Constellation Energy’s deal to buy Calpine is being driven by fast-rising demand for electricity by the technology industry.

Constellation said it's already the top clean energy producer in the U.S., and buying Calpine gives it the Geysers facility in Northern California, which is the largest geothermal generator in the U.S ...

Constellation is currently in talks with Calpine’s private equity owners, which include an affiliate of Energy Capital ...

Constellation and Calpine Corp. today announced they have entered into a definitive agreement under which Constellation will acquire Calpine in a cash and stock transaction valued at an equity ...