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Turlock Irrigation District commits to joining Extended Day-Ahead Market
Western Energy Imbalance Market approaches new milestone
California ISO releases 2024-2025 Draft Transmission Plan
WEIM cumulative benefits approach $7 billion
Severin Borenstein elected ISO Board of Governors Chair
Balancing Authority of Northern California signs agreement to join the Extended Day-Ahead Market
Western energy market governance moves forward
Western Energy Imbalance Market surpasses the $6 billion benefit milestone
Major transmission intertie project gets another boost
FERC approves ISO interconnection reforms
California ISO announces agreement with Black Hills Corp. subsidiaries for future participation in Western Energy Imbalance Market
Western energy market governance enhancements approved
WEIM Entities Share Sizeable Energy Transfers During Q2 2024
Western Energy Market Governance Enhancements Approved
2024 Summer Loads and Resources Assessment
5/09/2024 10:26
WEIM Participants Realize $436 Million in First Quarter Benefits
4/30/2024 15:08
PacifiCorp Formally Commits to California ISO’s EDAM
4/26/2024 13:21
WEIM Benefits Report Shows another Historic Milestone
1/31/2024 10:46
FERC Accepts ISO Tariff Changes for a Western Day-ahead Electricity Market
12/21/2023 13:53
Western Energy Imbalance Market Hits $4.66 Billion in Total Benefits
10/31/2023 11:43
ISO Board, WEIM Governing Body Jointly Adopt Market Rules Affecting California and the West
9/22/2023 09:31
Development of Extended Day-Ahead Market Reaches Milestone
8/23/2023 08:31
High Heat Predicted across the West through the Week
8/13/2023 10:00
Extended Day-Ahead Market Forum set in Las Vegas
8/03/2023 10:07
Western Energy Imbalance Market exceeds $4 billion in total benefits
7/31/2023 13:47
WEIM Governing Body Elects Wagner; Reappoints Decker to Third Term
6/23/2023 11:49
WEIM First-Quarter Benefits for 2023 Reach $418 Million
5/31/2023 10:01
CAISO 2022-2023 Transmission Plan Approved
5/18/2023 15:46
New Entities Expand WEIM’s Reach to a Total of 11 Western States
4/05/2023 11:00
Western Day-Ahead Market Enhancements Approved
2/02/2023 10:07
Western Energy Imbalance Market Tops $3B in Benefits
1/31/2023 10:05
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WEM Governing Body, Joint, ISO Board of Governors, Department of Market Monitoring Oversight and Audit Committees: 5/20/25 – 5/22/25 meetings; final agendas posted
WEM Governing Body, Joint, ISO Board of Governors, Department of Market Monitoring Oversight, and Audit Committees: 5/20/25 – 5/22/25 meetings; draft agendas posted
Western Energy Markets Regional Issues Forum Enhancement Discussion Paper; comments due 5/15/25
WEM Governing Body, ISO Board of Governors, Joint, DMM Oversight Committee, and Audit Committee: Updated 2025-2026 meeting schedule posted
New Initiative: WEIM - Assistance Energy Transfer Extension call on 4/16/25
Western Energy Markets Regional Issues Forum hybrid meeting on 4/9/25; discussion paper and final agenda posted; registration requested
WEM Governing Body general session meeting on 4/8/25; revised final agenda posted
WEM Governing Body general session meeting on 4/8/25; final agenda posted
WEM Governing Body, Joint, ISO Board of Governors, and DMM Oversight Committee meetings on 3/25/25-3/26/25; final agendas posted
Greenhouse Gas Coordination Working Group: virtual meeting on 3/26/25
Western Energy Markets Regional Issues Forum on 4/9/25; final agenda posted; registration requested
WEM Governing Body, Joint, ISO Board of Governors, and DMM Oversight Committee meetings on 3/25/25-3/26/25; draft agendas posted
New Initiative: Extended Day-Ahead Market (EDAM) Congestion Revenue Allocation: Hybrid Stakeholder Workshop on 3/24/25; Issue paper will be posted on 3/17/25
