Quick Answer
Assess local heat impact on solar panel installation sites by monitoring temperature and humidity levels, using a heat map or climate zone mapping to identify areas with high temperatures, and considering factors like shading and wind patterns.
Understanding Solar Panel Temperature Derating
Solar panels degrade faster when exposed to high temperatures. In extreme heat, panel efficiency can drop by 0.5% for every 1°C increase above 25°C. In areas with high summer temperatures, like the southwestern United States, solar panels can lose up to 10-15% of their capacity.
Assessing Local Heat Impact
To assess local heat impact, install a temperature sensor near the proposed solar panel installation site. Record temperature and humidity readings over a period of at least 6 months to account for seasonal variations. Use this data to determine if additional cooling measures, such as shading or misting, are necessary to mitigate heat-related losses.
Using Climate Zone Mapping
Consult climate zone mapping resources, such as the USDA Plant Hardiness Zone Map or the ASHRAE climate classification system, to identify areas with high temperatures. These maps can help you determine if a site is located in a hot or cool climate zone, and inform decisions about solar panel placement and design.
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