Puget Sound Energy is one of the largest and oldest utility companies in Washington that serves more than 1 million electric customers and over 700,000 natural gas customers. Founded in 1873, the company has a nearly 6,000-square-mile service area. It provides electricity to customers in the residential, commercial and government sectors. The company offers services to builders for various construction projects. Puget Sound Energy serves approximately 100 cities and towns in more than 10 counties in Washington. The company additionally participates in community welfare programs and supports nonprofit organizations. Puget Sound Energy is a part of Puget Energy, which offers retail utility services.