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December 5, 2025

The Brattle Group

The Brattle Group
NM Regulators Poke Assumptions Behind EPE’s Markets+ Choice
A recent study that contributed to El Paso Electric’s decision to join SPP’s Markets+ rather than CAISO’s Extended Day-Ahead Market has raised questions among New Mexico regulators.
El Paso Electric
EPE’s Markets+ Decision ‘Not Transparent,’ NM Regulators Say

A New Mexico Public Regulation Commission workshop aimed to restore trust between the commission and El Paso Electric after the utility’s surprise announcement in January that it planned to join SPP’s Markets+.

Camano Island Chamber of Commerce
7th ‘Issue Alert’ Highlights Markets+ Footprint
Proponents of SPP’s Markets+ argued in their last “issue alert” that the day-ahead market option provides a robust footprint with “exceptional generation and load diversity” across the region while also claiming recent warnings about its seam with CAISO’s EDAM are overblown.
Brattle Group
Study Finds Considerable ‘Grid Flexibility’ Potential in New York
A Brattle Group study found that New York could achieve 8.5 GW in “grid flexibility” measures by 2040, saving consumers more than $2 billion a year.
© RTO Insider LLC 
Pathways ‘Step 2’ Bill Sets Conditions for EDAM Governance
The language for the proposed bill to implement “Step 2” of the West-Wide Governance Pathways Initiative stipulates the conditions under which CAISO and California utilities can participate in energy markets governed by an independent regional organization.
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.
The Brattle Group
Brattle Study Shows Big Benefits for California in ‘Expanded’ EDAM
California ratepayers would save millions more in a CAISO Extended Day-Ahead Market encompassing nearly all the West than in one that includes only those utilities likely to join the market, according to a new Brattle Group study.
Shutterstock
El Paso Electric to Join SPP’s Markets+ in 2028
El Paso Electric says it will join SPP’s regional day-ahead Markets+ service offering in a “strategic move … tailored” to meet expected customer load growth and evolving needs.
Bonneville Power Administration
BPA Touts Markets+ in Response to Seattle City Light Opposition
The Bonneville Power Administration continued to argue that SPP’s Markets+ is preferable to CAISO’s EDAM, stating in a letter to Seattle City Light that potential benefits of a single West-wide market footprint must be viewed with “significant skepticism."
 © RTO Insider LLC
BPA Has not Made ‘Business Case’ for Markets+, NW Senators Say
The four U.S. senators representing Oregon and Washington contend BPA has failed to make a financial case for joining Markets+, a condition they say should be the key driver of the agency’s decision to participate in a Western day-ahead market.

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