Quick Answer
Solar panels that are optimized for high temperatures typically carry certifications such as IEC 61730 (for safety) and IEC 61701 (for salt mist corrosion resistance), as well as industry standards like UL 1703 for fire and electrical hazard testing. Some manufacturers also specify temperature coefficients for their panels.
High-Temperature Performance Standards
When evaluating solar panels for high-temperature performance, look for products that meet or exceed industry standards for temperature testing. The International Electrotechnical Commission (IEC) 61701 standard, for example, tests solar panels for corrosion resistance in salt mist environments, simulating coastal and industrial conditions. This standard is particularly relevant for panels installed in regions with high humidity and salt exposure.
Temperature Derating Factors
Solar panels degrade more rapidly in high temperatures, with temperature coefficients typically ranging from -0.3% to -0.5% per degree Celsius. This means that for every 1°C increase in temperature, panel efficiency decreases by 0.3-0.5%. To mitigate this effect, some manufacturers specify temperature derating factors, where they reduce the expected energy output of the panel at high temperatures.
Manufacturer Specifications and Testing
To ensure high-temperature performance, manufacturers should specify temperature testing regimes in their product documentation. This includes details on the maximum operating temperature, temperature derating factors, and any specific testing procedures used to validate the panel’s performance. By scrutinizing these specifications and testing procedures, installers and end-users can make informed decisions about the suitability of a solar panel for high-temperature environments.
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