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December 21, 2025

Southwest Power Pool (SPP)

NYISO Management Committee Briefs: March 31, 2021
NYISO officials briefed the Management Committee on the ISO's performance during an historic snowstorm in December last year.
Colo. Regulators Consider the Advantages of Interstate Tx
The Colorado PUC discussed the potential benefits of interstate transmission planning, while the Senate is reviewing a bill requiring RTO membership.
Blowin’ in the Wind: SPP Sets New Renewable Marks
Having recovered from February’s severe weather, SPP’s market operations are back to normal, with wind and other renewable resources again setting records.
MISO, Stakeholders Disagree on Post-storm Accreditation
MISO staff and stakeholders clashed in front of board members on whether the RTO’s proposed capacity accreditation design should move forward.
No MISO-SPP Joint Study in 2021
MISO, SPP won’t do a major interregional transmission study in 2021; they are focusing on a joint targeted interconnection queue study.
ACORE: Lack of Interregional Tx Planning Slowing Wind, Solar Development
A lack of interregional transmission projects is stymying the growth of renewable resources in SPP, MISO & PJM, according to a new report released by ACORE.
FERC Approves NextEra Purchase of GridLiance
FERC conditionally approved NextEra Energy Transmission’s $660 million purchase of GridLiance transmission operations in MISO, SPP and CAISO.
FERC Rejects 2 of 3 SPP Waiver Requests
FERC cited the filed rate doctrine on retroactive ratemaking to reject a pair of SPP requests for waivers to resettle billing errors.
COVID, Storms, Wildfires Roiled Markets in 2020
COVID-19 and record hurricane and wildfire seasons made 2020 “a unique and at times challenging year,” FERC said in its State of the Markets report.
SPP M2M Hits Staggering $168.1M
SPP raked in another $27.87 million in market-to-market settlements from MISO during December and January, pushing its total to $168.11 million.

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