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.
First-quarter electricity prices in CAISO markets were down sharply from the same period in 2023, despite sharp spikes during the January cold snap in the Pacific Northwest, the ISO’s Department of Market Monitoring said.
Markets+ proponents argue that the SPP framework allows more flexibility for integrating greenhouse gas emission reduction programs across various states than CAISO’s EDAM.
The West-Wide Governance Pathways Initiative has revised its “regional organization” stakeholder process proposal to expand the size of a key stakeholder committee and boost representation for some groups.
The growth of battery storage resources in the West largely contributed to an "uneventful" summer on the grid, despite record-breaking peak loads and temperatures.
FERC granted and denied in part challenges to Pacific Gas and Electric’s 2022 transmission rates, finding that PG&E must remove certain costs from its rate base while also denying a request to pause the utility’s ability to recover costs stemming from two fires.
The study comparing key features of CAISO’s EDAM and SPP’s Markets+ contains “several material misstatements of facts” and overlooks evidence “directly contrary to its conclusions,” Powerex contends.
FERC Commissioner David Rosner told members of the American Clean Power Association that one of his main goals is to successfully manage the energy industry’s transition.
BPA would earn $65 million in annual benefits from joining CAISO’s EDAM but face $83 million in increased yearly costs from participating in SPP’s Markets+, according to a new Brattle study.
CAISO described to stakeholders how it will apply the Extended Day-Ahead Market transmission revenue recovery mechanism to its own balancing authority area.
State utility commissioners who launched the West-Wide Governance Pathways Initiative in July 2023 have praised the initiative’s “Step 2” proposal to create a “regional organization.”
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