On July 2, 2026, the Federal Energy Regulatory Commission (FERC or Commission) denied a waiver request filed by Chestnut Run Energy LLC (Chestnut Run) seeking a one-time limited waiver of certain requirements under PJM Interconnection, L.L.C.’s (PJM) Open Access Transmission Tariff (Tariff) to allow Chestnut Run to implement an equipment change to its proposed combined cycle gas turbine electric generating facility’s (Facility) configuration.  Chestnut Run sought waiver because of availability issues with certain equipment outlined in its interconnection application.  In denying the request, FERC found Chestnut Run did not demonstrate that the requested waiver would not result in undesirable consequences and noted that the requested waiver would undermine the expeditious nature of PJM’s Reliability Resource Initiative (RRI) process.