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

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

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

Constellation Energy shares surged Friday after the company agreed to buy private energy company Calpine in a deal valued at ...

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

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

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

Constellation Energy jumped Friday after announcing that it will buy Calpine, adding geothermal and more natural gas to its ...

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