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, giving it a combined generating capacity of 55 gigawatts following its combination with Calpine. The output of that portfolio is equivalent to powering 27 million homes.
The company sells electricity and natural gas through two channels: a commercial energy business serving commercial customers and a retail energy business serving retail customers. Both draw on the same generation base, which spans several distinct technical domains - nuclear and natural-gas power generation, geothermal, hydro, wind and solar - alongside work on grid reliability and clean-energy innovation. Technical staff are also involved in nuclear preservation and licence renewal, an area where long asset lifetimes make sustained engineering capability essential.
Constellation is an active participant in energy policy and describes its mission as moving towards a cleaner, more secure energy future while supplying dependable power for a growing economy. Its stated priorities include lower-carbon generation, clean-energy innovation and support for grid reliability.
