Employees
~10,235
About Constellation
Key Facts
Approximately 10,235 employees globally
Headquartered in Baltimore, Maryland, United States
Operates in Utilities
Executive Leadership Team
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Constellation Executive Leadership Team
Bryan Hanson
Executive Vice President, Chief Generation Officer
Energy professional more than 30 years of progressive experience in the nuclear power industry. Currently responsible for the safe, efficient and reliable operation of Constellation’s power generation fleet, which includes nearly 100 generating units in 19 states and Canada. Constellation operates the largest clean energy fleet in America, producing electricity from 10 fuel types including nuclear, natural gas, hydro, wind and solar. He serves on the Constellation Executive Committee, which sets strategy and direction for the company.
Since 2022
Celinez Nunez
Managing Director, Corporate Security
Provide strategic leadership for enterprise corporate security, overseeing programs that safeguard personnel, critical energy infrastructure, and business operations across one of the nation's largest clean energy producers. Collaborate with operational and corporate leaders to enhance security, resilience, and risk management in an evolving threat environment.
Since 2026