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December 26, 2025

California Independent System Operator (CAISO)

CAISO
CAISO Bid for Western RTO to Face Competition in 2018
The Energy Imbalance Market (EIM) expanded its footprint and ambitions in 2017 while new suitors lined up to compete with CAISO as the vehicle for a Western RTO.
Southern California Edison
FERC Sets Hearing on SCE Tx Rates; Glick Dissents
FERC ordered hearing and settlement proceedings on Southern California Edison’s proposal to revise its transmission formula rate.
‘Load Bias,’ Prices Rise in CAISO Q3
CAISO’s Department of Market Monitoring discussed the ISO’s third-quarter market results with participants.
CAISO
CAISO 2030 Vision Gets Mixed Reviews
Operators of traditional resources say the Vision 2030 paper drifts outside CAISO’s purpose of assuring reliability and managing markets.
CPUC Targets Wildfires, Multifamily Solar, RMRs
California regulators have approved new measures aimed at the prevention of wildfires, as utilities face growing scrutiny.
CAISO Board OKs New Generator Rules, Budget
CAISO’s Board of Governors approved new generator contingency modeling, rules extending time for generator interconnections and EIM enhancements.
Montana PURPA Solar Saga Continues in State Court
Three solar advocates filed a joint challenge to the Montana PSC’s decision to alter the contract terms available to small generators under PURPA.
CAISO Plan Extends Day-Ahead Market to EIM
CAISO is floating a proposal that would extend many of the features of its day-ahead market into the footprint of the EIM.
CAISO
Tight Supplies, Solar Ramps Drive CAISO Summer Spikes
CAISO day-ahead prices hit all-time highs for the second time this year during the third quarter, the ISO’s Department of Market Monitoring said.
© RTO Insider
California Proposes Resource Adequacy Obligations for CCAs
California regulators are set to vote next month on a proposal that CCAs be subject to the resource adequacy requirements of electric utilities.

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