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February 25, 2026

California Independent System Operator (CAISO)

CAISO Proposes TO-focused Black Start Procurement
CAISO’s straw proposal for procuring black start resources would entail significant collaboration with affected transmission owners.
Questions Linger over CAISO Small TO Interconnection Proposal
Stakeholders have lingering questions about the CAISO interconnection proposal to protect small transmission owners from bearing the costs of upgrades.
CAISO Takes First Stab at Defining Frequency Response Market
CAISO officials and stakeholders discussed the ISO's primary frequency response product initiative.
CAISO Issues Final Plan for Small TO Interconnection Costs
The CAISO proposal would prevent small transmission owners from bearing high interconnection costs, a circumstance faced by Valley Electric.
WECC
CAISO Gets Breathing Room on EIM Intertie Bidding from FERC
FERC said it will give CAISO more time to address its concerns over intertie bidding at the borders of the Energy Imbalance Market (EIM).
FERC OKs CAISO Frequency Response Contract Terms
FERC said that CAISO contracts for transferred frequency response service can include a provision recognizing counterparties.
CAISO: Don’t Lean on EIM for Capacity
Participants in the Energy Imbalance Market (EIM) should not rely on it to reduce their capacity requirements, CAISO cautioned.
EIM Benefits up 8% in Q4 with APS, Puget Sound Additions
Members of the Energy Imbalance Market (EIM) saw increased savings and profits with the addition of Puget Sound Energy and APS.
APS to Maintain Market Rate Authority in Tucson Electric BAA
Arizona Public Service (APS) can continue to charge market-based rates in Tucson Electric Power’s balancing authority area, FERC ruled.
FERC Denies Multiple Energy Crisis Rehearing Requests
The FERC decision dealt with companies implicated in manipulating prices during the initial "Summer Period" of the Western Energy Crisis.

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