February 24, 2025

CAISO Extended Day-Ahead Market (EDAM)

WECC
26 Western Entities Signal Continued Support for Markets+
More than two dozen Western electricity sector entities sent a letter to SPP expressing support for the continued development of the RTO’s Markets+, which is competing for participants with CAISO’s Extended Day-Ahead Market. 
CAISO
Nevada RTO Proceeding Examines EDAM, Markets+ Design

Two competing day-ahead markets from CAISO and SPP are taking different approaches to resource sufficiency and adequacy, according to presenters at a workshop included in a regulatory effort to help inform NV Energy’s decision on which market to join.

West-Wide Governance Pathways Initiative
Western RTO Group Floats Independence Plan for EDAM, WEIM
Backers of an initiative to create an independent Western RTO that builds on CAISO’s markets have floated a plan to untangle the snag that’s hung up past efforts to “regionalize” the ISO: a lack of independent governance.
Brattle Group
Nev. RTO Effort Turns Focus to NV Energy Day-ahead Studies
A key factor in the CAISO EDAM advantage is the benefits the utility would lose by leaving the Western Energy Imbalance Market, a Brattle Group consultant said.
© RTO Insider LLC
BPA Staff Recommends Markets+ over EDAM
The Bonneville Power Administration released a much anticipated staff report that tentatively recommends the agency choose SPP’s Markets+ over CAISO’s Extended Day-Ahead Market.
© RTO Insider LLC
CAISO’s EDAM Scores Key Wins in Contested Northwest
CAISO scored simultaneous victories in heavily contested territory after Portland General Electric and Idaho Power both signaled their intent to join the Extended Day-Ahead Market.
CAISO
CAISO, Stakeholders Consider 2 GHG Mechanisms for EDAM

CAISO stakeholders and staff could soon be weighing two options for enabling the EDAM to track GHGs in a way that accommodates the patchwork of different carbon reduction programs across Western states.

West-Wide Governance Pathways Initiative
Pathways Initiative Discloses Funders, Reiterates Goals
The West-Wide Governance Pathways Initiative has secured commitments of financial support from 24 utilities and other electricity-sector organizations and expects that list to grow.
© RTO Insider LLC
Colorado PUC Sets Rules for Electricity Market Participation
The Colorado Public Utilities Commission has proposed rules that would govern how it will review applications from utilities wishing to join the various regional markets being developed in the Western Interconnection.
Powerex
Powerex Report Expands NW Cold Snap Debate

A new report from electricity marketer Powerex adds to the expanding debate around what transpired on the Western grid during a January cold snap that saw the Northwest forced to import large volumes of power.


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