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December 5, 2025

CAISO Extended Day-Ahead Market (EDAM)

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PacifiCorp Asks WPP to Delay WRAP ‘Binding’ Phase Commitment Date
PacifiCorp asked the WPP’s Board of Directors to allow WRAP participants to defer their decision to commit to the program’s binding phase by at least one year.
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WRAP ‘Binding’ Phase Set for Winter 2027/28 After Utilities Affirm Commitment
The Western Power Pool’s WRAP secured enough participants for the program to enter the first binding phase after 11 utilities reaffirmed their commitment.
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Pathways to Engage Broad Set of Stakeholders to Select Independent RO Board
The West-Wide Governance Pathways Initiative soon will begin the nomination process to select the initial board of the independent regional organization that will govern CAISO’s energy markets.
CAISO
DER Representatives Get a Seat at the Pathways Table
A wide variety of stakeholders — including representatives of the DER sector — will serve as advisers to the Pathways Initiative as it enters its next phases.
Western Energy
New Challenges Await Pathways After Success in Calif. Legislature
With California passing the bill designed to transition the governance of CAISO’s markets to an independent regional organization, new challenges await the West-Wide Governance Pathways Initiative as the coalition seeks to turn a once-elusive goal into reality.
Office of Assemblymember Cottie Petrie-Norris
Pathways Bill Passes Calif. Legislature in Lopsided Votes
California lawmakers have passed a landmark bill that will allow CAISO to transition the governance of its markets to the independent “regional organization” envisioned by the West-Wide Governance Pathways Initiative.
CAISO
WEIM Prices Rise on Higher Gas Costs in Q2 2025
Western Energy Imbalance Market prices increased sharply in the second quarter of 2025 compared with the same period in 2024, mostly due to higher natural gas prices at Western hubs.
CAISO
CAISO Price Formation Proposal Looks to Reduce ‘Unnecessary’ Market Mitigation

After years in the making, CAISO released a price formation proposal intended to reduce “unnecessary” market power mitigation, strengthen reliability and provide consistent pricing incentives in the WEIM and future EDAM.

Office of Sen. Jeff Merkley
West Coast Senators Urge Passage of Calif. Pathways Bill
Six Western U.S. senators came out in support of the California legislation needed to transform CAISO’s market into an independent regional energy market, saying in a letter to Gov. Gavin Newsom the bill promises "improved grid reliability and significant energy cost savings.”
McGranahan Architects
WEIM Emissions Attribution Rules Apply to EDAM, Wash. Agency Clarifies
Washington’s Ecology Department clarified that cap-and-invest rules that apply to CAISO’s Western Energy Imbalance Market also will cover the ISO’s Extended Day-Ahead Market when it begins operations in 2026.

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