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December 15, 2025

Southwest Power Pool (SPP)

Evergy
FERC Affirms Affiliate Status of Evergy, Bluescape
FERC affirmed Evergy’s status as an affiliate of Bluescape Energy Partners, rebuffing rehearing requests from the Kansas City utility and the Edison Electric Institute.
Oklahoma Municipal Power Authority
FERC Denies Rehearing over SPP Z2 Credits
FERC rejected four separate rehearing requests related to SPP’s revenue credits under Attachment Z of its tariff.
SPP
FERC Approves Revisions to SPP GI Process
FERC accepted SPP tariff revisions that clarify its interconnection customers’ financial security refund.
Lawrence Berkeley National Laboratory
Interconnection Costs on the Rise, Berkeley Lab Study Finds

Interconnection costs are on the rise across the U.S., according to a Lawrence Berkeley National Laboratory analysis of thousands of projects in five organized electricity markets.

MISO and SPP
MISO Stakeholders Request JTIQ Cost Containment Measures
Stakeholders asked for cost containment measures for MISO's and SPP’s Joint Targeted Interconnection Queue portfolio after the RTOs said the cost estimate for the projects nearly doubled.
© RTO Insider LLC
Under the Dome: ERCOT Sets Peak Demand Marks
ERCOT is setting records for peak demand in what has been described as "hellacious" temperatures, "even by Texas standards."
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.
Enel Green Energy
FERC Accepts SPP’s Planning Study Processes for TOs
FERC has approved SPP’s tariff revisions to its transmission planning process that establish new study processes for transmission-owning members.
Office of Nuclear Energy
NextEra Gets Final OK for Kansas-Missouri Tx Line
Kansas regulators have granted a siting permit for NextEra Energy Transmission's Wolf Creek-Blackberry project, clearing the way for construction to begin.

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