Compare stocks

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.

Constellation Energy spun off from Exelon in 2022 and is now the largest US independent power producer. After acquiring Calpine in 2026, Constellation owns 55 gigawatts of power generation capacity. Constellation is the largest nuclear plant owner in the US with 22 GW of nuclear power generation capacity in six states. It also owns 4 GW of renewable energy projects. Constellation's retail energy business serves 2.5 million customers.