Governing Body
The Western Energy Imbalance Market (WEIM) and Extended Day-Ahead Market (EDAM) is governed by a five member body with shared authority from the ISO Board of Governors on rules specific to participation to the WEIM and EDAM.
Designed by regional stakeholders, the governing body is nominated by a committee of western stakeholders. These members bring a high level of professionalism and leadership, with work experience in public power, investor-owned utilities, and as state regulators.
Members
WEM Governing Body market expert
Foundational and policy documents
Upcoming events
For connectivity issues, call AT&T at 1-888-793-6118 then press *0 for assistance.
Public comments may be provided to the ISO Board of Governors and/or the WEM Governing Body both orally during noticed meetings, and in writing. Oral comments for matters not on the agenda are addressed at the beginning of meetings, while those on agenda items are addressed when the item is presented. Written comments are publicly posted and should be sent at least one week prior to meetings to allow enough time for review by the Board and/or the Governing Body. Comment letters should be sent to sbernard@caiso.com and kosborne@caiso.com.
Market expert opinions and briefings
Contact
For information on or assistance with the Governing Body, please contact:
Kristina Osborne
kosborne@caiso.com
Holly Taylor
htaylor@caiso.comMeeting documents (last 12 months)
All meeting documentsWEM Governing Body Executive Session
Related documents
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Final Agenda - WEM Governing Body Executive Session - May 07, 202604/30/2026, 5:55 PM
Joint ISO Board of Governors and WEM Governing Body General Session
Related documents
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Video - Joint ISO Board of Governors and WEM Governing Body General Session - Apr 29, 202604/30/2026, 4:04 PM
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Final Agenda - WEM Governing Body - Apr 28-29, 202604/24/2026, 8:21 AM
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Final Agenda - ISO Board of Governors Meeting - Apr 29-30, 202604/24/2026, 8:22 AM
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1) Public comment
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4) Market Surveillance Committee appointments
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Decision on Market Surveillance Committee Appointments - Memo - Apr 202604/22/2026, 5:21 PM
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Decision on Market Surveillance Committee Member Appointments - Motion - Apr 202604/30/2026, 10:51 AM
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5) Formation Committee update (West-Wide Governance Pathways initiative) - Materials to be posted
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Formation Committee Update - Apr 202604/22/2026, 7:38 PM
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6) Briefing on day-ahead market enhancements configurable parameters
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Briefing on Day-Ahead Market Enhancements Configurable Parameters - Apr 202604/22/2026, 12:33 PM
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7) Briefing on market performance
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Briefing on Market Performance - Apr 202604/22/2026, 12:33 PM
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8) Informational reports
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Department of Market Monitoring Update - April 202604/22/2026, 12:34 PM
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Market Surveillance Committee Update - Apr 202604/22/2026, 12:33 PM
- Decision on Market Surveillance Committee Appointments - Memo - Apr 202604/22/2026, 5:21 PM
- Decision on Market Surveillance Committee Member Appointments - Motion - Apr 202604/30/2026, 10:51 AM
- Formation Committee Update - Apr 202604/22/2026, 7:38 PM
- Briefing on Day-Ahead Market Enhancements Configurable Parameters - Apr 202604/22/2026, 12:33 PM
- Briefing on Market Performance - Apr 202604/22/2026, 12:33 PM
- Department of Market Monitoring Update - April 202604/22/2026, 12:34 PM
- Market Surveillance Committee Update - Apr 202604/22/2026, 12:33 PM
Joint ISO Board of Governors and WEM Governing Body Executive Session
Related documents
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Draft Agenda - WEM Governing Body - Apr 28-29, 202604/21/2026, 12:00 PM
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Draft Agenda - ISO Board of Governors Meeting - Apr 29-30, 202604/21/2026, 12:00 PM
WEM Governing Body General Session
Related documents
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Final Agenda - WEM Governing Body - Apr 28-29, 202604/24/2026, 8:21 AM
