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.
A WECC report predicts annual demand in the Western Interconnection will grow from 942 TWh in 2025 to 1,134 TWh in 2034, although it says the region should have the resources necessary to meet that load.
Portland General Electric’s rate hikes largely stem from increased wholesale power market costs, the utility wrote after Sen. Ron Wyden voiced concern that Oregon customers are struggling to pay their electricity bills.
The Balancing Authority of Northern California became the third entity to formally join CAISO’s Extended Day-Ahead Market, following PacifiCorp and Portland General Electric.
The joint announcement by APS, SRP, TEP and UniSource Energy marks a significant win for SPP after a string of victories for CAISO’s competing Extended Day-Ahead Market.
The Pathways Initiative drew praise from many quarters with the vote to approve its “Step 2” proposal, but it was quickly apparent the development will do little to sway Markets+ supporters.
The West-Wide Governance Pathways Initiative received a significant financial boost when DOE awarded nearly $1 million to underwrite its efforts to establish a Western “regional organization” to oversee CAISO’s WEIM and EDAM.
Powerex intends to terminate a large portion of its rights on PacifiCorp’s transmission system in response to the utility’s plans to update its transmission tariff to align with CAISO’s EDAM.
CAISO's Resource Adequacy Modeling and Design "workshop" is designed to reevaluate and refine several mechanisms the ISO uses to ensure resource adequacy.
CAISO will be inherently compromised in its role as an operator of a deeper Western market because of its conflicting responsibilities as BA within that market, a group of entities that support SPP’s Markets+ argue in their latest “issue alert.”
The Bonneville Power Administration says following through on its $25 million funding commitment to the development of SPP's Markets+ is simply a matter of preserving choice.
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