WEM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: Updated 2025-2026 meeting schedule posted
Update: Nominating Committee seeks nominations for Western Energy Markets Governing Body member candidates by 3/21/25
Price Formation Enhancements: Phase 2 working group call on 3/5/25
Western Energy Markets Regional Issues Forum on 4/9/25; registration requested
Price Formation Enhancements: Comment template for 2/6/25 call posted, comments due 2/27/25
WEM Governing Body, Joint, ISO Board of Governors, and Audit Committee: 2/10/25 – 2/12/25 meetings, final agendas posted
25M2_DB133 Full Network Model production deployment
2025 Annual Policy Initiatives Roadmap Process: Policy Initiatives Catalog submissions due 2/28/25
FERC Order 881 Track 2 – Managing Transmission Line Ratings webinar training on 2/19/25
WEM Governing Body, Joint, ISO Board of Governors, and Audit Committee: 2/10/25 - 2/12/25 meetings; draft agendas posted
Price Formation Enhancements: Phase 2 working group call on 2/6/25
EDAM ISO Balancing Authority Area Participation Rules - Business Requirements Specification version 1.4 available; Comments due 2/21/25
Gas Resource Management Working Group: Issue Paper posted, call on 2/13/25
WEM Nominating Committee begins its 2025 process; updated member list posted
Resource Adequacy Modeling and Program Design working group, hybrid workshops on 2/10/25 and 2/11/25
FERC Order No. 881 - Managing Transmission Line Ratings Phase 2, call on 1/24/25
Day-Ahead Sufficiency Working Group: Draft Final Proposal posted, call on 1/21/25
Department of Market Monitoring Oversight Committee executive session meeting on 1/21/25, final agenda posted
New Initiative: Demand and Distributed Energy Market Integration Working Group call on 2/5/25
Congestion Revenue Rights Enhancements working group call on 1/28/25
Interconnection Process Enhancements 2023: Track 3 Draft final proposal, call on 1/15/25
Update: Price Formation Enhancements Phase 2 working group call rescheduled from 1/9/25 to 1/22/25
AT&T Circuit Migration
Reporting ISO/RTO Costs effective 1/1/25 pursuant to FERC Order No. 668
Greenhouse Gas Coordination Working Group: Issue Paper posted; virtual meeting on 1/21/25
Department of Market Monitoring 2024 Q3 Market Issues and Performance Report, call on 1/9/25
Price Formation Enhancements: Phase 2 working group call on 1/9/25
Transmission Service and Market Scheduling Priorities Phase 2 Track 3 for Resales or Assignments of Monthly Wheeling Through Priority activation effective 12/16/24
WEM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee meetings: 12/17/24-12/19-24; final agendas posted
WEM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee meetings: 12/17/24-12/19-24; draft agendas posted
Day-Ahead Market Enhancements: Configurable Parameters Implementation working group on 12/11/24
Price Formation Enhancements: Phase 2 working group call on 12/19/24
WEM Governing Body, Joint, ISO Board of Governors, and DMM Oversight Committee: 11/6/24 - 11/7/24 meetings; final agendas posted
WEM Governing Body, Joint, ISO Board of Governors virtual meetings on 11/6/24-11/7/24; early document posting
California ISO to livestream 2024 Stakeholder Symposium on Oct. 30, 2024 for virtual attendance
Western Energy Markets Governing Body executive session meeting on 10/18/24: final agenda posted; updated schedule
Western Energy Markets Regional Issues Forum on 10/29/24, draft agenda posted; registration requested
ISO Board of Governors, DMM Oversight Committee and Audit Committee meetings on 10/4/24; final agendas posted
ISO Board of Governors, DMM Oversight Committee and Audit Committee meetings on 10/4/24; draft agendas posted
Western Energy Markets Regional Issues Forum on 10/29/24; registration requested
