American Electric Power is one of the largest electric utilities in the United States, delivering electricity to more than 5 million customers in 11 states. AEP ranks among the nation’s largest generators of electricity, owning nearly 38,000 megawatts of generating capacity in the U.S. AEP also owns the nation’s largest electricity transmission system, a nearly 39,000-mile network that includes more 765 kilovolt extra-high voltage transmission lines than all other U.S. transmission systems combined. AEP’s transmission system directly or indirectly serves about 10 percent of the electricity demand in the Eastern Interconnection, the interconnected transmission system that covers 38 eastern and central U.S. states and eastern Canada, and approximately 11 percent of the electricity demand in ERCOT, the transmission system that covers much of Texas. AEP’s utility units operate as AEP Ohio, AEP Texas, Appalachian Power (in Virginia, West Virginia), AEP Appalachian Power (in Tennessee), Indiana Michigan Power, Kentucky Power, Public Service Company of Oklahoma, and Southwestern Electric Power Company (in Arkansas, Louisiana and east Texas). AEP’s headquarters are in Columbus, Ohio.

For additional general information, see the 'Facts at a glance', 'AEP leadership', and 'History' sections. For information about the company's business activities, see the sections on 'Energy marketing', 'Power plants and other assets', 'Regulated utility operations', and our list of 'AEP Web Sites.'

AEP actively supports education activities in the communities in which we work. We also provide key economic development support in those communities.

If you are seeking additional information on coal offers, conducting EDI transactions with AEP, AEP's industry-standard meter bar codes system, or AEP's relationship with its suppliers, please see 'Doing business with AEP.'