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Constellation Announces Senior Leadership Changes Ahead of Calpine Deal Closing
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Constellation announced a series of senior leadership appointments as the company prepares to complete its transaction with Calpine.
The leadership changes take effect upon completion of Constellation’s deal with Calpine, which Constellation said is expected to close in the fourth quarter of 2025, subject to clearance by the Department of Justice and other customary closing conditions.
Kathleen Barrón, Executive Vice President and Chief Strategy and Growth Officer at Constellation, has announced that she will retire after 30 years in the energy industry. Because of her unique role, Barrón’s responsibilities at Constellation will be divided among other senior leaders upon closing of the Calpine transaction. Barrón has agreed to remain on the Constellation senior leadership team as an advisor to the CEO through the first half of 2026 to ensure a seamless transition, Constellation said
Dan Eggers, Executive Vice President and Chief Financial Officer, has been promoted to Senior Executive Vice President, Finance and Data Economy, reporting to Joe Dominguez, President and CEO of Constellation. In his new role, Eggers will expand his Finance responsibilities to lead Constellation’s Data Economy business.
Shane Smith, Senior Vice President, Treasury and Credit, has been promoted to Executive Vice President and Chief Financial Officer, reporting to Eggers.
David Dardis, Executive Vice President and Chief Legal and Policy Officer, was promoted to Senior Executive Vice President, Chief External Affairs and Growth Officer, reporting to Dominguez. In his new role, Dardis will lead the company’s new generation development business and grow his remit to include Legal, Policy, Sustainability, Strategy, Corporate Affairs and Public Advocacy.
Bryan Hanson, Executive Vice President and Chief Generation Officer, and Jim McHugh, Executive Vice President and Chief Commercial Officer, also were promoted to senior executive vice presidents due to their expanded responsibilities. As Chief Commercial Officer, McHugh is responsible for Constellation's wholesale and retail business units
Andrew Novotny, President and Chief Executive Officer of Calpine, will join Constellation and become Senior Executive Vice President, Constellation Power Operations, in addition to President and CEO of Calpine, and will continue to lead the Calpine business plus Constellation’s fleet of natural gas, hydro, solar and wind generation, reporting to Dominguez.
Several other Calpine senior executives will join the Constellation leadership team as well, Constellation said. Constellation did not disclose these specific individuals
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November 21, 2025
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Reporting by Paul Ring • ring@energychoicematters.com
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