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January 10, 2026

PacifiCorp

The Imperial Irrigation District
Imperial Irrigation District Inks Agreement to Join CAISO Markets
CAISO said the Imperial Irrigation District has signed implementation agreements and will begin participating in the WEIM and EDAM in 2028.
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Turlock Irrigation District to Join EDAM in 2027

California-based Turlock Irrigation District has agreed to join CAISO’s Extended Day-Ahead Market in 2027.

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CAISO, PacifiCorp, PSCo All Close on Order 2023 Compliance

FERC partially approved three entities' Order 2023 compliance filings, directing them to address mostly minor — but a few substantive — issues in their submissions.

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Debate Lingers After BPA Day-ahead Market Decision
Though BPA removed any uncertainty by selecting SPP’s Markets+ over CAISO’s EDAM, the debate over whether BPA made the right choice likely will heat up as the West confronts a split into two major markets.
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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Western Utilities Prep for Wildfire Season with New Initiatives, Tech
Utilities in the West are gearing up for another wildfire season, equipped with new technology and lessons learned from recent fires in Los Angeles they hope can assist in mitigation work.
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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.
CAISO
Fast-paced Effort will Address EDAM Congestion Revenue Issue
CAISO launched an “expedited” initiative to address stakeholder concerns about how EDAM will allocate congestion revenues when a transmission constraint in one balancing authority area causes congestion in a neighboring BAA.
Seattle City Light
Seattle City Light, Others Urge BPA to Pause Day-ahead Decision
The Bonneville Power Administration should remain in CAISO’s WEIM and hold off on joining a day-ahead market, Seattle City Light and other Northwest parties urged in a letter sent to BPA CEO John Hairston.
Powerex
Powerex Paper Sparks Dispute over EDAM ‘Design Flaw’
The new paper from Powerex is likely to reignite the debate between supporters of CAISO’s Extended Day-Ahead Market and SPP’s Markets+ just as the competition between the two markets approach critical junctures.

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