Austin Energy is a publicly owned utility providing electrical power to the city of Austin, Texas and surrounding areas. Established in 1895, the utility is a department of the City of Austin and returns its profits to the city's general fund to finance other city services. Austin Energy is the United States' 8th largest public utility, serving more than 440,000 customers and more than one million residents (as of 2015) within a service area of approximately 437 square miles (1,130 km2), including Austin, Travis County and a small portion of Williamson County.