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 ...

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 ...