PPL Corporation is an energy company headquartered in Allentown, Pennsylvania, United States. It currently controls about 8,000 megawatts of regulated electric generating capacity in Kentucky and delivers electricity to more than 10 million customers in Pennsylvania, Kentucky, and the United Kingdom. PPL is the parent to seven regulated utility companies in the U.S. and U.K., and it also provides natural gas delivery service to 329,000 customers in Kentucky. PPL Electric Utilities (formerly known as PP&L and Pennsylvania Power and Light) is PPL Corporation's primary subsidiary.