A cold, sunny environment is the optimal operating condition for solar panels. Counterintuitively, it’s heat that actually reduces solar efficiency. Lab tests have shown that panels start to lose efficiency above 77ºF.
News flash: Solar works in cold weather By SPW | February 5, 2019
By Manish Nayar, CEO, OYA Solar
The polar vortex blew some frigidly cold weather into the U.S. last week. It also brought out some confused comments about solar in cold weather
like this one: