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December 19, 2025

EDAM

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Puget Sound Energy Inks Agreement to Join Markets+

Puget Sound Energy said it is joining Markets+, marking another win for SPP shortly after the Bonneville Power Administration issued its final market policy in favor of the day-ahead market.

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BPA Chooses Markets+ over EDAM
Bonneville's final record of decision will come as little surprise to those who’ve been following market developments in the West.
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Panel Explores How Western Markets Have ‘Played off’ Each Other
In the competition between two Western day-ahead markets — CAISO’s EDAM and SPP’s Markets+ — the two market operators have “sort of played off one another,” an industry observer said during a panel.
CAISO
CPUC, Others Question Details of EDAM Congestion Revenue Proposal
Stakeholders and state energy officials continue to raise concerns about a draft proposal that would adjust how congestion revenues are allocated in CAISO's EDAM, with the ISO aiming for a vote on the final plan in the coming weeks.
CAISO
CAISO Issues ‘Expedited’ Plan for Allocating EDAM Congestion Revenues
CAISO released a draft final proposal detailing how EDAM will allocate congestion revenues in circumstances when a transmission constraint in one BAA produces “parallel” flows in a neighboring BAA also participating in the market.
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CAISO Pauses Study of New Market Run Proposal for Gas Resources

CAISO sidelined a proposal to provide an additional market run for gas resources due to a lack of information on the subject and a need for operational experience with the ISO’s Extended Day-Ahead Market.

CAISO
Urgent EDAM Congestion Revenue Issue ‘Will Take Time’ to Address
The complex issue regarding congestion revenue allocation in CAISO’s Extended Day-Ahead Market continues to raise questions and cause some confusion for market participants.
© RTO Insider
BPA Flooded with Comments on Draft Day-ahead Market Decision
The Bonneville Power Administration elicited nearly 150 comments in response to the draft policy outlining its decision to join SPP’s Markets+ rather than CAISO’s Extended Day-Ahead Market.
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EDAM Congestion Debate Builds Even as CAISO Moves to Address Issue
The dispute over how CAISO’s Extended Day-Ahead Market will allocate congestion revenues to market participants continues, even as the ISO moves to address stakeholder concerns.
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CAISO CEO, Others Point to Reliability Aspect of BPA’s Market Decision
BPA's day-ahead market decision will have “major reliability and affordability impacts” on electricity customers in the Northwest and across the West, CAISO CEO Elliot Mainzer told the ISO’s Board of Governors

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