NREL says long-term degradation of 8 GW of US solar 'matches expectations'

Research by the National Renewable Energy Laboratory (NREL) on the degradation of almost 8 GW of US solar shows that PV systems are degrading at a modest rate, within expectations. It says most PV systems experience minimal damage from short-term extreme weather, but warns of the risk of powerful hail, wind and snow.A research team from the US Department of Energy's NREL has reviewed the degradation of commercial and utility-scale PV sites from across the United States between 2008 and 2022. Their data set, thought to be the largest of its kind for such a project, consisted of data from 25,000 ...

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