Constellation's Antelope Valley Solar Ranch One in Los Angeles County is one of the largest solar photovoltaic projects in the U.S. Its 3.8 million solar panels generate 242 MW of clean, renewable electricity, which is enough to power the equivalent of 75,000 homes. This project displaces approximately 140,000 metric tons of carbon dioxide (CO2) per year, an amount comparable to taking approximately 30,000 cars off the road.