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December 5, 2025

CAISO/WEIM

The California Independent System Operator serves about 80% of California's electricity demand, including the service areas of the state's three investor-owned utilities. It also operates the Western Energy Imbalance Market, an interstate real-time market covering territory that accounts for 80% of the load in the Western Interconnection.
Tri-State Generation and Transmission Association
West Needs Unified IBR Approach, WIRAB Says
Western state utility commissioners should encourage “standardization and harmonization” to effectively integrate inverter-based resources throughout the region, according to a guide developed by WIRAB and Elevate Energy Consulting.
CAISO
CAISO Ponders DER Market Participation in New Paper
A new CAISO paper lays out a series of challenges around how to improve participation of demand response and distributed energy resources in the ISO's day-ahead and real-time markets.
© RTO Insider LLC
Pathways’ ROWE Could Offer Western RA Program, PGE Says
The West-Wide Governance Pathways Initiative could lead the charge on developing an alternative to the Western Resource Adequacy Program that would integrate with CAISO’s Extended Day-Ahead Market, according to co-Chair Pam Sporborg.
PJM
Report Examines Interconnection Queue Rationing Efforts
A new report examines CAISO, MISO, PJM and SPP efforts to accelerate interconnection and concludes that while some may succeed in speeding generation additions, some sacrifice fairness, transparency and open-access principles.
© RTO Insider LLC
FERC OKs Extension of WEIM Assistance Energy Transfer Feature
FERC granted CAISO's request to remove the sunset date on the Western Energy Imbalance Market Assistance Energy Transfer feature, which has been used by more than 10 of the market’s balancing area authorities in recent years.
© RTO Insider 
FERC Report Urges West to Address Looming Market Seams Issues
A new FERC report adds to the growing body of work showing the complexity of confronting the seams issues likely to arise between the West’s two day-ahead markets when compared with challenges at the borders between RTOs and ISOs in the Eastern U.S.
© RTO Insider LLC
FERC Mostly Accepts Calif. IOUs’ Order 2023 Compliance Filings
FERC largely approved compliance filings by three California investor-owned utilities related to interconnection queue requirements.
Burbank Water and Power
Avoiding Bunker Fuel: CEC OKs 54 MW of Additional Gas Generation in Burbank
The CEC approved a request to increase the output of a Burbank gas-fired power plant to address grid reliability issues, prompting some organizations and locals to protest out of concerns about the facility's emissions and costs.
Northwest Power and Conservation Council
NWPCC Study Finds Market Availability Steady Across Different Scenarios
The buildout of new resources in the Western Interconnection over the next 20 years is “remarkably similar” across a variety of scenarios tested by NWPCC’s market availability study.
PacifiCorp
PacifiCorp Staffs Up Ahead of EDAM Launch
PacifiCorp is hiring additional employees to prepare for CAISO’s Extended Day-Ahead Market next year, with staff expecting the launch will bring a few “scratches and bruises.”

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