DEMCO, now the largest electric cooperative in Louisiana, was formed in August of 1938. One of the fastest growing cooperatives in the nation, DEMCO powers over 112,000 meters serving more than a half-million members in seven southeast parishes of Louisiana: Ascension, East Baton Rouge, East Feliciana, Livingston, St. Helena, West Feliciana, and Tangipahoa. We maintain a commitment to providing safe, reliable, and competitively priced energy services to our members.