U.S. electricity providers by type 2018

Municipal utilities are the most common type of electricity provider in the United States. In 2018, there were approximately 830 municipal utilities and 806 cooperative utilities in the United States.

Who owns utilities?

Although U.S. municipalities operate a number of utilities, large investor-owned utilities (IOUs) serve a larger base of customers per company, as well as the majority of customers in the United States. IOUs are the main utility provider in dense and highly populated areas on both the East and West Coasts. The two largest IOUs, Southern California Edison and Pacific Gas and Electric Company (PG&E), are both based in California and have among the highest number of residential customers of any electric utility company in the United States.

Largest utilities in the U.S.

The Chicago-based company, Exelon, generates the most net electricity in the United States, followed by the Tennessee Valley Authority and Florida Power & Light Co. The majority of Exelon’s electricity comes from nuclear power, making the company 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 June 2019.

Number of U.S. electricity providers in 2018, by ownership type

Number of utilities
Retail power marketer260
Investor owned168
Political subdivision104
Wholesale power marketer33
Community choice aggregator19
Municipal marketing authority15
Behind the meter14
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Release date

October 2019


United States

Survey time period


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Statistics on "Electricity in the United States"

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