Different solar panel technologies have varying temperature coefficients, which determine how much a panel’s power output decreases with each degree Celsius increase in temperature. Here’s a comparison of several common technologies:
Temperature Coefficients by Solar Panel Technology
| Solar Panel Technology | Temperature Coefficient Range |
|---|---|
| P-Type Crystalline Silicon (Polycrystalline and Monocrystalline) | -0.38% to -0.43% per °C |
| N-Type Monocrystalline IBC | -0.26% to -0.30% per °C |
| N-Type Monocrystalline TOPcon | -0.29% to -0.32% per °C |
| Heterojunction (HJT) | -0.25% to -0.27% per °C |
| Thin Film | Approximately -0.2% per °C |
Key Points
- P-Type Crystalline Silicon (Polycrystalline and Monocrystalline): These have relatively high temperature coefficients, making them less efficient at higher temperatures. Monocrystalline P-type often ranges from -0.35% to -0.40%, while polycrystalline ranges from -0.39% to -0.43%.
- N-Type Monocrystalline (IBC and TOPcon): N-type solar cells generally perform better at higher temperatures due to lower temperature coefficients. Monocrystalline N-type IBC cells have coefficients between -0.26% and -0.30%, and TOPcon cells between -0.29% and -0.32%.
- Heterojunction (HJT): HJT technology offers one of the best temperature coefficients, typically between -0.25% and -0.27%, making them ideal for hot climates.
- Thin Film: Thin film solar panels have a lower temperature coefficient compared to traditional crystalline silicon panels, often around -0.2% per °C, which helps them maintain efficiency in hotter conditions.
Conclusion
In summary, solar panel technologies like Heterojunction (HJT) and N-type monocrystalline cells are more resistant to high temperatures, while traditional P-type crystalline silicon panels suffer more efficiency loss. Thin film panels also offer advantages in hot conditions due to their lower temperature coefficient. Choosing the right technology can significantly impact the performance of a solar panel system, especially in areas with extreme temperature variations.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-do-different-solar-panel-technologies-compare-in-terms-of-temperature-coefficient/
