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Harmonizing IBR Interconnection Requirements in the West

Posted: 3 hours ago

Harmonizing IBR Interconnection Requirements in the West Utilities across the Western Interconnection are rapidly deploying inverter-based resources (IBRs), yet interconnection requirements vary widely across transmission providers. These inconsistencies create uncertainty for developers, increase redesign risk, and can lead to uneven…

WIEB Webinar: 2025 Nuclear Executive Orders and Western Implications

Posted: 20 Nov at 1:55 pm

In May 2025, the Trump Administration issued four executive orders (EOs) – Reinvigorating the Nuclear Industrial Base, Reforming the Nuclear Regulatory Commission, Deploying Nuclear Reactor Technologies for National Security, and Reforming Nuclear Reactor Testing at DOE – that attempt a shift in U.S. nuclear…

WIRAB Technical Resource: Oversight of IBRs

Posted: 13 Nov at 9:32 am

WIRAB Technical Resource: Oversight of Inverter-Based Resources (IBRs) in the West Utilities in the Western Interconnection are rapidly adding inverter-based resources (IBRs) such as solar, wind, and battery storage. In 2024, WIRAB commissioned the IBR Risk Assessment Report, which identified…

Open Letter from COSR Chair and Vice Chair to Participants in the Western Resource Adequacy Program

Posted: 23 Oct at 10:59 am

The Chair and Vice Chair of the Committee of State Representatives (COSR) prepared a letter in response to various letters between WRAP Participants and the Western Power Pool in advance of the October 31, 2025 exit notice deadline. You may…

WIEB 2025 Annual Update

Posted: 15 Sep at 2:14 pm

A brief report summarizing WIEB activities over the past year. The report can be read here.

State Exploration of Western Transmission Cost Allocation Frameworks

Posted: 7 Aug at 1:36 pm

The Committee on Regional Electric Power Cooperation is pleased to announce the final working materials of the State Exploration of Western Transmission Cost Allocation Frameworks study it began with Energy Strategies in February 2025, with the support of funding from the U.S.…

Nuclear Fusion: A Policy Brief | February 2025

Posted: 6 Aug at 1:21 pm

Fusion, the process that powers the sun and all stars in which two light atomic nuclei combine to form a single heavier one, releases vast amounts of energy, and it has long dangled the promise of being able to tap…

WIRAB Leadership Announcement | August 5, 2025

Posted: 5 Aug at 5:12 pm

Commissioner Mary Throne of the Wyoming PSC left state service on August 1 to pursue a new opportunity. Consequently, she stepped down from the Western Interconnection Regional Advisory Body (WIRAB) and vacated her role as Chair. Commissioner Throne served WIRAB…

WIRAB Advice on the WECC 2026 Business Plan and Budget | May 2025

Posted: 16 May at 11:29 am

WIRAB submitted Advice to the WECC Board of Directors on the proposed 2026 Business Plan and Budget (BP&B) for WECC. WIRAB reviewed the proposed 2026 BP&B and found the statutory budget and assessment to be reasonable and in the public…

2026 WIRAB Business Plan and Budget Posted for Public Comment

Posted: 1 May at 8:55 am

The Western Interconnection Regional Advisory Body (WIRAB) draft 2026 Business Plan and Budget (BP&B) is available for comment. Interested parties should submit comments by 5:00 PM MT on May 16, 2025. Please direct inquiries and e-mail comments to Eric Baran (ebaran@westernenergyboard.org),…

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