David Ellsworth

Chief Operating Officer and Senior Vice President, Constellation

David Ellsworth, Chief Operating Officer; Senior Vice President, Constellation

As senior vice president and chief operating officer – retail, David Ellsworth is responsible for the company’s business operations, pricing and product management, strategic and portfolio analytics and Constellation’s commodity management group.

Professional History

Ellsworth joined the Exelon Power Team in February, 2004 as vice president of fuels, working with both the Power Team and Exelon Power organizations to optimize the fuels purchasing, marketing and trading operations. 

Ellsworth has had full careers in both the regulated and merchant energy arenas of the electric utility business; he spent 10 years with the Potomac Electric Power Company (PEPCO) as a unit engineer, an energy planning specialist and a power plant project manager. In 1993, he moved to PG&E National Energy Group. There, he started in the power plant construction and controls areas, and then moved into marketing, power scheduling and asset management. By 1999, he was VP of PG&E National Energy Group’s trading and operations group. In that role, Ellsworth developed and directed the company’s fuel and asset management, strategic bidding, coal scheduling, power and gas operations activities for an 8,500-megawatt (MW) portfolio, in addition to other duties.


Ellsworth received his bachelor’s degree in mechanical engineering from the University of Delaware and his master’s of business administration from George Mason University.