Utility holding company PPL Corporation provides electricity and natural gas to customers in the United States and the United Kingdom. Operating through three segments - Kentucky Regulated, Pennsylvania Regulated, and Rhode Island Regulated - PPL Corporation's customer base includes those in Louisville and adjacent areas of Kentucky, customers in central, southeastern, and western Kentucky, and those in five counties in southwestern Virginia. Additionally, the company delivers electricity to customers in 29 counties in eastern and central Pennsylvania, while generating electricity from coal, gas, hydro, and solar sources in Kentucky. PPL Corporation, which was established in 1920 and is headquartered in Allentown, Pennsylvania, also sells wholesale electricity to two Kentucky municipalities.