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.
In approving construction of new transmission facilities for a 49-MW data center in Sunnyvale, the California Public Utilities Commission relied on a process typically used for distribution projects.
One of the first items the yet-to-be-seated board of the Regional Organization for Western Energy could decide on is whether to administer a resource adequacy program, as backers seek to have a proposal in place later in 2026.
FERC approved changes to electronic quarterly reports, which are required of market participants and help track rates and charges of the firms it regulates.
The Western Transmission Expansion Coalition’s 10-year outlook has spurred talks about increased coordination between jurisdictions to upgrade or build 12,600 miles of transmission in the West and fueled calls for states to create a task force to streamline permitting and other issues.
The Washington Senate passed a bill to establish a transmission authority intended to help the state improve system capacity and meet growing demand by reducing the timeline to complete new transmission projects.
Participants in CAISO’s Extended Day-Ahead Market likely would remain subject to the market’s daily resource sufficiency evaluation even if they joined a new resource adequacy program that’s being crafted.
CAISO is proposing new methods to address “poor quality data” from some variable energy resources in the region in order to improve grid forecasting, the ISO said in a straw proposal.
Arizona Public Service notified the Nuclear Regulatory Commission it plans to seek operating license renewals for all three units at Palo Verde Generating Station, potentially extending operations through the mid-2060s.
California’s historic battery storage boom over the past five years has not kept up with EV capacity growth in the state — and now officials want to send idle electrons back to buildings, homes and the grid through new bidirectional chargers.
The push to develop a resource adequacy program serving non-CAISO members of the ISO’s Extended Day-Ahead Market appears to be gathering momentum, with backers saying they aim to produce a draft design for the program in April.
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