Appalachian Power is a subsidiary of American Electric Power

American Electric Power

American Electric Power is a major investor-owner electric utility in various parts of the United States. AEP ranks among the nation's largest generators of electricity, owning nearly 38,000 megawatts of generating capacity in the U.S...

 of Columbus, Ohio

Columbus, Ohio

Columbus is the capital of and the largest city in the U.S. state of Ohio. The broader metropolitan area encompasses several counties and is the third largest in Ohio behind those of Cleveland and Cincinnati. Columbus is the third largest city in the American Midwest, and the fifteenth largest city...

. It is based in Charleston, West Virginia

Charleston, West Virginia

Charleston is the capital and largest city of the U.S. state of West Virginia. It is located at the confluence of the Elk and Kanawha Rivers in Kanawha County. As of the 2010 census, it has a population of 51,400, and its metropolitan area 304,214. It is the county seat of Kanawha County.Early...

 and owns the rights to Appalachian Power Park

Appalachian Power Park

Appalachian Power Park is the current home field for the West Virginia Power, a minor league baseball team in the South Atlantic League which are a Class A affiliate of the Pittsburgh Pirates. It also serves as one of two home fields for the baseball programs of both Marshall University and the...

 in Charleston. AP serves about 1 million customers in its territory, which includes parts of central and Southern West Virginia

Southern West Virginia

Southern West Virginia is a culturally and geographically distinct region in the U.S. state of West Virginia. Generally considered the heart of Appalachia, Southern West Virginia is known for its coal mining heritage and southern affinity...

, Southwest Virginia

Southwest Virginia

Southwest Virginia, often abbreviated as SWVA, is a mountainous region of Virginia in the westernmost part of the commonwealth. Southwest Virginia has been defined alternatively as all Virginia counties on the Appalachian Plateau, all Virginia counties west of the Eastern Continental Divide, or...

 and parts of Northeast Tennessee

Tri-Cities, Tennessee

In Tennessee and Virginia the name "Tri-Cities" refers to the region comprising the cities of Kingsport, Johnson City and Bristol and the surrounding smaller towns and communities in Northeast Tennessee and Southwest Virginia...

, specifically Kingsport

Kingsport, Tennessee

Kingsport is a city located mainly in Sullivan County with some western portions in Hawkins County in the US state of Tennessee. The majority of the city lies in Sullivan County...

.

Appalachian's Tennessee operations are technically and legally considered to be that of the Kingsport Power Company. The Kingsport Power name is rarely used anymore and is more for just regulatory formality, as AEP considers Appalachian Power to be the operating company in Tennessee.