Largest electric utilities in the U.S. 2020, by number of customers

Florida Power and Light Company has the highest number of customers of any leading electric utility in the United States. It served approximately 5.14 million customers in 2020. Southern California Edison Company came in second. Florida Power and Light is a subsidiary of NextEra Energy, the largest energy holding company and considered one of the new energy majors due to its great investments in renewable energy. NextEra Energy has one of the highest customer satisfaction scores of investor-owned utilities in the U.S.

Utility ownership

Around 40 percent half of electricity providers in the United States are publicly-owned, and roughly one third are considered cooperatives. Although municipal and cooperative utilities greatly outnumber investor-owned utilities (IOUs) in the U.S., IOUs serve the highest number of customers. This is because municipal and cooperative utilities are much smaller and locally-based, generally operating not for profit and without commercial incentive to expand.

Largest companies and revenue

Southern California Edison and Florida Power and Light are also the two largest IOUs in the U.S., and generated some of the highest commercial revenue among leading electric utilities in 2019. While Virginia Electric and Power had a lower number of customers, it ranked highly for commercial revenue, above many larger companies.