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Latest notices

Title Topics Posted
Demand and Distributed Energy Market Integration meeting on 8/27/26 canceled Markets
WEM Governing Body, Joint, ISO Board of Governors, and Committee meetings on 8/25/26-8/27/26; draft agendas posted Governance and committees
Business Practice Manual Change Management call on 8/25/26 Legal and regulatory
Congestion Revenue Rights Customer Partnership Group meeting on 8/25/26 Markets
Maintenance scheduled for California ISO websites and reporting services on 8/18/26 and 8/25/26 Information Technology
Demand and Distributed Energy Market Integration meeting on 8/27/26, comments due 9/4/26 Markets
Intertie Schedule Modeling Enhancements Initiative workshop on 8/24/26 Markets
Follow-up: Extended Day-Ahead Market Congestion Revenue Allocation Phase 2 Working Group meeting on 8/20/26 Markets
Consolidation of Technical User Group and Release User Group meetings Markets, Information Technology
Reminder: Registration for Joint Market Seams workshop on 8/18/26; agenda posted Markets
New leadership selected for the Western Energy Markets Regional Issues Forum; Tricia Blevins selected as new Western Energy Imbalance Market sector liaison Markets, Governance and committees
Variable Operations and Maintenance Cost Review: Final proposal and draft tariff posted, meeting on 8/20/26 Legal and regulatory, Markets
Extended Day-Ahead Market Congestion Revenue Allocation Phase 2 Working Group meeting on 8/13/26 Markets
Reminder: Registration for Market Seams workshop on 8/18/26 Markets
BPM change management: Proposed revision requests and updated BPMs posted as of 8/4/26
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Latest news

Title Topics Posted
BHE Montana becomes eighth utility to commit to the Extended Day-Ahead Market Western Energy Markets, Markets, Extended Day-Ahead Market 08/10/2026, 9:55 AM
Western Energy Markets Quarterly Benefits Report debuts with first Extended Day-Ahead Market results Western Energy Markets, Extended Day-Ahead Market 07/30/2026, 9:00 AM
Anita Decker reappointed to Western Energy Markets Governing Body Western Energy Markets 06/17/2026, 1:45 AM
ISO Board of Governors approves 2025-2026 transmission plan Transmission 05/19/2026, 12:15 AM
Black Hills Corp.’s South Dakota and Wyoming electric utility subsidiaries join Western Energy Imbalance Market Western Energy Markets 05/06/2026, 12:15 AM
BHE Montana joins the Western Energy Imbalance Market Western Energy Markets 05/06/2026, 12:00 AM
EDAM is live: PacifiCorp and CAISO successfully launch new market May 1 Western Energy Markets 05/01/2026, 12:15 AM
Two new Market Surveillance Committee members appointed; ISO Board of Governors also names new vice chair Leadership 04/30/2026, 12:00 AM
Western Energy Imbalance Market Continues to Deliver with Over $8.6 Billion in Total Benefits to Date Western Energy Markets 04/28/2026, 12:00 AM
Joint Virtual Press Conference: Launch of the Extended Day-Ahead Market (EDAM) Western Energy Markets 04/13/2026, 12:00 AM
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