Constellation Energy owns and operates the largest fleet of nuclear power plants in the United States, along with natural gas, hydroelectric and renewable generation, selling electricity into wholesale power markets and through retail contracts to businesses and utilities. Nuclear plants provide steady, always-on power output that doesn't depend on weather or time of day the way solar and wind do, a characteristic that has become increasingly valuable as data centers seek reliable, round-the-clock electricity for AI computing. The company was spun off from Exelon to separate its competitive power generation business from Exelon's regulated utility operations, giving Constellation more direct exposure to swings in wholesale electricity prices. Long-term power supply agreements with large technology companies looking to secure reliable electricity for data centers have become an increasingly important part of Constellation's growth story.