Formed in 1938, Cobb Electric Membership Corporation, more commonly known as Cobb EMC, is a non-profit electric utility company serving parts of Cobb, Cherokee, Bartow, Paulding, and small sections of Fulton counties in Georgia. In 2009, it had total sales of over 3.8 billion kilowatt-hours (13.7 billion megajoules).
It was founded in 1938 with 489 residential members and 14 business accounts, and now serves about 200,000 homes and businesses (including over 180,000 in northwest metro Atlanta), making it one of the largest electric membership corporations in the state and country. However, most residents in Cobb and other counties are customers of Georgia Power, while those within the city limits of Marietta (the Cobb county seat) are customers of Marietta Power, a municipal utility run by the city.
Cobb EMC participates in a rebate program for customers who install solar panels. In January 2009, the company joined with Green Power EMC to buy 17 megawatts of electric power from a company which upgraded the power plant at the former Fruit of the Loom factory in Rabun Gap to use logging biomass as a fuel.