CAISO/WEIM
CAISO Board of GovernorsCalifornia Agencies & LegislatureCalifornia Air Resources Board (CARB)California Energy Commission (CEC)California LegislatureCalifornia Public Utilities Commission (CPUC)EDAMOther CAISO CommitteesWestern Energy Imbalance Market (WEIM)WEIM Governing Body
The California Independent System Operator serves about 80% of California's electricity demand, including the service areas of the state's three investor-owned utilities. It also operates the Western Energy Imbalance Market, an interstate real-time market covering territory that accounts for 80% of the load in the Western Interconnection.
CAISO's Western Energy Imbalance Market hit a record $739 million in member benefits in 2021, putting its total close to $2 billion since it launched in 2014.
Jaywm, CC BY-SA 4.0, via Wikimedia Commons
Washington utilities Avista and Tacoma Power will not delay their entry into the Western EIM, despite BPA’s decision to postpone joining by two months.
CAISO's new 20-year transmission outlook projects a need for $30.5 billion in new lines to carry renewable and stored power across California and the West.
A WECC study found that the West needs emerging technologies capable of replicating the performance of gas plants to reach 100% clean energy by 2040.
The Bonneville Power Administration said it will delay its entry into the Western EIM by two months to work out technical and training issues.
Low-income residents in certain parts of California are finding their EV incentives are accompanied by a tax liability.
PG&E ended five years of probation, but the judge in charge of the case said the utility remains a danger to Californians in high fire-threat areas.
Two Washington bills seek opposite outcomes for the state’s Energy Facility Site Evaluation Council.
The D.C. Circuit overruled FERC in cases brought by San Francisco against the commission and PG&E, which the city said refused to provide required service.
CAISO's Board of Governors extended controversial wheel-through restrictions for two more years as the ISO works on a long-term fix to transmission constraints.
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