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March 4, 2026

CAISO Extended Day-Ahead Market (EDAM)

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Top CAISO, SPP Executives Talk Competition and Collaboration
Conversations remained cordial despite the ongoing competition between CAISO and SPP in the west as the RTOs’ top executives took the stage at Yes Energy’s annual EMPOWER conference.
Aurora Energy Research
APS Would See Greater Savings in EDAM, Analysis Finds
Arizona Public Service would save $110 million/year by joining CAISO's Extended Day-Ahead Market rather than SPP's Markets+, a new analysis found.
Bonneville Power Administration
Nonprofits Tell 9th Circuit BPA’s Day-Ahead Market Decision Poses ‘Imminent’ Harm
The consequences of the Bonneville Power Administration’s decision to join SPP’s Markets+ could hit the Northwest sooner rather than later even though the agency has yet to formally join the market, a group of nonprofits suing it over the choice told the 9th U.S. Circuit Court of Appeals.
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CAISO Unveils Principles for Western Seams Coordination
CAISO released a set of guiding principles for upcoming discussions about seams between the ISO, SPP and other entities as the Extended Day-Ahead Market nears its opening in May.
Shutterstock
FERC Eliminates Western ‘Soft’ Price Cap
FERC has rescinded the West-wide wholesale electricity price cap mechanism it implemented in response to widespread price manipulation during the Western energy crisis of 2000/01, saying development of new markets and expanded authority has led to improved monitoring capabilities.
Western Energy
Pathways’ ROWE Selects Interim Leaders
The Regional Organization of Western Energy selected Western Freedom Executive Director Kathleen Staks as its interim president, while regulatory attorney Lisa Tormoen Hickey will assume the role of interim secretary.
CAISO
Collaboration, Engagement Key for CAISO’s Elliot Mainzer
Elliot Mainzer said working at BPA taught him two critical lessons that he's applied at CAISO: the importance of "robust stakeholder engagement" and "collaborative working relationships."
Western Energy Markets
Caution Urged as Regulators Consider NV Energy’s Request to Join EDAM
Some parties are urging Nevada regulators to wait until initial results are in for CAISO's Extended Day-Ahead Market before deciding whether to allow NV Energy to join.
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EDAM Town Hall Highlights ‘Pivotal Moment for the West’
CAISO leaders staged a virtual “town hall” to stress the importance of a smooth rollout to the ISO’s Extended Day-Ahead Market in May and promise to address market seams issues.
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Pathways Asks CAISO to Kickstart ROWE Funding Discussions
The West-Wide Governance Pathways Initiative’s Launch Committee asked CAISO to initiate a stakeholder process to create a funding mechanism for the newly incorporated organization that is slated to assume governance over the ISO’s energy markets.

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