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April 14, 2026

CAISO Extended Day-Ahead Market (EDAM)

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EDAM Utilities Seeking Stakeholder Input on RA Program
The group developing a new resource adequacy program for non-CAISO members of the ISO’s Extended Day-Ahead Market is soliciting stakeholder participation to develop a proposal.
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EDAM May 1 Launch on Track Despite Data Challenges
CAISO’s Extended Day-Ahead Market is on schedule to launch May 1 with PacifiCorp as its first participant, as the new market goes through a third and final phase of parallel operations testing before starting.
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FERC Approves CAISO EDAM ‘Transitional’ Intertie Proposal
FERC approved a series of revisions related to the design of CAISO’s Extended Day-Ahead Market to support market implementation and avoid disruptions to existing contracts.
PGE
PGE Asks Oregon PUC to Approve $1.9B PacifiCorp Deal
Portland General Electric has asked the Oregon Public Utility Commission to approve its proposed $1.9 billion purchase of PacifiCorp’s Washington assets, saying the deal paves the way for continued investments in the Pacific Northwest.
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BPA’s Draft Markets+ Decision Reignites Day-ahead Debate
The Bonneville Power Administration’s draft decision “solidifying” its day-ahead market choice in favor of SPP’s Markets+ has reignited a yearslong debate over the agency’s direction.
Western Energy Markets
Nevada Regulators Approve NV Energy’s EDAM Entry
The Public Utilities Commission of Nevada voted to approve NV Energy’s application to join CAISO’s Extended Day-Ahead Market — a move that some stakeholders view as a pivotal moment for Western electricity markets.
WW Clyde
Draft Nevada PUC Order Would Allow NV Energy to Join EDAM
A draft order from the Public Utilities Commission of Nevada signals that the commission is likely to approve NV Energy’s participation in CAISO’s Extended Day-Ahead Market.
Balise42, CC BY-SA 4.0, via Wikimedia Commons
CAISO Monitor Seeks Speedy Replacement of Interim EDAM Congestion Revenue Approach
CAISO’s Department of Market Monitoring urged the ISO to replace its interim congestion revenue allocation rules under its forthcoming Extended Day-Ahead Market “as soon as practicable.”
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An Electricity Market That’s Bigger Than the Weather
The size and configuration of day-ahead markets in the West will greatly impact electricity bills and grid reliability, says the Environmental Defense Fund.
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‘Widespread Support’ for CAISO’s $8.5M ROWE Funding Plan
CAISO is moving toward approval of an $8.5 million financing plan for the Regional Organization for Western Energy’s start-up costs.

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