.
By combining German engineering with China's efficient manufacturing and cost-effective supply chain, we offer competitively priced solar solutions.

Solar Panel FAQ

  • Q How to ensure warranty time and after-sales service?

    12-year Warranty for Materials and Processing.
    25-year Warranty for Extra Linear Power Output.
    Clear Warranty Policy: Develop a clear, comprehensive warranty policy that outlines the terms, conditions, and duration of your warranty. Make sure customers understand what is covered and how to make a claim.
    High Quality Products: solardeland focuses on producing high quality products that are durable and reliable. This reduces the likelihood of warranty claims and ensures customer satisfaction.
    Thorough Testing and Quality Control: Solardeland implements rigorous testing and quality control processes to identify and correct any issues before products are shipped. This helps reduce the number of warranty claims due to manufacturing defects.
    Efficient Repair and Replacement Process: Solardeland has an efficient process for handling warranty claims, including prompt repair or replacement of defective products. This helps minimize customer downtime and improve satisfaction.
    Feedback loop: Soladeland establishes a feedback loop to collect customer feedback on product performance and after-sales service, and continuously improves products and services.
    Transparency and Honesty: Be transparent and honest with customers about warranty coverage and potential limitations. This builds trust and helps manage customer expectations.
  • Q How to deal with sudden price swings?

    Efficient Production Planning: solardeland always implements a robust production planning process to help ensure that production plans are aligned with delivery schedules.
    Excellent supply chain management: A good supply chain is essential for on-time delivery.
    Efficient production processes: Optimize production processes to increase efficiency and throughput, helping to minimize delays and bottlenecks. This includes using automation, improving workflow layout and implementing lean manufacturing principles.
    Communication and collaboration: Instant and effective communication and collaboration between different departments and stakeholders (including production, logistics and customer service) to ensure a smooth delivery process.
    Continuous improvement: Regularly reviewing and improving delivery processes based on feedback and performance data helps identify areas for improvement and ensure delivery times are continually optimized.
  • Q How to ensure product quality and quantity production?

    Quality Control Processes: Implementing stringent quality control measures at every stage of production, from sourcing raw materials to final product assembly, helps ensure that each component and the final product meets specified quality standards.
    Advanced Manufacturing Technologies: Using state-of-the-art manufacturing technologies, such as automated assembly lines and robotics, can help streamline production processes, reduce errors, and improve overall efficiency and output.
    Supplier Audits and Monitoring: Regular audits and monitoring of suppliers to ensure they meet quality and quantity requirements for raw materials and components are essential for maintaining consistent production standards.
    Employee Training and Development: Providing comprehensive training programs for employees helps ensure they understand and adhere to quality standards and production processes, leading to higher-quality products.
    Continuous Improvement Initiatives: Implementing continuous improvement programs, such as Six Sigma or Total Quality Management, can help identify and address production inefficiencies and quality issues, leading to better product quality and higher production yields.
    Robust Testing and Inspection Protocols: Implementing rigorous testing and inspection protocols for both raw materials and finished products helps identify and rectify any defects or issues, ensuring only high-quality products are released to the market.
    Environmental and Safety Standards Compliance: Adhering to environmental and safety standards not only ensures the factory operates responsibly but also contributes to product quality and quantity by reducing disruptions and risks.

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