SPP

The Southwest Power Pool is a regional transmission organization that coordinates the reliability of the transmission system and balances electric supply and demand in all or parts of Arkansas, Colorado, Iowa, Kansas, Louisiana, Minnesota, Missouri, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas and Wyoming.
SPP
SPP MOPC Passes Revised Large Load Policy
SPP stakeholders have approved a revised version of the grid operator’s fast-track study to integrate high-impact large loads during a special virtual meeting of the Markets and Operations Policy Committee.
SPP
FERC Approves SPP’s Separate Winter, Summer PRMs
FERC has approved SPP’s tariff revision that establishes separate planning reserve margins for the summer and winter seasons, saying it will provide “more granularity” by recognizing the reliability differences between the two seasons.
NorthWestern Energy
Black Hills-NorthWestern Merger Could Reshape Western Market Map

The proposed merger between Black Hills Corp. and NorthWestern Energy likely will reshape the map in the competition between CAISO’s Extended Day-Ahead Market and SPP’s Markets+ — but it’s still too early to know where new boundaries will be drawn.

© RTO Insider
SPP, Stakeholders Kick off Markets+ Phase 2 Development
The development of SPP's Markets+ has picked up the pace with stakeholders agreeing on an interim governance structure and representation on the working groups that will handle much of the effort ahead.
Aurora Energy Research
Report Urges 5-GW Battery Storage Buildout in SPP
A new report urges SPP to accelerate its interconnection process and reform market rules to allow greater buildout of energy storage.
DOE
BPA Supported by Trade Orgs in Suit over Day-ahead Market Decision
Trade organizations for utilities and large energy consumers seek to intervene in the lawsuit filed in the 9th Circuit Court of Appeals challenging the Bonneville Power Administration’s decision to join SPP’s Markets+ instead of CAISO’s EDAM.
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SPP Board of Directors/Members Committee Briefs: Aug. 5, 2025
SPP approved its seventh competitive project under FERC Order 1000, a 19-mile, 115-kV new transmission line with an estimated cost of $45.5 million in the Texas-New Mexico area.
© RTO Insider 
SPP Board Sets Aside 765-kV Costs, Large Load Policy
SPP’s Board of Directors agreed to defer action on a 765-kV transmission project with a ballooning cost estimate and staff’s large load integration policy, both the source of much stakeholder discussion.
ITC Holdings
FERC Approves SPP Change to IC Interim Service
FERC approved an SPP tariff change that allows interconnection customers without a pending request to ask for interim service when the study cluster’s window is closed.
© RTO Insider 
SPP Regional State Committee Briefs: Aug. 4, 2025

SPP state regulators have approved a policy that sets criteria for developing joint transmission projects with other RTOs to cost-effectively address persistent market-to-market (M2M) congestion.


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