Maintenance Scheduled for California ISO Websites and Reporting Services

The California ISO will perform monthly scheduled maintenance on April 29, 2025, from 7 p.m. - 10:30 p.m. Pacific Time on its websites and reporting services. The websites include Western Energy Imbalance Market website, ISO Today (mobile app), Business Practice Manual (BPM) Change Management System, Developer Portal, Market Participant Portal (MPP), Western EIM Portal, and RC West Portal. The reporting services include credit management reports, MasterFile reports, Resource Interconnection Management System (RIMS) reports, Scheduling Infrastructure Business Rules (SIBR) reports and Transmission Register. These sites and reports may be temporarily unavailable during the maintenance. See the most up-to-date ISO Production Maintenance and Outages Schedule for more details.