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Video - WEM Governing Body General Session - Apr 28, 202604/30/2026, 4:04 PM
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Decision on WEM Governing Body Consent Agenda - Motion - April 28, 202604/28/2026, 4:21 PM
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3) CEO report
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CEO Report - Apr 202604/21/2026, 3:55 PM
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6) Decision on financial planning initiatives: Cost-of-Service Study extension and revenue requirement cap increase
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Decision on Financial Planning Initiatives - Cost of Service Study Extension and Revenue Requirement Cap Increase - Presentation - Apr 202604/21/2026, 6:40 PM
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Decision on Financial Planning Initiatives - Cost of Service Study Extension and Revenue Requirement Cap Increases - Memo - Apr 202604/21/2026, 6:40 PM
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Decision on Financial Planning Initiatives - Cost of Service Study Extension and Revenue Requirement Cap Increases - Motion - Apr 28, 202604/28/2026, 4:21 PM
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7) Decision on rate design for Regional Organization for Western Energy start-up funding
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Decision on Rate Design for Regional Organization for Western Energy Start-up Funding - Presentation - Apr 202604/21/2026, 3:55 PM
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Decision on Rate Design for Regional Organization for Western Energy Start-up Funding - Memo - Apr 202604/21/2026, 6:40 PM
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Decision on Rate Design for Regional Organization for Western Energy Start-up Funding - Motion - Apr 28, 202604/28/2026, 4:21 PM
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8) Extended day-ahead market and western energy imbalance market implementation update
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10) Informational reports
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Market Design Initiatives Update - Apr 202604/21/2026, 3:55 PM
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WEM Governing Body Budget Report - Q1 2026 - Apr 202604/21/2026, 3:55 PM
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WEM Governing Body Planning Calendar - Apr 202604/21/2026, 3:55 PM
- CEO Report - Apr 202604/21/2026, 3:55 PM
- Decision on Financial Planning Initiatives - Cost of Service Study Extension and Revenue Requirement Cap Increase - Presentation - Apr 202604/21/2026, 6:40 PM
- Decision on Financial Planning Initiatives - Cost of Service Study Extension and Revenue Requirement Cap Increases - Memo - Apr 202604/21/2026, 6:40 PM
- Decision on Financial Planning Initiatives - Cost of Service Study Extension and Revenue Requirement Cap Increases - Motion - Apr 28, 202604/28/2026, 4:21 PM
- Decision on Rate Design for Regional Organization for Western Energy Start-up Funding - Presentation - Apr 202604/21/2026, 3:55 PM
- Decision on Rate Design for Regional Organization for Western Energy Start-up Funding - Memo - Apr 202604/21/2026, 6:40 PM
- Decision on Rate Design for Regional Organization for Western Energy Start-up Funding - Motion - Apr 28, 202604/28/2026, 4:21 PM
- Market Design Initiatives Update - Apr 202604/21/2026, 3:55 PM
- WEM Governing Body Budget Report - Q1 2026 - Apr 202604/21/2026, 3:55 PM
- WEM Governing Body Planning Calendar - Apr 202604/21/2026, 3:55 PM
WEM Governing Body Executive Session
Related documents
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Final Agenda - WEM Governing Body - Apr 28-29, 202604/24/2026, 8:21 AM
Joint ISO Board of Governors and WEM Governing Body General Session
Related documents
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Final ISO Board of Governors and WEM Governing Body Joint General Session Minutes - Mar 04, 202605/04/2026, 9:46 AM
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Video - Joint ISO Board of Governors and WEM Governing Body General Session - Mar 04, 202603/05/2026, 3:07 PM
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Agendas
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Final Agenda - ISO Board of Governors Meeting - Mar 04-05, 202602/27/2026, 9:04 AM
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Final Agenda - WEM Governing Body Meeting - Mar 03-04, 202602/27/2026, 10:47 AM
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Consent agenda
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CEO report
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CEO Report - Mar 202602/24/2026, 2:57 PM
