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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) 3.5 gigawatts of gas, coal, wind, and hydro generation along with 100 megawatts of energy storage.

Xcel Energy manages utilities serving 3.8 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.

CMS Energy is an energy holding company with three principal businesses. Its regulated utility, Consumers Energy, provides regulated natural gas service to 1.8 million customers and electric service to 1.9 million customers in Michigan. NorthStar Clean Energy, formerly CMS Enterprises, is engaged in wholesale power generation, including contracted renewable energy. CMS sold EnerBank in October 2021.

Southern is one of the largest utilities in the US. The company serves 9 million customers with vertically integrated electric utilities in three states and natural gas distribution utilities in four states. It owns 44 gigawatts of rate-regulated generating capacity, primarily for serving customers in Georgia, Alabama, and Mississippi. Subsidiary Southern Power owns 13 gigawatts of natural gas generation and renewable energy across the US and sells the electricity primarily under long-term contracts.