Top Brands with Low Temperature Coefficients
| Brand / Model | Temperature Coefficient (%/°C) | Efficiency (%) | Notes |
|---|---|---|---|
| REC (Alpha Pure RX) | -0.24 | 21.6-22.6 | Best temperature coefficient on the market, loses less performance at high temperature, 25-year guarantee at 92% capacity. |
| Panasonic (EverVolt HK2 Black) | -0.24 | 21.7-22.2 | Extremely low temperature coefficient, ideal for hot climates, 25-year warranty, annual degradation very low. |
| Maxeon 7 | -0.27 | 23.5-24.1 | High efficiency with one of the lowest temperature coefficients, strong 25-year production guarantee. |
| Canadian Solar (HiKu6) | -0.29 | 21.8-23 | Slightly higher coefficient but among the best, large panel sizes increase efficiency. |
| Jinko Solar (Tiger Neo) | -0.29 | 21.52-22.52 | High efficiency with low temperature coefficient and long warranties. |
| Qcells (Q.Tron BLK M-G2+) | -0.30 | 21.3-22.5 | Popular brand with solid performance in heat, good 25-year warranty. |
Summary Insights on Temperature Coefficient
- The temperature coefficient indicates the percentage loss in power output per degree Celsius above 25°C. The lower (less negative) this number, the better the panel performs in hot conditions.
- Typical monocrystalline panels have an average temperature coefficient around -0.38%/°C, while the best performing HJT (heterojunction) and N-type cells can have coefficients as low as -0.24% to -0.27%/°C.
- Panels like REC Alpha Pure and Panasonic EverVolt have some of the lowest temperature coefficients, making them especially suitable for hot or arid climates.
- Maxeon panels offer a great combination of very high efficiency (up to 24.1%) and a low temperature coefficient (-0.27%), making them a top-tier choice for performance in heat.
Additional Considerations
- Efficiency ranges for these top panels generally fall between 21.5% and 24%, with higher efficiency often correlating with low temperature coefficients.
- Warranty and degradation guarantees also matter; Maxeon and REC provide some of the longest warranties and highest retained output after 25 years.
- Other high-efficiency brands like JA Solar and VSUN also produce quality panels but tend to have slightly higher temperature coefficients (-0.29 to -0.35%).
Conclusion
For solar panels with the lowest temperature coefficients in 2025, REC Alpha Pure (-0.24%), Panasonic EverVolt (-0.24%), and Maxeon 7 (-0.27%) stand out as the best options, combining excellent heat performance with high efficiency and strong warranties. Other notable brands include Canadian Solar and Jinko Solar with slightly higher but still very competitive coefficients around -0.29%. These brands are ideal for installations in hot climates where maintaining output despite high temperatures is critical.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-the-top-brands-for-solar-panels-with-low-temperature-coefficients/