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Briefing on extended day-ahead market benefits methodology
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Briefing on Extended Day-Ahead Market Benefits Methodology - Mar 202602/25/2026, 1:14 PM
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Briefing on Day-Ahead Market Enhancements Configurable Parameters
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Briefing on Day-Ahead Market Enhancements Configurable Parameters - Mar 202602/25/2026, 4:30 PM
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Informational reports
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Department of Market Monitoring Update - Mar 202602/25/2026, 1:14 PM
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Market Performance Update - Mar 202602/25/2026, 1:14 PM
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Market Surveillance Committee Update - Mar 202602/25/2026, 5:03 PM
- Final Agenda - ISO Board of Governors Meeting - Mar 04-05, 202602/27/2026, 9:04 AM
- Final Agenda - WEM Governing Body Meeting - Mar 03-04, 202602/27/2026, 10:47 AM
- CEO Report - Mar 202602/24/2026, 2:57 PM
- Briefing on Extended Day-Ahead Market Benefits Methodology - Mar 202602/25/2026, 1:14 PM
- Briefing on Day-Ahead Market Enhancements Configurable Parameters - Mar 202602/25/2026, 4:30 PM
- Department of Market Monitoring Update - Mar 202602/25/2026, 1:14 PM
- Market Performance Update - Mar 202602/25/2026, 1:14 PM
- Market Surveillance Committee Update - Mar 202602/25/2026, 5:03 PM
Joint ISO Board of Governors and WEM Governing Body Executive Session
Related documents
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Final Agenda - ISO Board of Governors Meeting - Mar 04-05, 202602/27/2026, 9:04 AM
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Final Agenda - WEM Governing Body Meeting - Mar 03-04, 202602/27/2026, 10:47 AM
WEM Governing Body General Session
Related documents
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Final WEM Governing Body General Session Minutes - Mar 03, 202605/04/2026, 9:46 AM
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Video - WEM Governing Body General Session - Mar 03, 202603/04/2026, 12:00 PM
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Final Agenda - WEM Governing Body Meeting - Mar 03-04, 202602/27/2026, 10:47 AM
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Public comment
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CEO report
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CEO Report - Mar 202602/24/2026, 2:57 PM
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Policy spotlight briefing on price formation enhancements
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ISO Presentation - Policy Spotlight Briefing on Price Formation Enhancements - Mar 202602/24/2026, 2:57 PM
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Six Cities Perspective - Policy Spotlight Briefing on Price Formation Enhancements - Mar 202602/24/2026, 2:57 PM
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PGP Perspective - Policy Spotlight Briefing on Price Formation Enhancements - Mar 202602/24/2026, 2:57 PM
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PGE Perspective - Policy Spotlight Briefing on Price Formation Enhancements - Mar 202602/25/2026, 1:14 PM
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EDAM onboarding and implementation update
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Extended Day-Ahead Market Implementation Update - Mar 202602/24/2026, 4:31 PM
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WEIM benefits and market update - Q4 2025
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WEIM Benefits and Market Update - Q4 2025 - Mar 202602/24/2026, 2:57 PM
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Informational reports
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Policy Initiatives Update - Mar 202602/24/2026, 2:57 PM
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WEM Governing Body Budget Report - Q4 2025 - Mar 202602/24/2026, 2:57 PM
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WEM Governing Body Planning Calendar - Mar 202602/24/2026, 2:57 PM
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Consent agenda
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Decision on WEM Governing Body Consent Agenda - Motion - Mar 03, 202603/05/2026, 11:18 AM
- CEO Report - Mar 202602/24/2026, 2:57 PM
- ISO Presentation - Policy Spotlight Briefing on Price Formation Enhancements - Mar 202602/24/2026, 2:57 PM
- Six Cities Perspective - Policy Spotlight Briefing on Price Formation Enhancements - Mar 202602/24/2026, 2:57 PM
