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December 28, 2025

California Independent System Operator (CAISO)

California Governor’s Office of Emergency Services
FERC OKs One-Year Extension for CAISO’s Aliso Canyon Gas Rules
FERC approved the CAISO plan to extend the temporary Tariff provisions the ISO implemented after last year’s closure of Aliso Canyon.
© RTO Insider
States Should Assert Selves in RTOs, NARUC Panelists Say
At last week's NARUC Annual Meeting, regulators and grid operators agreed that state commissions must engage when key decisions are being made by RTOs.
Tucson Electric Could See Loss of Market Rate Authority in its BAA
Tucson Electric could become the latest Western utility to lose authorization to sell electricity at market-based rates within its balancing authority area.
FERC OKs Local Market Power Measures for CAISO
FERC has approved CAISO’s plan to fine-tune its procedure for preventing generators from exercising local market power during transmission constraints.
Stakeholders Seek Clarity on CAISO Policy Initiative Process
Stakeholders voiced concerns about CAISO’s annual process for determining which “discretionary” policy initiatives the ISO should pursue in the coming year.
CPUC Contests ISO Incentive for PGE
The California PUC (CPUC) is protesting the FERC decision to allow PG&E (NYSE:PCG) to include an ISO adder in its 2017 transmission rates proposal.
UPDATE: Council OKs Seattle City Light Bid to Explore Joining EIM
The Seattle City Council authorized Seattle City Light to conduct a cost-benefit analysis on joining the Western Energy Imbalance Market (EIM).
CAISO Board Approves Broader LSE Definition
The CAISO Board of Governors voted to expand the definition of a “load-serving entity” to include the San Francisco BART and other organizations.
PacifiCorp Increases Share of EIM Benefit in Q3
PacifiCorp reaped well more than half the $26.16 million in gross benefits yielded by the Energy Imbalance Market (EIM) in the third quarter, CAISO said.
FERC Denies Rehearing on SDGE Abandonment Incentive
FERC denied San Diego Gas & Electric’s (SDG&E) request for rehearing of an order that limited the amount the utility can be reimbursed.

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