Electricity providers in the U.S. 2023, by type

Municipal utilities and cooperatives are the most common types of electricity providers in the United States. In 2023, there were approximately 463 municipal utilities and 604 cooperative utilities in the North American country. 

Who owns utilities?

Although U.S. municipalities operate numerous utilities, large investor-owned utilities (IOUs) serve a larger base of customers per company. IOUs are the main utility provider in dense and highly populated areas on both the East and West Coasts. Southern California Edison and Florida Power were the utilities with the highest number of customers in the U.S. in 2023. 

Largest utilities in the U.S.

The Baltimore-based company Constellation Energy Generation generated the most net electricity in the United States, followed by Florida Power & Light Co and the Tennessee Valley Authority. The newly formed Constellation Energy is now the largest operator of nuclear power plants in the United States. Tennessee Valley Authority was also ranked as one of the largest operators of nuclear power plants as of August 2024.