US energy department warns of potential for outages in PJM Interconnection, serving 67 million from DC to Chicago The risk of power outages is expected to escalate across a broad swath of the United States on Wednesday as intense heat will test the capacity of electricity supplies serving millions of homes and businesses from the midwest through the mid-Atlantic. The US Department of Energy warned of the potential for heightened blackout risks in the PJM Interconnection, the largest US electric grid, which serves 67 million people in a territory stretching from Washington DC to Chicago. Continue reading...