Acquiring Company
Constellation Energy
Acquired Company
Calpine Corporation
BaltimoreUnited StatesEnergyOil And GasRenewable EnergyBiomass EnergyEnergyOil And GasRenewable EnergyDescription
Constellation Energy Corporation has received final regulatory clearance from the U.S. Department of Justice for its acquisition of Calpine Corporation. This approval allows Constellation to merge operations and enhance service capabilities while agreeing to divest certain assets as part of the deal. The acquisition is expected to create a stronger energy supplier with unprecedented scale and capability.
Who to call at Constellation Energy, and when
When Constellation Energy changes hands, the new owners review vendors, systems and leadership. That is when the door opens.
- An alert the day Constellation Energy raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
- Who you already know at Constellation Energy, from your own LinkedIn network
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Fundz sees it the moment Constellation Energy makes an acquisition, hires an exec or expands, usually minutes after it happens, and tells you who to reach.
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Frequently asked
Who acquired Calpine Corporation?
Calpine Corporation was acquired by Constellation Energy, based in Baltimore. The deal was reported on December 5, 2025. Constellation Energy is the country's largest operator of nuclear power plants and has been awarded a record $1 billion in contracts to supply nuclear power to the U.S. government over the next decade. Constellation Energy is publicly traded (CEG) and operates in Energy.
When did Constellation Energy acquire Calpine Corporation?
Constellation Energy's acquisition of Calpine Corporation was reported on December 5, 2025. Constellation Energy Corporation has received final regulatory clearance from the U.S. Department of Justice for its acquisition of Calpine Corporation. Fundz records the date the transaction was first publicly reported, sourced from filings and company announcements.
What does Calpine Corporation do?
Calpine Corporation is a leading U.S. power generation company and a business unit of Constellation (NASDAQ: CEG), operating America’s largest fleet of natural gas and geothermal power plants in competitive markets. It is privately held, operating in Energy, and is based in United States.
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