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News Releases
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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
California ISO Adopts Policies Supporting Grid Reliability
12/16/2022 09:01
California ISO Welcomes PacifiCorp’s Announcement to Participate in the Extended Day-Ahead Market
12/08/2022 10:01
California ISO Posts Analysis of September Heat Wave
11/02/2022 16:27
WEIM Posts $526 Million in Quarterly Benefits
10/31/2022 12:57
ISO Board Adopts Interconnection Process Improvements
10/27/2022 13:00
The WEIM Gains $287 Million in Benefits during the Second Quarter
7/29/2022 12:30
ISO Board & WEIM Governing Body Fill GRC Vacancy
7/21/2022 15:03
WEIM Governing Body Elects Chair and Vice Chair
6/29/2022 15:07
WEIM Governing Body Announces New Market Expert
6/02/2022 10:00
California ISO Welcomes BPA and Tucson Electric Power to the WEIM
5/03/2022 08:59
California ISO Adopts New Grid Emergency Notifications
5/02/2022 10:42
Western Energy Imbalance Market Surpasses $2 Billion in Benefits
4/21/2022 11:40
Two More Utilities Join the Western Energy Imbalance Market
3/02/2022 10:28
California ISO Board of Governors and WEIM Governing Body Approve First Set of Resource Sufficiency Enhancements
2/10/2022 16:12
Western EIM Achieves Record-setting $739 Million in Benefits for 2021
1/31/2022 11:52
ISO Board and WEIM Governing Body Appoint Committee Members
1/20/2022 12:43
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Notices
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Cancelled: 6/5/23 FERC Order No. 881 - Managing Transmission Line Ratings Phase 2 Data Submission Working Group
5/31/2023 11:32
Extended Day-Ahead Market: Working Drafts of Draft Tariff Language Documents Posted
5/24/2023 11:16
Extended Day-Ahead Market: Section 33 Working Draft of Draft Tariff Language Posted
5/18/2023 11:10
Extended Day-Ahead Market: Addendum to Draft Tariff Language Posted
5/16/2023 10:50
Market Surveillance Committee Updated Final Opinion to be Posted
5/12/2023 11:16
WEIM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee, and Audit Committee: May 16-18, 2023 Meetings; Final Agendas
5/12/2023 10:09
WEIM Governing Body, Joint, ISO Board of Governors, DMM Oversight Committee, and Audit Committee: May 16-18, 2023 Meetings; Draft Agendas
5/09/2023 12:01
Extended Day-Ahead Market ISO Balancing Authority Area Participation Rules: Issue Paper and Track A1 Straw Proposal Posted, Registration Reminder for 5/10/23 Hybrid Meeting
5/05/2023 11:24
FERC Order No. 881 - Managing Transmission Line Ratings Phase 2: Q2 2023 Initiative Update Call on 5/11/23
5/04/2023 15:45
Day-Ahead Market Enhancements Revised Final Proposal and Flexible Parameters Matrix Posted
5/01/2023 15:39
Extended Day-Ahead Market: Tariff Workshops on 5/15/23, 5/19/23 and 5/22/23
5/01/2023 12:28
The Western Energy Imbalance Market Q1 Benefits Report will be Delayed for Further Review and Analysis of Results
4/28/2023 10:58
Washington WEIM Greenhouse Gas Enhancements: Notice of Expected Activation
4/27/2023 10:53
Day-Ahead Market Enhancements: Revised Final Proposal, Call on 5/2/23
4/26/2023 10:48
Cancelled: FERC Order No. 881 - Managing Transmission Line Ratings Phase 2 Data Submission Working Group on 5/1/23
4/26/2023 10:48
Adjustment to GMC Rates and WEIM Administrative Fees Effective Trade Date 5/1/23
4/24/2023 10:47
23M4 Full Network Model Production Deployment
4/24/2023 10:47
ISO Board of Governors, WEIM Governing Body, and Committees: Updated Meeting Schedule Posted
4/21/2023 09:33
WEIM Resource Sufficiency Evaluation Enhancements Phase 2 - Track 1 Training on 4/26/23
4/19/2023 12:07
Extended Day-Ahead Market ISO Balancing Authority Area Participation Rules: Issue Paper and Track A Straw Proposal, Hybrid Meeting on 5/10/23
4/19/2023 10:19
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