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

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

Baltimore-based Constellation, the nation’s largest operator of nuclear power plants, is acquiring Calpine Corp.

Constellation, based in Baltimore, has agreed to acquire Houston's Calpine Corp. in a deal that will create the nation's ...

In interesting timing, Friday's announcement came on the silver anniversary of the disastrous AOL/Time Warner merger.

Baltimore-based Constellation’s plans to acquire a Houston, Texas,-based natural gas  producer in a $26.6 billion deal will ...

Constellation Energy Corp. shares surged to a record high after agreeing to acquire closely held Calpine Corp. for $16.4 ...

NEW YORK (AP) — Constellation will acquire power company Calpine for $16.4 billion, linking two of the nation's biggest power companies.

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

Constellation is buying natural gas and geothermal power provider Calpine for $16.4 billion, joining together two of the ...

New York, Pennsylvania and Virginia. The buyout will also create the Constellation will buy Calpine with 50 million of its shares and $4.5 billion in cash. It will also assume about $12.7 billion ...