Philadelphia, P.A. — PJM Interconnection, the regional electric grid operator for 13 states including Pennsylvania, announced the results of its capacity auction yesterday. The auction ensures that the region has enough electric generating capacity to keep the lights on in 2021. These results confirm that PJM is continuing a trend of procuring much more generating capacity than is needed for the region. As of now, it exceeds the amount necessary by almost 6 percent, which equates to over 9,300 extra megawatts of excess power, or about 10 large power plants that are unnecessary. This extra capacity artificially adds about $530 million in costs for consumers with little reliability benefit.