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

U.S. nuclear power provider Constellation Energy on Friday agreed to buy privately held natural gas and geothermal company ...

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

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

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

Constellation Energy shares surged Friday after the company agreed to buy private energy company Calpine in a 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 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’s deal to buy Calpine is being driven by fast-rising demand for electricity in part by the technology ...

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

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