The company is betting that data-center owners will be hungry for all sorts of power—from nuclear to conventional.

Constellation Energy agreed to buy Calpine for $16.4 billion, combining two of the country’s largest electricity generators ...

Constellation is buying power natural gas and geothermal power provider Calpine in a cash-and-stock deal valued at ...

Constellation Energy Corp., an electricity provider whose stock has doubled over the last year on hopes it will help meet the ...

Baltimore-based Constellation, the nation’s largest operator of nuclear power plants, is acquiring Calpine Corp.

Constellation Energy is nearing a roughly $30 billion deal to acquire power producer Calpine, people familiar with the matter ...

Baltimore's Constellation Energy buying Calpine in a deal that joins two huge U.S. power companies George W. Bush gave fellow ...

Separately, Calpine and Constellation are already among the largest power generation companies in the country.

Constellation says that after merging with Calpine, it will be the biggest electric utility in America, with 2.5 million ...

Constellation Energy announces acquisition of Calpine, creating America's largest clean energy provider.

Constellation Energy struck a $26.6 billion deal to buy Calpine, uniting two of the U.S.'s largest power generators amid ...

Constellation Energy Corp. is nearing an acquisition of Calpine Corp., people familiar with the matter said, in what would be ...