It turns out it can be a win-win situation - where you produce more food in addition to electricity.
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The cooling effect due to enhanced evapotranspiration and surface albedo from vegetation and soil is more significant than that induced by greater panel height; and the passive cooling adds to solar panel efficiency, compared with exposed soil or gravel, according to the paper. Better yet, however, the temperature drops leads to an improved solar panel lifespan – and improved, long-term economic potential.
“As you decrease the solar panel operating temperature, you can increase efficiency and improve the longevity of your solar modules,” said Williams, “We’re showing dual benefits. On one hand, you have food production for farmers, and on the other hand, we’ve shown improved longevity and improved conversion efficiency for solar developers.”
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a tip of the hat to Sukie