Baltimore-based Constellation Energy, the nation’s largest operator of nuclear power plants, is acquiring Calpine Corp. in a cash and stock transaction valued at $16.4 billion, the company ...

Calpine was taken private in 2017 by buyout firm Energy Capital Partners, Canadian pension fund CPP Investments and Access Industries for a total of $17 billion, including debt. Both Constellation ...

Constellation’s Calvert Cliffs nuclear plant on the Chesapeake Bay in Lusby, Maryland. The US electricity system is grappling with a historic rise in power demand after two decades of negligible ...