Inter-SC Trades in Regional Markets: Draft tariff language posted, call on 10/10/24
Western Energy Markets Governing Body and Joint Meetings in Tempe, Arizona 9/25/24-9/26/24; final agendas posted
New to CAISO.com the Points of Interconnection Heatmap
Western Energy Markets Governing Body and Joint Meetings in Tempe, Arizona 9/25/24-9/26/24; draft agendas posted; registration requested
Greenhouse Gas Coordination: Price Formation Evergreen Training posted
Western Energy Markets Regional Issues Forum on 9/27/24, final agenda posted
Inter-SC Trades in Regional Markets: Draft final proposal posted; call on 9/11/24
Greenhouse Gas Coordination: Hybrid working group on 9/19/24
ISO Board of Governors and Western Energy Markets Governing Body meetings on 8/13/24 and 8/19/24, Final agendas posted; Updated schedule
WEIM Governing Body Hybrid Meeting on 6/20/24; Revised Final Agenda posted; Registration requested but Not Required
Annual Policy Initiatives Roadmap Process 2024: Draft Discretionary Policy Initiatives Catalog, Call on 6/12/24
Greenhouse Gas Coordination Hybrid Working Group on 6/26/24
Resource Adequacy Modeling and Program Design Hybrid Working Group on 6/18/24
West-Wide Governance Pathways Initiative - Step 1: Recommendation posted; Call on 6/18/24
Western Energy Imbalance Market Regional Issues Forum on 6/20/24, Final Agenda Posted; Registration Requested
Registration Reminder: Market Performance and Planning Forum Hybrid Meeting on 6/27/24
Update: Greenhouse Gas Coordination Working Group on 6/26/24 Moved to 7/15/24 and Virtual-Only Format
Reminder for previous CAISO website will be decommissioned effective July 1, 2024
Annual Policy Initiatives Roadmap Process 2024: Reminder Draft Discretionary Policy Initiatives Catalog Survey due 6/26/24
Market Performance and Planning Forum, Hybrid Meeting on 6/27/24
Registration Now Open for the 2024 ISO Stakeholder Symposium; Sponsorship Opportunities Available
Decommissioning Date for Previous CAISO Website has been Extended to 7/15/24
Resource Sufficiency Evaluation Enhancements Phase 2 Track 2 Activation Effective 7/1/24
Resource Sufficiency Evaluation Enhancements Phase 2 Track 2 activation effective today 7/1/24
WEIM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: 7/16/24 - 7/18/24 meetings; draft agendas; updated meeting schedule
Update: Virtual-only Greenhouse Gas Coordination working group on 7/15/24 moved to 7/29/24
West-Wide Governance Pathways - Step 1 Initiative: Stakeholder Call on 7/23/24; Reminder: Comments due 7/10/24 regarding Step 1 Recommendation
Previous CAISO website will be decommissioned 7/15/24
WEIM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: 7/16/24 - 7/18/24 meetings; final agendas posted
New stakeholder process document posted - Policy Initiative Timeline Overview
Annual Policy Initiatives Roadmap Process 2024: Final discretionary policy initiatives catalog release
Western Energy Markets Regional Issues Forum – Sector Liaison Search
Resource Adequacy Modeling and Program Design: Revised Discussion Paper and Final Recommendation Plan posted
Day-Ahead Market Enhancements: Configurable Parameters Implementation working group on 8/7/24
No Content Posted to CAISO.com, No Daily Briefing on May 29, Due to New Website Launch
5/28/2024 10:32
Transmission Service and Market Scheduling Priorities Phase 2 Available for Daily Wheeling Through Priority Effective Operating Date 6/1/24; Request Window Opens 5/25/24
5/24/2024 15:08
Greenhouse Gas Coordination: Working Group on 5/29/24 Moved to Virtual-Only Format
5/24/2024 10:19
Western Energy Imbalance Market Regional Issues Forum on 6/20/24, Draft Agenda Posted; Registration Requested
5/23/2024 11:23
Registration Reminder: Greenhouse Gas Coordination Working Group on 5/29/24
5/23/2024 11:23
