In 2020, researchers tested a self-moistening hydrogel mat under solar panels; it cooled them by at least 10°C and boosted output by up to 19%

Discover how a self-moistening hydrogel mat developed by researchers can significantly improve solar panel efficiency by cooling them by up to 14°C, enhancing electricity output by up to 19% while being low-maintenance and cost-effective.

Raccontata daeconomictimes.indiatimes.com