Description of Business DP&amp;L is a public utility incorporated in 1911 under the laws of Ohio. Beginning in 2001, Ohio law gave Ohio consumers the right to choose the electric generation supplier from whom they purchase retail generation service; however, retail transmission and distribution services are still regulated. DP&amp;L has the exclusive right to provide such transmission and distribution services to approximately 523,000 customers located in West Central Ohio. Additionally, DP&amp;L provides retail SSO electric service to residential, commercial, industrial and governmental customers in a 6,000 - square mile area of West Central Ohio. Through September 30, 2017, DP&amp;L owned undivided interests in multiple coal-fired and peaking electric generating facilities as well as numerous transmission facilities. On October 1, 2017, the DP&amp;L -owned generating facilities were transferred to AES Ohio Generation, an affiliate of DP&amp;L and wholly-owned subsidiary of DPL , through an asset contribution agreement to a subsidiary that was merged into AES Ohio Generation. As a result of Generation Separation, DP&amp;L now only has one reportable segment, the Utility segment. In addition to DP&amp;L's electric transmission and distribution businesses, the Utility segment includes revenues and costs associated with DP&amp;L's investment in OVEC and the historical results of DP&amp;Ls Beckjord and Hutchings Coal generating facilities, which have either been closed or sold. Principal industries located in DP&amp;Ls service territory include automotive, food processing, paper, plastic, health care, data management, manufacturing and defense. DP&amp;L's distribution sales reflect the general economic conditions, seasonal weather patterns, the proliferation of energy efficiency and distributed renewable resources and the market price of electricity. Through September 30, 2017, DP&amp;L sold its generated energy and capacity into the wholesale market. After September 30, 2017, DP&amp;L continues to sell its propor