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

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

The group was calling for the reduction of coal-fired power plants and to limit permits for the mining of coal. (AFP Photo) Although fossil fuels are the single biggest source of greenhouse gas (GHG) ...