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.

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

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

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 ...

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

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 ...