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Portland General Electric is a regulated electric utility providing generation, transmission, and distribution services in a service territory that includes about half of all Oregon residents and two-thirds of the state's business activity. The company owns (wholly or through joint ventures) 3.6 gigawatts of gas, coal, wind, and hydro generation, along with 300 megawatts of energy storage. In February 2026, PGE proposed acquiring utilities in Washington state from Berkshire Hathaway Energy.

Alliant Energy is the parent of two regulated utilities, Interstate Power and Light and Wisconsin Power and Light. Together, IPL and WPL serve nearly 1 million electric customers and 425,000 natural gas-only customers. Both subsidiaries engage in the generation and distribution of electricity and the distribution and transportation of natural gas. Alliant also owns a 16% interest in American Transmission.

Based in Richmond, Virginia, Dominion Energy is an integrated energy company with over 31 gigawatts of electric generation capacity and more than 91,000 miles of electric transmission and distribution lines. Dominion is constructing a rate-regulated 5.2 GW wind farm off the Virginia Beach coast.

Xcel Energy manages utilities serving 3.9 million electric customers and 2.2 million natural gas customers in eight states. Its utilities are Northern States Power, which serves customers in Minnesota, North Dakota, South Dakota, Wisconsin, and Michigan; Public Service Company of Colorado; and Southwestern Public Service Company, which serves customers in Texas and New Mexico. It is one of the largest renewable energy suppliers in the US, with more than half of its electricity sales coming from carbon-free energy.