On Tuesday, May 20, 2025, power system conditions allowing, ISO New England will update the EMS/Market power system model. The update is scheduled to start at approximately 13:20 and last until approximately 15:45. Participants can expect a loss of 5-minute Real Time LMP and RCP postings to the ISO's web site and stale DDP signals to their Electronic Dispatch RTUs during this time period. Updated DDPs will resume upon completion of the EMS outage at approximately 15:45. External market applications will remain open during the outage
