Lower- and middle-income households may be eligible for subsidies or low-cost loans to install solar panels as part of a federal program. Solar panels sit on the roof of a Gulfport home in this September 2017 file photo. Three Florida nonprofits were ...

In sunny California, solar panels are everywhere. They sit in dry, desert landscapes in the Central Valley and are scattered over rooftops in Los Angeles’s urban center. By last count, the state had nearly 47 gigawatts of solar power installed — enough to power 13.9 million homes and provide over a quarter of the Golden State’s electricity.