Oglethorpe Power Corporation is a medium-sized electric utility in Georgia, United States.

Formed in 1974, Oglethorpe is a not-for-profit cooperative owned by the 38 electric membership corporations that it serves.

In 1974, 39 Georgia-based EMCs incorporated Oglethorpe Power Corporation to invest in generating capacities and transmission lines.

[1] Oglethorpe Power owns 817 megawatts of the 1,095-megawatt Rocky Mountain Hydroelectric Plant, a pure pumped-storage hydroelectric plant that stores energy during periods of low electricity demand and produces electricity during periods of high demand.

[5][6] Lead partner Georgia Power agreed to pay an additional proportion of any project completion costs beyond $9.2 billion.