The big news story this summer in PJM has been the auction that set the price for capacity for the period of June 2022 through May 2023. This is newsworthy because there has not been a PJM capacity auction in three years. The delay had been caused by disagreements between the Federal Energy Regulatory Commission (FERC) and PJM, which were at odds over the mechanism by which the price for capacity is set. This three-year delay created uncertainty in how capacity was valued in any forward electricity contract. And like any other security or commodity, uncertainty creates risk premiums and higher costs. Before examining the details of the most recent auction results, it is important to review capacity and why it is important to electricity buyers.