Constellation Energy Corporation is a Fortune 500 competitive energy supplier and the largest producer of carbon-free energy in the United States. Through its retail business, Constellation sells electricity, natural gas, and energy management services to more than 2 million residential, small business, and commercial/industrial customers in deregulated markets across 17+ states and the District of Columbia, including Texas, Illinois, Pennsylvania, Ohio, Maryland, New York, and New Jersey. The company counts 75% of the Fortune 100 among its customers and is also a major supplier of renewable energy certificates and carbon-free 24/7 matched power for corporate sustainability programs.
For HVAC contractors, Constellation is primarily a supplier of the electricity and natural gas that powers their own shops, warehouses, and service centers, rather than a tool sold to homeowners. Contractors with operations in deregulated states use Constellation to lock in fixed-rate electricity or gas contracts for one to five years, smoothing out energy cost volatility on their own P&L. Larger multi-location contractors also use Constellation's energy management services (efficiency projects, sustainability consulting, and on-site generation) to tighten utility spend across multiple warehouse, office, and training facilities. Constellation additionally operates a home services arm in select markets that sells HVAC installation, repair, and maintenance plans directly to consumers, which means in a small number of geographies it also competes with local HVAC contractors at the residential level.
Constellation Energy is headquartered in Baltimore, Maryland, and was spun off from Exelon Corporation as an independent public company in February 2022. It trades on the Nasdaq under CEG and operates a nuclear, wind, solar, and hydro generation fleet that underpins its carbon-free power offerings.