HILCO Electric Cooperative was created in 1936.
Pedernales Electric Cooperative was created in 1938.
Choptank Electric Cooperative was created in 1938.
Bartlett Electric Cooperative was created in 1935.
Vermont Electric Cooperative was created in 1938.
Southern Maryland Electric Cooperative was created in 1937.
Fox Islands Electric Cooperative was created in 1974.
Cooke County Electric Cooperative was created in 1938.
Deaf Smith Electric Cooperative was created in 1936.
Fort Belknap Electric Cooperative was created in 1939.
Jemez Mountains Electric Cooperative was created in 1948.
Old Dominion Electric Cooperative was created in 1948.
Brazos Electric Power Cooperative was created in 1941.