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

Texas' surging growth in power demand was a big driver in the $26.6 billion deal to acquire Houston's largest private company ...

Constellation Energy Group Inc. has agreed to buy a Texas company in a deal worth more than $26 billion that will create one ...

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

Constellation Energy shares could remain in focus on Monday after surging more than 25% Friday as the energy giant announced ...

Baltimore-based energy company Constellation’s plans to acquire a Houston, Texas-based natural gas producer in a $26.6 billion deal will boost the nation’s biggest energy firm right as the U.S. faces ...

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

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

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

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

Baltimore-based Constellation Energy Corp. will acquire Houston-based energy company Calpine Corp. in a deal worth $16.4 ...