dark clouds in a neighborhood

Do Solar Panels Work on Cloudy Days?

Solar panels still produce energy on overcast days; they just produce less of it.

Solar output on cloudy days runs at about 25% of average capacity. The panels still work, but they are working with their energy source being blocked for the most part. Both clouds and fog still allow some sun to reach your roof. Solar cells are made to capture a broad range of the solar spectrum. This allows the panels to continue working even on overcast days.