Constellation Energy

Constellation Energy is the largest producer of clean, low-carbon and reliable energy in the United States and the largest private-sector power producer in the world. Headquartered in Baltimore, Maryland, the company operates an integrated portfolio of nuclear, natural gas, geothermal, hydroelectric, wind and solar facilities, with generating capacity of 55 gigawatts following its combination with Calpine - output equivalent to the consumption of some 27 million homes.

Beyond generation, Constellation supplies electricity and natural gas to commercial and retail customers across the United States. Its technical work spans nuclear energy, natural gas power generation, geothermal, hydroelectric, wind and solar, alongside grid reliability, clean-energy innovation and nuclear license renewal and preservation. The company also engages in energy public policy.

Constellation describes its mission as delivering dependable energy for a growing economy, with stated commitments to a cleaner, more secure energy future, the preservation of existing nuclear capacity and the development of lower-carbon power. Its work sits at the intersection of power engineering, nuclear operations, grid management and energy markets.