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

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 ...

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

NEW YORK (Reuters) - U.S. nuclear power provider Constellation Energy on Friday agreed to buy privately-held natural gas and ...

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

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

The takeover will be a big deal in the US power industry and will significantly profit Calpine's shareholder who bought the ...

Constellation Energy Corp. shares surged to a record high after agreeing to acquire closely held Calpine Corp. for $16.4 ...

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 shares shot 25% higher today as the company confirmed its intentions to purchase Calpine. Calpine ...