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December 7, 2025

Southwest Power Pool (SPP)

Potomac Economics
Crypto Load on MISO-SPP M2M Constraint Draws Complaint from Montana-Dakota Utilities
Montana-Dakota Utilities filed a complaint against MISO and SPP over a market-to-market flowgate chronically congested by a new cryptocurrency mining operation in SPP.
Entergy
SPP Markets and Operations Policy Committee Briefs: Jan. 16-17, 2024
SPP stakeholders have approved congestion-hedging implementation policies six years in the making that had some likening it to Groundhog Day.
© RTO Insider LLC
FERC Partly Grants Challenges to AEP Rates

FERC partially granted two challenges arguing that AEP subsidiaries in SPP and PJM had not properly reflected the benefits of filing consolidated tax returns in their 2021 formula rates.

AEP Transmission
Appeals Court Rejects Review of AEP Transmission Rates
The D.C. Circuit Court of Appeals has rejected four Texas cooperatives’ request to review a 2019 FERC decision over AEP's transmission rates.
Office of Texas Governor Greg Abbott
ERCOT Appeals for Conservation as Winter Roars in
ERCOT and SPP are dealing with an Arctic blast that's brought subfreezing temperatures to much of the Great Plains and Texas.
© RTO Insider LLC
Conditions Finally Reverted to (Somewhat) Normal for SPP in 2023
SPP chalked up numerous successes during 2023 without the effects of a global pandemic or severe winter storms.
SPP
SPP Adds New Security Officer to Leadership Team
SPP named Felek Abbas as its chief security officer to oversee the RTO’s cyber and physical security, emergency management, and business continuity.
© RTO Insider LLC
West Entered Pivotal Period for RTO Development in 2023

Future historians of the U.S. electricity sector one day might conclude the development of an RTO in the West hinged on two separate but interrelated events occurring on one day in July 2023.

Basin Electric Power Cooperative
DC Circuit Rejects LES Appeal on FERC Order
A federal appeals court rejected Lincoln Electric System’s request to review a FERC decision turning down the utility’s request to recover costs from its investment in a Wyoming generating facility.
© RTO Insider LLC
IMIP Approves SPP Markets+ Governance Tariff Language
SPP’s Markets+ senior leadership approved the day-ahead market’s proposed governing document, a significant milestone in the drive to file a tariff with FERC in early 2024.

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