Which US Utility Has the Highest Generation Capacity?



Top utilities and their generation capacities

Duke Energy (DUK) has the largest power generation capacity among all the investor-owned utilities, leading with more than 52 gigawatts of generation capacity. NextEra Energy (NEE) and Southern Company (SO) have nearly 45 gigawatts of generation capacity.

Utilities net gen capacity

Generation capacity is the maximum power output a generator can produce under precise conditions. The chart above shows the generation capacity levels of the leading investor-owned utilities by market capitalization.

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