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

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

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

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

Constellation is buying power natural gas and geothermal power provider Calpine for $16.4 billion, joining together two of ...

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

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

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

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

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

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

Constellation Energy, already the biggest US nuclear plant operator, also will become the largest independent power provider in the US after agreeing to buy Calpine, sending shares up 25%.