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News releases

See the latest on the ISO including our response to breaking developments in the energy industry.

Recent

News Release | Western Energy Markets

BHE Montana becomes eighth utility to commit to the Extended Day-Ahead Market
News Release | Western Energy Markets

Western Energy Markets Quarterly Benefits Report debuts with first Extended Day-Ahead Market results
News Release | Western Energy Markets

Anita Decker reappointed to Western Energy Markets Governing Body
News Release | Transmission

ISO Board of Governors approves 2025-2026 transmission plan
News Release | Western Energy Markets

Black Hills Corp.’s South Dakota and Wyoming electric utility subsidiaries join Western Energy Imbalance Market
News Release | Western Energy Markets

BHE Montana joins the Western Energy Imbalance Market
News Release | Western Energy Markets

EDAM is live: PacifiCorp and CAISO successfully launch new market May 1
News Release | Leadership

Two new Market Surveillance Committee members appointed; ISO Board of Governors also names new vice chair
News Release | Western Energy Markets

Western Energy Imbalance Market continues to deliver with over $8.6 billion in total benefits to date
News Release | Western Energy Markets

UPDATED: New registration link now available Joint Virtual Press Conference: Launch of the Extended Day-Ahead Market (EDAM)
News Release | Transmission

Draft transmission plan now available; recommends 38 infrastructure upgrades to meet growing electricity demand
News Release | Western Energy Markets

Western Energy Imbalance Market surpasses $8 billion in total benefits since inception
News Release | Western Energy Markets

CAISO submits first Assembly Bill 825 report to Legislature and Governor
News Release | Western Energy Markets

Western Energy Imbalance Market surpasses $7.82 billion in total benefits
Update | Western Energy Markets

Gov. Newsom signs landmark legislation for independent governance of Western electricity markets
Update | Western Energy Markets

Pathways legislation passed: Advancing independent governance of Western energy markets
News Release | Western Energy Markets

WEIM posts strong Q2, surpassing $7.4 billion in total benefits
News Release | Western Energy Markets

WEM Governing Body approves important market reliability feature
News Release | Western Energy Markets

Public Service Company of New Mexico commits to join the Extended Day-Ahead Market
News Release | Western Energy Markets

Deborah Smith, former Seattle City Light CEO, added to Western Energy Markets Governing Body
News Release | Western Energy Markets

Imperial Irrigation District to join both ISO-operated electricity markets
News Release | Transmission

ISO Board of Governors approves 2024-2025 transmission plan
News Release | Western Energy Markets

Turlock Irrigation District commits to joining Extended Day-Ahead Market
News Release | Western Energy Markets

Western Energy Imbalance Market approaches new milestone
News Release | Transmission

California ISO releases 2024-2025 Draft Transmission Plan
News Release | Western Energy Markets

WEIM cumulative benefits approach $7 billion
News Release | Leadership

California ISO Names Chief Information & Technology Officer
View all news releases
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