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Latest notices

Title Topics Posted
Settlements Refresher Training on 4/21/26: DAME, EDAM and EDAM CAISO Balancing Authority Participation Rules Markets
BPM Change Management Proposed Revision Requests and Updated BPMs as of 3/31/26
Business Practice Manual revision update: Withdrawal of proposed revision requests 1656, 1658, and 1659 Legal and regulatory
BPM change management: Proposed revision requests and updated BPMs posted as of 3/31/26 Legal and regulatory
2026 Market Policy Catalog and Roadmap Process: prioritization workshop on 4/8/26 Legal and regulatory, Markets, Operations, Planning, Information Technology
WEM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: updated 2026 meeting schedule posted Governance and committees
Extended Day-Ahead Market Congestion Revenue Allocation Phase 2: Working group call on 4/17/26; draft schedule released Markets
Storage Design and Modeling: Additional Headroom Limit examples posted, comment deadline extended to 4/3/26 Markets
Annual Summer Available Transfer Capability Assessment meeting on 3/31/26 Markets
New Stakeholder Process: Commitment Cost Bidding Flexibility workshop on 3/26/26 Markets
Day-Ahead Market Enhancements: Configurable Parameters Implementation working group meeting on 3/24/26 Markets
Business Practice Manual Change Management calls on 2/24/26 - 2/26/26 Legal and regulatory
Financial Planning Initiatives (including Start-up Funding for the Regional Organization for Western Energy): Draft final proposal posted; call on 3/19/26 Legal and regulatory, Markets, Operations
Scheduling Infrastructure and Business Rules Advanced Bid Submission and Validation Training on 3/19/26 Markets
Intertie Schedule Modeling Evolution on CAISO Interties: Workshop on 3/18/26 Markets
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Latest news

Title Topics Posted
Western Energy Imbalance Market Surpasses $8 Billion in Total Benefits Since Inception Western Energy Markets 02/13/2026, 12:00 AM
CAISO submits first Assembly Bill 825 report to Legislature and Governor Western Energy Markets 02/02/2026, 11:20 AM
Western Energy Imbalance Market Surpasses $7.82 Billion in Total Benefits Western Energy Markets 10/30/2025, 10:45 AM
WEIM Posts Strong Q2, Surpassing $7.4 Billion in Total Benefits Western Energy Markets 07/31/2025, 12:00 AM
WEM Governing Body approves important market reliability feature Western Energy Markets 07/23/2025, 1:20 PM
Public Service Company of New Mexico commits to join the Extended Day-Ahead Market Western Energy Markets 07/01/2025, 9:25 AM
Deborah Smith, former Seattle City Light CEO, added to Western Energy Markets Governing Body Western Energy Markets 06/18/2025, 3:17 PM
Imperial Irrigation District to join both ISO-operated electricity markets Western Energy Markets 05/27/2025, 10:00 AM
ISO Board of Governors approves 2024-2025 transmission plan Transmission 05/22/2025, 12:00 AM
Turlock Irrigation District commits to joining Extended Day-Ahead Market Western Energy Markets 05/19/2025, 9:59 AM
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