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December 26, 2025

California Independent System Operator (CAISO)

SCE
UPDATED: California Fires Spark CAISO Transmission Emergency
CAISO extended an electric transmission emergency in Ventura County because of raging wildfires in Southern California.
PJM Unit to Help Develop Western Markets
PJM and reliability coordinator Peak Reliability announced Thursday they will explore the development of electric markets and other services in the West.
EIM Governing Body Approves ‘Consolidated’ Initiatives
The EIM Governing Body approved a set of market initiatives that represents a narrowed-down version of a package CAISO had proposed.
SoCalGas Pipeline Losses Spur Curtailment Warnings
The loss of three natural gas pipelines is creating major concerns about Southern California’s gas and electricity supplies.
© RTO Insider
Hydro, Jointly Owned Coal Face EIM Challenges
Speakers at a CAISO Regional Issues Forum discussed their approach to effectively integrating hydropower, coal and jointly owned plants into the EIM.
California Governor's Office of Emergency Services
Thumbs Up/Down for CAISO Gas Constraint Measures
FERC approved CAISO’s request to extend temporary market measures instituted last year in response to the closure of Aliso Canyon.
Calpine
PGE, CAISO Protest Calpine RMR Terms
CAISO and PG&E are opposing the terms of a reliability-must-run (RMR) agreement for 2 California natural gas-fired plants that Calpine submitted with FERC.
Probe Reveals More CPUC-PG&E Contacts on Pipeline Blast
California ethics officials have obtained new evidence of apparent back-channel communications between PG&E and the state Public Utilities Commission.
California PUC, Customers Fight SCE Rate Hike
State regulators and transmission customers of Southern California Edison urged FERC to reject the utility’s requested rate hike for 2018.
FERC Affirms WestConnect Cost Allocation Ruling
FERC upheld a previous ruling covering Order 1000 cost allocation in the WestConnect planning region, adding further explanation of its reasoning.

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