December 6, 2024

SPP/WEIS

SPP
FERC Issues Deficiency Letter for SPP’s RTO West Tariff
FERC issued a deficiency letter over SPP’s proposed revisions to its tariff, bylaws and membership agreements intended to facilitate nine western entities’ RTO membership as transmission owners.
Black Hills Energy
CAISO’s WEIM Plucks Black Hills Utilities from SPP’s WEIS
CAISO scored a geographically small but symbolically significant victory with the announcement that two Black Hills Energy subsidiaries will move to the ISO’s Western Energy Imbalance Market.
SPP
FERC Accepts Changes to SPP’s WEIS Market
FERC accepted SPP’s revisions to its WEIS market tariff related to the residual supply index and ensuring that affiliated market participants’ resources are evaluated together.
© RTO Insider LLC
Colorado PUC Sets Rules for Electricity Market Participation
The Colorado Public Utilities Commission has proposed rules that would govern how it will review applications from utilities wishing to join the various regional markets being developed in the Western Interconnection.
© 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
FERC Rejects SPP WEIS Market Power Rule

FERC rejected SPP’s proposed market power test for the Western Energy Imbalance Service, saying it gave the Market Monitor too much discretion.

© RTO Insider LLC
FERC Rejects Tri-State’s Exit Deal with United Power
FERC found that Tri-State did not demonstrate that United's withdrawal agreement was just and reasonable under the Federal Power Act.
Steven Baltakatei Sandoval, CC BY-SA-4.0, via Wikimedia
EPA Power Plant Proposal Gets Mixed Reception in Comments
EPA received comments on its proposal to regulate greenhouse gases from power plants, with some, including ISO/RTOs, arguing the proposal needed major improvements to preserve reliability.
MISO and SPP
JTIQ Portfolio Cost Estimate Nearly Doubles to $1.9B
The cost estimate for MISO’s and SPP’s package of 345-kV lines meant to facilitate the interconnection of generation at the seams has nearly doubled, the RTOs have said in the past week.
Lawrence Berkeley National Laboratory
Iterative Changes to Interconnection Queues Discussed at Transmission Summit
At Infocast’s Transmission & Interconnection Summit, experts said interconnection requests continue to grow and grid operators have tried to keep pace.

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