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December 19, 2025

EDAM

Powerex
Powerex Paper Sparks Dispute over EDAM ‘Design Flaw’
The new paper from Powerex is likely to reignite the debate between supporters of CAISO’s Extended Day-Ahead Market and SPP’s Markets+ just as the competition between the two markets approach critical junctures.
© RTO Insider LLC 
CAISO EDAM Pioneers Share Implementation Details
With go-live dates for its first two participants looming in May and October of next year, implementation activities for CAISO’s EDAM are ramping up.
Wyoming Business Council
Pathways ‘Step 2’ Plan Elicits Praise, Concerns — and Advice
A workshop on the West-Wide Governance Pathways Initiative has sparked praise for the proposal as well as concerns, including uneasiness over plans to share staffing between CAISO and a new regional organization that would govern Western electricity markets.
© RTO Insider LLC
Day-ahead Seams Issues Could Take Years to Resolve, BPA Staff Says
BPA would have to strike several types of agreements, many of which are complex and could take years to implement, to tackle seams that could arise if BPA joins a day-ahead market, agency staff said during a workshop.
© RTO Insider LLC
BPA Considers Impact of Fees in Day-ahead Market Choice
BPA could face high implementation fees and operating costs under both SPP’s Markets+ and CAISO’s EDAM, but exact amounts are in flux.
CAISO
FERC Approves CAISO’s SWIP-North Development Agreement
FERC approved an agreement between CAISO and LS Power to develop a transmission line that would deliver Idaho wind power into California and could help secure Idaho Power’s participation in the ISO’s Extended Day-Ahead-Market.
California Natural Resources Agency
CEC Workshop to Focus on Impact of Pathways Initiative
The California Energy Commission will hold a workshop to discuss the West-Wide Governance Pathways Initiative, signaling the state may consider a proposal to alter CAISO’s governance structure to accommodate broader concerns about the ISO’s lack of independence from politics.
© RTO Insider LLC
Benefits of Fast-start Pricing Questionable, CAISO DMM Says
Establishing a fast-start pricing mechanism in CAISO and the WEIM is complex and brings few benefits compared to other potential market enhancements, the ISO's Department of Market Monitoring said.
Bonneville Power Administration
In Letter to Senators, BPA Tempers Markets+ Leaning
The Bonneville Power Administration tamped down expectations that it is all in on SPP’s Markets+, clarifying in a recent letter to lawmakers representing Oregon and Washington that it’s still weighing the pros and cons of joining a day-ahead market.
The Bonneville Power Administration
BPA Market Decision on Track Despite Calls for Delay
BPA remains on track to issue a decision on which day-ahead market to join by May 2025 despite calls to delay it until fall 2025 to give the agency more time to reconsider its leaning toward SPP’s Markets+.

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