Power outage warning issued as heat wave stresses US electric grids

The risk of power outages is expected to escalate across a broad swath of the US as intense heat tests electricity supplies

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 busi