Including the assumption of debt, Constellation on Friday valued the cash-and-stock deal for the privately held Calpine at $26.6 billion.

Constellation Energy Corp. is nearing an acquisition of Calpine Corp., people familiar with the matter said, in what would be one of the biggest ever deals in the power generation sector.

Calpine, the largest private company in Houston, announced a deal to be acquired by Baltimore-based Constellation for approximately $16.4 billion Friday morning. Constellation would buy Calpine ...

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 nation ...

CEG set to pay mostly in stock, absorb $12 bln Calpine debt Deal talks advanced, could come as soon as Monday Would be largest U.S. power M&A deal since 2007 Calpine gas plants complement CEG's ...

Constellation Energy CEG0.36%increase; green up pointing triangle agreed to buy Calpine for $16.4 billion, combining two of the country’s largest electricity generators at a time when their ...