Experts Warn Winter Storm Fern Could Be “Catastrophic” — These 12 Cities Are in the Crosshairs

13 states and D.C. are under a federal power grid emergency. The Department of Energy is letting plants run past their pollution limits to keep the lights on. Here’s what it means for you

The Department of Energy has issued an emergency order for PJM Interconnection, the largest grid operator in the US, as unusually hot weather strains…