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December 19, 2025

EDAM

PacifiCorp
CAISO Approves New EDAM Congestion Revenue Allocation Design
CAISO's Board of Governors and the Western Energy Markets Governing Body approved a new method for allocating certain congestion revenues in the ISO's Extended Day-Ahead Market, set to launch in 2026
Seattle City Light
Former Seattle City Light CEO Nominated for WEM Governing Body

Former Seattle City Light CEO Debra Smith has been nominated to join the Western Energy Markets (WEM) Governing Body, with a three-year term to begin July 1. 

Shutterstock
UPDATED: ‘Pathways’ Bill Passes California Senate on 36-0 Vote

A California bill to implement the West Wide Governance Pathways Initiative’s Step 2 proposal passed the state Senate in a unanimous vote.

© RTO Insider 
CAISO EDAM Congestion Revenue Proposal Gains Support

Many stakeholders are now supporting CAISO’s proposed new method for allocating congestion revenues in EDAM after months of workshops and multiple proposals.

Aurora Energy Research
Study Finds PSCo Would Gain More in EDAM than Markets+
The study, conducted by Aurora Energy Research, found EDAM could provide the Denver-based utility $11.2 million more in average annual savings from 2028 to 2040 compared with Markets+, rising to $13.2 million through 2060.
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.
Shutterstock
California’s ‘Pathways’ Bill Heading to Senate Floor

A California bill to implement the West Wide Governance Pathways Initiative’s Step 2 proposal is headed to the floor of the state Senate after being approved by the body’s Appropriations Committee.

CAISO
CAISO Postpones EDAM Congestion Revenue Decision
CAISO delayed its final decision on how to allocate congestion revenues in its Extended Day-Ahead Market after receiving comments from stakeholders asking for more analysis.
Shutterstock
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.

© RTO Insider 
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.

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