Senior Vice President, Fuels, Constellation
As senior vice president, Fuels for Constellation, Hessen leads Constellation’s fuels, environmental, emissions, and production businesses.
Previously, Hessen was vice president and managing director, Generation Development for Exelon Generation where he led the successful origination and development of more than $3 billion of new power assets, representing more than 2.8 gigawatts of new combined cycle gas, peaking gas, wind, and storage power capacity. He was also responsible for Exelon Nuclear Partners, which offers nuclear operating and management services to improve nuclear performance and safety and JExel Nuclear, Exelon’s joint venture with the Japan Atomic Power Company. Additionally, he led the opening of Exelon and Constellation’s London office, and the investment in and development of NetPower, for which he served on the board of directors.
Prior to joining Exelon, Hessen worked for one of the nation’s largest integrated gas and electric utilities, serving in multiple leadership positions including: general manager, nuclear engineering; director, new fossil generating station construction and integration; director, nuclear asset integration; director, information technology operations and strategy; director, utility innovations; and vice president, corporate strategy and business services.
Hessen is a member of the board of directors of the Saint Ignatius Loyola Academy in Baltimore. Previously, he was a member of the board of directors of the Young Women’s Leadership Charter School of Chicago, president of the board of directors of The Rise School of Denver and a member of the board of advisors of the University of Wisconsin, College of Engineering.
Hessen holds a Master of Business Administration in Finance from the University of San Francisco and a Bachelor of Science in Civil Engineering from Marquette University. Hessen has held professional Engineering licenses in seven states.