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December 5, 2025

California Independent System Operator (CAISO)

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.
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‘Frustrated’ CDWR Requests CAISO Reconsider Tx Access Charge Proposal
The California Department of Water Resources and other parties have asked CAISO to restart a transmission access charge initiative that was put on hold in 2018 due to the development of the ISO’s Extended Day-Ahead Market.
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.
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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.
CAISO
Market Monitor Urges CAISO to Reconsider EDAM Intertie Proposal
CAISO's Department of Market Monitoring has asked the ISO to re-evaluate its intertie scheduling proposal for the Extended Day-Ahead Market due to potential impacts on market participants.
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FERC Denies CAISO OATT Interconnection Rehearing Request

FERC denied rehearing requests regarding approved revisions to CAISO’s Open Access Transmission Tariff generator interconnection procedures, which contesting parties said rely on in part on “subjective and discriminatory criteria.”

CAISO
EDAM Intertie Scheduling Processes Raise Stakeholder Concerns
At one of the most well attended workshops of the year, CAISO staff described new processes for scheduling intertie resources and resource adequacy imports in EDAM.
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CAISO Board Approves 2 Key RA Program Proposals
CAISO’s Board of Governors approved two proposals intended to improve how the ISO calculates resource adequacy values and tracks RA supply.
CAISO
Analysis Finds ‘Material’ Parallel Flow Effects in CAISO from PacifiCorp BAA Transactions
In an ongoing high-stakes analysis, CAISO has determined that transactions between PacifiCorp’s two balancing authority areas can “materially” affect parallel flows on certain CAISO transmission constraints.
CAISO
‘Aggressive’ EDAM Schedule ‘Going Smoothly’ for PacifiCorp, PGE

PacifiCorp and Portland General Electric remain on track to join CAISO’s Extended Day-Ahead Market on their planned entry dates, although the schedule remains “very tight and very aggressive."


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