- PGP Perspective - Policy Spotlight Briefing on Price Formation Enhancements - Mar 202602/24/2026, 2:57 PM
- PGE Perspective - Policy Spotlight Briefing on Price Formation Enhancements - Mar 202602/25/2026, 1:14 PM
- Extended Day-Ahead Market Implementation Update - Mar 202602/24/2026, 4:31 PM
- WEIM Benefits and Market Update - Q4 2025 - Mar 202602/24/2026, 2:57 PM
- Policy Initiatives Update - Mar 202602/24/2026, 2:57 PM
- WEM Governing Body Budget Report - Q4 2025 - Mar 202602/24/2026, 2:57 PM
- WEM Governing Body Planning Calendar - Mar 202602/24/2026, 2:57 PM
- Decision on WEM Governing Body Consent Agenda - Motion - Mar 03, 202603/05/2026, 11:18 AM
WEM Governing Body Executive Session
Related documents
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Final Agenda - WEM Governing Body Meeting - Mar 03-04, 202602/27/2026, 10:47 AM
WEM Governing Body General Session
Related documents
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3) CEO report
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CEO Report - Dec 202512/09/2025, 3:12 PM
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6) Decision on gas resource management proposal
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Decision on Gas Resource Management - WEM Governing Body Motion - Dec 202512/18/2025, 9:42 AM
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Decision on Gas Resource Management - Final Market Surveillance Committee Opinion - Dec 202512/12/2025, 4:30 PM
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Decision on Gas Resource Management - PG&E Presentation - Dec 202512/11/2025, 5:15 PM
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Decision on Gas Resource Management - Idaho Power Presentation - Dec 202512/11/2025, 11:49 AM
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Decision on Gas Resource Management - PGE Presentation - Dec 202512/10/2025, 8:47 AM
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Decision on Gas Resource Management - Department of Market Monitoring Comments - Dec 202512/09/2025, 3:39 PM
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Decision on Gas Resource Management - Stakeholder Process Introduction - Dec 202512/09/2025, 3:12 PM
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Decision on Gas Resource Management - Memo - Dec 202512/09/2025, 3:12 PM
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Decision on Gas Resource Management - ISO Presentation - Dec 202512/09/2025, 3:12 PM
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7) Extended day-ahead market onboarding and implementation update
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Extended Day-Ahead Market Implementation Update - Dec 202512/09/2025, 4:09 PM
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8) Western energy imbalance market benefits and market update
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10) Informational reports
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WEM Governing Body Planning Calendar - Dec 202512/09/2025, 3:12 PM
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Policy Initiatives Update - Dec 202512/09/2025, 3:12 PM
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Revised Final Agenda - WEM Governing Body Meeting - Dec 16-17, 202512/15/2025, 10:53 AM
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Video - WEM Governing Body General Session - Dec 16, 202512/18/2025, 5:20 PM
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Department of Market Monitoring Update - Sep 202509/03/2025, 1:44 PM
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Final WEM Governing Body - General Session Minutes - Dec 16, 202503/04/2026, 12:06 PM
- CEO Report - Dec 202512/09/2025, 3:12 PM
- Decision on Gas Resource Management - WEM Governing Body Motion - Dec 202512/18/2025, 9:42 AM
- Decision on Gas Resource Management - Final Market Surveillance Committee Opinion - Dec 202512/12/2025, 4:30 PM
- Decision on Gas Resource Management - PG&E Presentation - Dec 202512/11/2025, 5:15 PM
- Decision on Gas Resource Management - Idaho Power Presentation - Dec 202512/11/2025, 11:49 AM
- Decision on Gas Resource Management - PGE Presentation - Dec 202512/10/2025, 8:47 AM
- Decision on Gas Resource Management - Department of Market Monitoring Comments - Dec 202512/09/2025, 3:39 PM
- Decision on Gas Resource Management - Stakeholder Process Introduction - Dec 202512/09/2025, 3:12 PM
- Decision on Gas Resource Management - Memo - Dec 202512/09/2025, 3:12 PM
- Decision on Gas Resource Management - ISO Presentation - Dec 202512/09/2025, 3:12 PM
- Extended Day-Ahead Market Implementation Update - Dec 202512/09/2025, 4:09 PM
- WEM Governing Body Planning Calendar - Dec 202512/09/2025, 3:12 PM
- Policy Initiatives Update - Dec 202512/09/2025, 3:12 PM





