The Tennessee Valley Authority (TVA) is a unique federal corporation that is the nation's largest producer of public power, the steward of the Tennessee River System, and a regional economic development agency. Services Provided: If you use electricity, your bottom line could benefit significantly from TVA's services. Maximize your energy resources with a TVA consultation, in partnership with your local power company, that can assist you in evaluating your power needs. If you are locating to the TVA region or expanding, you may also be eligible for economic development incentives or the assistance of specialists to address electric efficiency.