Yes.
Solar panels still generate electricity on cloudy days and in cold weather, albeit less.
Clouds cut output as less sunlight reaches the panels, but they continue producing power from indirect light. Snow cover can temporarily block light, though it is typically not obstructed by thin layers of snow. Additionally, most solar panels in the U.S. run more efficiently in cooler weather, as heat lowers performance.
Winter generation can be lower due to shorter days, notably at middle latitudes; cities like Denver receive nearly three times more solar energy in June than December. This mainly affects what share of a home’s electricity solar covers, especially where heating raises demand. Average winter electricity use of U.S. homes is estimated to be six times that of summer use.
Despite seasonal dips, solar still displaces fossil fuel electricity over the year, delivering large net emissions reductions across a panel’s multidecade lifespan.
See full source list below.
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- Renewable Energy Journal On the investigation of photovoltaic output power reduction due to dust accumulation and weather conditions
- Renewable Energy Journal Temperature and thermal annealing effects on different photovoltaic technologies
- ACS Omega Journal Comprehensive Analysis of Solar Panel Performance and Correlations with Meteorological Parameters
- SEIA What happens to solar panels when it’s cloudy or raining?
- U.S. Department of Energy Solar Photovoltaics Supply Chain Deep Dive Assessment
- U.S. Department of Energy Let it Snow: How Solar Panels Can Thrive in Winter Weather
- Columbia Law School Sabin Center for Climate Change Law Rebutting 33 False Claims About Solar, Wind, and Electric Vehicles