Together, these six subsidiaries provide power to roughly 10 million customers across nine states.Įxelon Corporation is a Pennsylvania company that resulted from the merger of PECO. These companies include Commonwealth Edison, Baltimore Gas, and Electric, Potomac Electric Power Company, Delmarva Power and Light, PECO Energy, and Atlantic City Electric. In addition, Exelon serves as a parent company to six electricity providers. Exelon Corporation – Market Cap: $55.4B The Exelon Corporation and its subsidiaries, supply power to roughly 10 million customers across the US.Įxelon Corporation is another major US electricity provider via its subsidiary brands.

PacifiCorp is a subsidiary of Berkshire Hathaway Energy, which owns several other energy companies. The other subsidiary is Rock Mountain Power which provides power in Idaho, Utah, and Wyoming. PacifiCorp splits its utility services between two subsidiaries, Pacific Power which covers services in California, Oregon, and Washington. Despite its position on this list, it is one of the largest utilities in the United States, providing power to nearly 2 million customers. The PacifiCorp headquarters is in Portland, Oregon, at the Loyd Center Tower. Despite coming in last on the list of largest electric companies, PacifiCorp is a major power supplier in the United States. PacifiCorp, better known as Pacific Power and Light, supplies electricity to the west coast and parts of the midwest. PacifiCorp – Market Cap: $55B The American electric power company PacifiCorp, supply electricity to large parts of the US. Keep in mind that some of these companies have other business segments outside of energy (such as gas or telecommunications) that could skew the results. These rankings are based on each company’s market cap on January 7, 2022. There are many ways to define the largest electricity companies, such as the number of customers served or the geographical area covered.īut the best way to put their size in perspective is by ranking by market cap. Power is essential to our everyday lives, but you may not know that much of the world’s power is created and delivered by only a few companies. The second largest is Duke Energy, at 80 billion.The largest electric company in the world is NextEra Energy, at 169 billion.An electric utility is a company in the electric power industry (often a public utility) that engages in electricity generation and distribution.

Largest electric utilities