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March 14, 2026

Markets+

U.S. Army Corps of Engineers
BPA Releases Draft Decision Solidifying Markets+ Choice
BPA released its draft proposed decision to join SPP’s Markets+, saying that preparations have advanced to a point where it can “move forward with implementation and propose joining Markets+ in October 2028.”
© RTO Insider 
EDAM Governance Questioned During NV Energy Hearing
As Nevada regulators consider NV Energy's request to join CAISO's Extended Day-Ahead Market, the debate over the independence of EDAM's governance is intensifying.
© RTO Insider 
California’s Anxiety is not About Seams; It’s About Control
For the first time in years, California’s grip on Western market design is genuinely at risk, writes Nick Myers of the Arizona Corporation Commission.
© RTO Insider 
Top CAISO, SPP Executives Talk Competition and Collaboration
Conversations remained cordial despite the ongoing competition between CAISO and SPP in the west as the RTOs’ top executives took the stage at Yes Energy’s annual EMPOWER conference.
Grant County PUD
SPP Secures 2 More Commitments for Markets+ in Washington

SPP has secured two new commitments for its day-ahead Markets+, as Grant County Public Utility District and Tacoma Power in Washington state announced their intent to join.

Aurora Energy Research
APS Would See Greater Savings in EDAM, Analysis Finds
Arizona Public Service would save $110 million/year by joining CAISO's Extended Day-Ahead Market rather than SPP's Markets+, a new analysis found.
Bonneville Power Administration
Nonprofits Tell 9th Circuit BPA’s Day-Ahead Market Decision Poses ‘Imminent’ Harm
The consequences of the Bonneville Power Administration’s decision to join SPP’s Markets+ could hit the Northwest sooner rather than later even though the agency has yet to formally join the market, a group of nonprofits suing it over the choice told the 9th U.S. Circuit Court of Appeals.
Western Energy Markets
Caution Urged as Regulators Consider NV Energy’s Request to Join EDAM
Some parties are urging Nevada regulators to wait until initial results are in for CAISO's Extended Day-Ahead Market before deciding whether to allow NV Energy to join.
Pattern Energy
Western Market Seams Complicate Data Center, Clean Energy Investments, Panelists Say
As the West appears to move toward two separate day-ahead markets, data center developers like Google and clean energy companies are investing with the intent to mitigate seams and ensure operational consistency, panelists at an Advanced Energy United webinar said.
JIRSA Hedrick
Colo. PUC Sticks with Approval of Markets+ for PSCo
Colorado regulators have declined to reconsider their decision finding that it would be in the public interest for Public Service Company of Colorado to join SPP’s Markets+.

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