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December 28, 2025

California Independent System Operator (CAISO)

CAISO Board OKs Metering, EIM Governance
The Western Energy Imbalance Market featured prominently in two proposals approved by the CAISO Board of Governors during its Dec. 15 meeting.
CAISO Board OKs 2017 Budget with Steady Revenue Requirement
The CAISO Board of Governors approved a 2017 budget that includes a $4.3 million increase in spending but no corresponding rise in revenue requirement.
CPUC Orders Renegotiation of San Onofre Settlement
The California PUC ordered Southern California Edison and San Diego Gas & Electric to meet with groups opposed to the commission’s 2014 settlement
Seattle City Light Signs EIM Membership Agreement
Seattle City Light has signed an agreement with CAISO to begin participating in the Western Energy Imbalance Market in April 2019.
CAISO to Rely on New Emergency Measure to Ease Path 26 Transfers
CAISO said it will take advantage of a recently approved system reliability measure when Aliso Canyon gas pipeline restrictions constrain output.
Increased Transfer Capacity Reducing EIM Congestion
Increased transfer capacity is keeping a lid on congestion in the EIM and limiting participants’ ability to wield market power, according to CAISO’s IMM.
CAISO Refines Small TO Generator Interconnection Plan
CAISO has narrowed the scope of a generator interconnection plan that seeks to protect smaller transmission owners from disproportionately high costs.
CAISO Monitor Proposes Fixes for EIM Market Power Concerns
The CAISO internal Monitor is proposing new enforcement measures to address market power concerns in the Energy Imbalance Market.
EIM Leaders OK Governance ‘Guidance’ Proposal
The Western Energy Imbalance Market governing body voted to implement procedures to ensure market participants have input into CAISO policy initiatives.
UPDATE: CAISO Monitor Proposes End to Revenue Rights Auction
The CAISO internal Market Monitor reported that the program for auctioning off congestion revenue rights suffers from inherent design flaws.

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