SolarCity Corporation is an American company that specializes in solar energy services. Headquartered in San Mateo, California, it is the largest solar energy services provider in the US. Among its primary services, the company designs, manufactures, permits, finances, sells, installs, maintains, and monitors solar energy systems and panels for residential, commercial and government applications. SolarCity sells renewable energy to customers at prices below utility rates, with a focus on reducing the cost of solar energy. The company has over 15,000 employees.