GRANKIA GT680W-132M highest watt topcon bifacial solar panel 680w stands out as one of the highest wattage options available in the market, making it an ideal choice for both residential and commercial applications.
This topcon bifacial solar panel 680w is engineered to capture sunlight from both sides, allowing it to harness reflected light from the ground and surrounding surfaces. This unique feature can increase overall energy production by up to 30%, depending on installation conditions.
Built with high-quality materials, the bifacial solar panel 680w can withstand harsh weather conditions, including heavy snow loads and high winds. Its robust construction ensures long-term reliability and performance.

Bifacial Solar Panel 680W Features
High Power Output
With a maximum output of 680 watts, this bifacial solar panel is designed to meet the energy needs of larger installations, reducing the number of panels required and optimizing space utilization.
Enhanced Light Absorption
The bifacial design, combined with advanced anti-reflective coatings, allows the panel to absorb more sunlight. This results in increased energy generation, particularly in environments with reflective surfaces, such as water or light-colored ground.
Low Light Performance
These solar panels are engineered to perform exceptionally well in low-light conditions, such as cloudy days or early mornings. This capability ensures that homeowners can still generate electricity even when sunlight is not at its peak.
PID Resistance
The bifacial solar panel can be resistant to Potential Induced Degradation (PID), a common issue that can affect solar panel performance over time. This resistance helps maintain the panel’s efficiency and longevity, ensuring reliable energy output throughout its lifespan.
Aesthetic Appeal
The sleek design of the GT680W-132M not only maximizes efficiency but also enhances the visual appeal of solar installations. Its modern look makes it suitable for various architectural styles.
Technical Specifications
- Module Type: GT680W-132M
- Power Output: 680W
- Cell Type: N-TOPCon MBB (210mm)
- Cell Arrangement: 132Pcs (6x11x2)
- Bifacial Factor: Up to 80% additional power gain from rear side
- Efficiency: Up to 21.89%
- Dimensions: Optimized for easy handling and installation
- Glass: Dual-glass (tempered, anti-reflective coating)
- Frame: Anodized aluminum alloy for added rigidity
- Connector: Industry-standard, compatible with most inverters
- Operating Temperature: -40°C to +85°C
Maintenance Guide
Regular Cleaning
- Clean the panels at least twice a year, or more frequently if you live in a dusty area or near trees that shed leaves.
- Use a soft brush or sponge with mild soap and water to gently remove dirt, dust, and debris. Avoid using abrasive materials that could scratch the surface.
- If cleaning from the roof, ensure you use proper safety equipment and consider hiring a professional if you are not comfortable doing it yourself.
Inspect for Damage
- Regularly inspect the panels for any visible signs of damage, such as cracks, chips, or discoloration. Look for loose connections or any signs of wear on the mounting hardware.
- Consider having a professional inspection annually to check for any underlying issues that may not be visible.
Monitor Performance
- Keep track of the energy output of your solar system. If you notice a significant drop in performance, it may indicate a problem that needs to be addressed.
- If your panels are equipped with smart monitoring technology, regularly check the app or web platform for performance data and alerts.
Inspect Wiring and Connections
- Regularly check the wiring and electrical connections for signs of wear, corrosion, or loose connections. Ensure that all connections are secure and free from moisture.
- If your system includes an inverter, check its performance and ensure it is functioning correctly. Follow the manufacturer’s guidelines for inverter maintenance.
Keep Surrounding Area Clean
- Maintain the area around the solar panels by keeping it free of debris, leaves, and other materials that could obstruct sunlight or cause damage.
- Monitor for any signs of pests or animals that may nest near or under the panels, as they can cause damage or block sunlight.
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