During a summer marked by intense heatwaves and extreme weather driven by climate change, Constellation’s carbon-free clean energy centers operated at nearly full capacity to meet energy demands. The company’s 21 nuclear reactors across 12 sites in the Midwest, Mid-Atlantic, and Northeast achieved a 98.1% capacity factor in June, July, and August, supplying reliable power to nearly 15 million homes and businesses.
Constellation’s technical teams prepared for the summer heat by completing tens of thousands of tasks during spring refueling and maintenance outages. These efforts included technology upgrades, equipment refurbishments, testing electrical systems, and loading new fuel, ensuring uninterrupted performance during peak demand. As fall begins, the company has already initiated maintenance plans to prepare for increased winter energy needs.
“As extreme weather events and heatwaves become more frequent, Constellation’s clean energy centers are crucial for delivering reliable, carbon-free power,” said Bryan Hanson, executive vice president and chief generation officer. “Our nuclear experts are now preparing for winter to ensure continued reliability during colder months.”
Constellation’s nuclear fleet includes plants in Maryland (Calvert Cliffs), Pennsylvania (Limerick and Peach Bottom), New York (Fitzpatrick, Nine Mile Point, and Ginna), and Illinois (Braidwood, Byron, Clinton, Dresden, LaSalle, and Quad Cities). These facilities play a vital role in supplying affordable, carbon-free energy across the U.S.
