Constellation Energy, Calpine

Competitive generation giant Constellation has agreed to acquire Calpine Corp. in a $16.4 billion deal that is set to create ...
Constellation is buying power natural gas and geothermal power provider Calpine in a cash-and-stock deal valued at ...
Separately, Calpine and Constellation are already among the largest power generation companies in the country.
The deal becomes one of the biggest in the history of power generation at a time when demand for electricity has exploded.