Oklaunion Power Plant is a 650-megawatt (MW), coal power plant located southeast of Vernon, Texas, in Wilbarger County, Texas.

The construction for Oklaunion began in 1982 and was commissioned by West Texas Utilities, a forerunner of AEP.

[4] In 2017, the plant received 719,467 short tons of coal from the North Antelope Rochelle Mine by train according to the Energy Information Administration (EIA).

[5] The plant's cooling source came from Lake Diversion, located in Archer and Baylor County, Texas.

[7][8] The plant was bought by Frontier Energy, which planned to convert it to natural gas over five years.