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

Constellation is buying natural gas and geothermal power provider Calpine for $16.4 billion, joining together two of the country’s biggest power companies. The acquisition would create the ...

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

Constellation Energy’s deal to buy Calpine is being driven by fast-rising demand for electricity in part by the technology ...

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