Southern Company consists of four subsidiary electric utilities - Alabama Power, Georgia Power, Gulf Power, and Mississippi Power .
They also sell and transmit power in the wholesale market for about 75 other providers in Alabama, Florida, Georgia, Mississippi, and the Carolinas, through another one of their subsidiaries called Southern Power.
Other major subsidiaries and business units include Southern Nuclear, with three nuclear generating plants: the Edwin I. Hatch Nuclear Plant near Baxley, Ga., the Joseph M. Farley Nuclear Plant near Dothan, Ala. and the Alvin W. Vogtle Electric Generating Plant near Waynesboro, Ga; SouthernLINC Wireless, a communications network with a 127,000 square-mile coverage area in the Southeast; and Southern Telecom, a fiber optic wholesaler in the Southeast.
Southern Company is completing a Biomass Plant near Austin, Texas that is expected to begin serving customers in summer of 2012.