Constellation Energy shares shot 25% higher today as the company confirmed its intentions to purchase Calpine. Calpine ...

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.

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

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

Constellation Energy agreed to buy Calpine for $16.4 billion, combining two of the country’s largest electricity generators ...

The company is betting that data-center owners will be hungry for all sorts of power—from nuclear to conventional.

Constellation Energy jumped Friday after announcing that it will buy Calpine, adding geothermal and more natural gas to its ...

The $16.4 billion purchase agreement would combine the biggest U.S. nuclear operator with Calpine’s natural gas assets.

Competitive generation giant Constellation has agreed to acquire Calpine Corp. in a $16.4 billion deal that is set to create ...

Constellation Energy, already the biggest US nuclear plant operator, also will become the largest independent power provider in the US after agreeing to buy Calpine, sending shares up 25%.

Based in Baltimore, Constellation is a provider of clean energy and a supplier of energy products and services to businesses, ...