WEIM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: 5/21/24 - 5/23/24 Meetings; Final Agendas Posted; 2024-2025 Meeting Schedule
5/17/2024 10:22
WEIM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: 5/21/24 - 5/23/24 Meetings; Draft Agendas Posted
5/14/2024 09:40
Full Network Model Schedule for 2025 Posted
5/10/2024 09:52
Updated Meeting Schedule for ISO Board of Governors: Board to Receive Briefing on Interconnection Process Enhancements Track 2 Final Proposal at 5/22/24 Meeting; Special Session for Board Decision on 6/12/24
5/09/2024 11:03
2024 California ISO Summer Loads and Resources Assessment Posted
5/08/2024 15:26
Annual Policy Initiatives Roadmap Process 2024 Working Group on 5/15/24
5/08/2024 11:04
New interactive Resource Owner/Operator Desk Reference Guide Now Available
5/07/2024 09:26
Webinar Training Sessions for the New CAISO Website on 5/23/24 and 5/29/24
5/06/2024 13:15
Day-Ahead Sufficiency: Straw Proposal Posted, Call on 5/13/24
5/06/2024 13:15
Western Energy Imbalance Market Regional Issues Forum on 6/20/24; Registration Requested
5/06/2024 10:40
Regional Issues Forum Roundtable Summary Posted
5/03/2024 10:06
24M3 Full Network Model Production Deployment
3/19/2024 16:01
WEIM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: 3/19/24 - 3/20/24 Meetings; Final Agendas Posted
3/15/2024 12:22
Western Energy Imbalance Market Regional Issues Forum on 3/18/24, Final Agenda Posted; Registration Requested
3/12/2024 09:52
WEIM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee and Audit Committee: 3/19/24 - 3/20/24 Meetings; Draft Agendas Posted
3/12/2024 09:52
April Solar Eclipse Technical Bulletin and Presentation Posted for 3/11/24 Informational Call
3/07/2024 12:59
Winter Conditions Report for January 2024 Posted, Call Set for 3/11/24
3/06/2024 13:00
WEIM Governing Body Virtual General Session on 3/7/24; Final Agenda Posted
2/27/2024 11:43
New Initiative - Penalty Enhancements: Demand Response, Investigation, and Tolling, Straw Proposal Call on 4/3/24
2/22/2024 11:49
ISO Board of Governors, WEIM Governing Body and Committees: Updated 2024 Schedule Posted
2/22/2024 11:49
Greenhouse Gas Coordination Working Group on 3/14/24
2/22/2024 11:49
Reliability Demand Response Resource Minimum On Time Initiative Moved to Inactive
2/08/2024 12:52
Western Energy Imbalance Market Regional Issues Forum - Sector Liaison Search
2/05/2024 08:47
WEIM Governing Body, Joint, ISO Board of Governors, and Audit Committee: 2/6/24 - 2/8/24 Meetings; Final Agendas
2/02/2024 10:29
Save the Date: The California ISO Stakeholder Symposium to be held Oct. 29-30, 2024 in Sacramento, California
2/01/2024 11:36
WEIM Governing Body, Joint, ISO Board of Governors, and Audit Committee: 2/6/24 - 2/8/24 Meetings; Draft Agendas; Updated Meeting Schedule
1/30/2024 12:27
Day-Ahead Market Enhancements and Extended Day-Ahead Market Call on 2/6/24
1/30/2024 12:27
Greenhouse Gas Coordination Working Group on 2/22/24
1/29/2024 10:52
Annual Policy Initiatives Roadmap Process 2024 Call on 1/30/24
1/23/2024 11:32
Department of Market Monitoring Oversight Committee Executive Session on 1/25/24, Final Agenda Posted
1/18/2024 13:52
Reliability Demand Response Resource Minimum On Time Final Proposal, Call on 1/24/24
1/17/2024 12:56
Gas Resource Management Working Group Call on 1/25/24
1/17/2024 12:56
ISO Board of Governors, WEIM Governing Body and Committees: Updated 2024 Schedule Posted
1/04/2024 12:52
Price Formation Enhancements Initiative Working Group Meeting on 1/10/24
1/03/2024 10:51
Pre-Registration Open: Greenhouse Gas Coordination Working Group on Jan. 11, 2024
1/03/2024 10:51
Pre-Registration Open: Transmission Service and Market Scheduling Priorities Phase 2 Track 1 Call on 1/9/24
1/02/2024 13:41
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