California has nearly half of the nation's solar electricity generating capacity

The United States has slightly more than 20,000 megawatts (MW) of solar generating capacity, which includes utility-scale solar photovoltaic (PV) and solar thermal installations, as well as distributed generation solar PV systems, also known as rooftop solar. As of the end of November 2015, nearly half of the nation's solar capacity was located in California. More »