On June 20, 2025, FERC approved Southwest Power Pool, Inc.’s (SPP) revisions to its Western Energy Imbalance Service (WEIS) tariff to allow a participating balancing authority to initiate a market hold due to reliability concerns and to specify how SPP will settle the market in the event of such a market hold. FERC found that the revisions will allow participating balancing authorities to timely respond to reliability-based events while avoiding disruptions to the WEIS market.