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Latest notices

Title Topics Posted
BPM change management: Proposed revision requests and updated BPMs posted as of 9/29/26 Legal and regulatory
Draft 2027-2029 Market Policy Roadmap published; meeting on 10/1/26, comments due 10/30/26 Markets, Operations, Information Technology, Governance and committees
Storage Design and Modeling: Comment deadline extended to 10/9/26 Markets
Western Energy Markets Regional Issues Forum meeting on 10/5/26: Agenda posted, registration requested Markets, Governance and committees
Training: Greenhouse Gas Enhancements overview on 9/29/26 Markets
Extended Day-Ahead Market Performance meeting rescheduled to 9/28/26 Markets
Resource Adequacy Modeling and Program Design meeting on 10/9/26 Markets
Storage Design and Modeling: Revised straw proposal posted, comments due 10/7/26 Markets
Maintenance scheduled for California ISO websites and reporting services on 9/22/26 and 9/29/26 Information Technology
Congestion Revenue Rights Enhancements meeting on 9/30/26 Markets
Registration Reminder: 2026 California ISO Stakeholder Symposium Legal and regulatory, Markets, Operations, Planning, Information Technology, Governance and committees
Business Practice Manual Change Management meeting on 9/22/26 Legal and regulatory
Joint Market Seams: Registration for 10/22/26 workshop now open Markets
WEM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: Updated 2026-2027 meeting schedule posted Governance and committees
Large Loads Initiative: Stakeholder meeting on 10/1/26; draft final proposal to be posted on 9/24/26 Legal and regulatory, Markets, Operations, Planning
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Latest news

Title Topics Posted
Extended Day-Ahead Market Expanded to include Portland General Electric Western Energy Markets, Markets, Extended Day-Ahead Market 10/01/2026, 8:55 AM
NV Energy signs agreement to join Extended Day-Ahead Market Western Energy Markets, Extended Day-Ahead Market 09/17/2026, 9:55 AM
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
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