DPL Inc. through its subsidiary The Dayton Power and Light Company is a public utility that sells electricity to residential commercial industrial and governmental customers in a 6 000-square-mile (16 000 km) area of West Central Ohio. The Dayton Power and Light Company was incorporated in 1911 under the laws of Ohio. DP&L is the principal subsidiary of DPL providing approximately 99% of DPL’s total consolidated revenue and approximately 92% of DPL’s total consolidated asset base.