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

Constellation is buying power natural gas and geothermal power provider Calpine in a cash-and-stock deal valued at approximately $16.4 billion, joining together two of the country’s biggest power comp

U.S. nuclear power provider Constellation Energy on Friday agreed to buy privately-held natural gas and geothermal company Calpine Corp for $16.4 billion, marking one of the biggest acquisitions in the history of the U.

Constellation Energy Corp. shares surged to a record high after agreeing to acquire closely held Calpine Corp. for $16.4 billion in a deal that will create the largest fleet of US power stations.Most

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

Electricity provider Constellation Energy is in talks to buy privately held Calpine Power for around $30 billion, according to a Bloomberg report on Wednesday. The news sent shares of Constellation down 6% in midday trading.

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

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

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.Most Read from BloombergNYC’s Subway Violence Deters Drive to Bring Workers Back to OfficeDutch Central Bank Restores Amsterdam’s ‘Ugliest Building’NYC Condo Owners May Bear Costs of Landmark Green Building LawCan American Drivers Learn to Love Roundabouts?

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

Constellation Energy Corp. shares surged to a record high after agreeing to acquire closely held Calpine Corp. for $16.4 billion in a deal that will create the largest fleet of US power stations.

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 ...