Oncor Electric Delivery (formerly TXU Electric Delivery) serves miles and miles of Texas' vast energy market. The company operates the regulated power assets of parent Energy Future Holdings (formerly TXU), which include more than 118,000 miles of transmission and distribution lines serving more than 400 cities and 91 counties situated in the eastern, north-central, and western portions of the state. The company provides power to more than 3.1 million homes and businesses. Oncor Electric Delivery maintains streetlights in its service territory. The utility also provides services to competitive retail electric providers.