KO Transmission Company is an interstate pipeline company engaged in the business of transporting natural gas in interstate commerce, under authorization granted by and subject to the jurisdiction of the Federal Energy Regulatory Commission. 

KO's system originates east of Lexington, Kentucky and extends northward for approximately ninety miles to the citygates of two local distribution companies: Duke Energy Ohio (DEO) and Duke Energy Kentucky (DEK). Two upstream pipelines interconnect with KO: Columbia Gulf Transmission Company and Tennessee Gas Pipeline.

KO is a wholly-owned subsidiary of Duke Energy and its pipeline facilities are co-owned by Columbia Gas Transmission Corporation. Beginning at the origin point in Means, Kentucky, KO owns an undivided 48.77% interest in a seventy-mile portion of the system, ending at Foster Station (located in Bracken County, Kentucky). From Foster station, extending northward for twenty miles to the DEO and DEK city gates, KO owns 100% of the pipeline system.