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December 18, 2025

RTO Insider

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Tri-State Generation and Transmission Association
Tri-State Seeks FERC Approval for Data Center Load Tariff
Tri-State G&T is seeking FERC’s approval for a new tariff designed to manage the heavy volume of data center load expected to materialize in its member utilities’ service territories over the next decade.
Lawrence Berkeley National Laboratory
Large-load Tariffs Touted as Alternative to ‘Side Deals’
As regulators grapple with rate design for large customers such as data centers, some experts are pointing out the transparency benefits of tariffs compared to special contracts between the utility and customer. 
MISO
MISO: Market Platform Replacement will be Overbudget, Stretch into 2028
MISO said its nine-year effort to replace its market platform will exceed original budget contingencies and won’t be completed until 2028, three years later than previously predicted.
© RTO Insider 
Senators Focus on FERC’s Independence at Swett, LaCerte Confirmation Hearing
FERC nominees Laura Swett and David LaCerte took questions from senators at a confirmation hearing, including many about the future of independent agencies.
Revolution Wind
Revolution Wind Sues to Lift Federal Stop-work Order
Revolution Wind’s developers are seeking an emergency injunction against the federal stop-work order slapped on the offshore wind project.
SPP
SPP, Members Developing 765-kV Transmission Overlay Plan
SPP and its members are working together on a draft 765-kV transmission overlay as part of its 2025 Integrated Transmission Planning assessment that will dwarf 2024's record study.
Shutterstock
West Must Step up Gas-electric Coordination, WECC Panelists Say
Coordination between the gas and electric industries is becoming increasingly crucial to meet demand and to tackle extreme weather events, panelists participating in a WECC webinar argued.
McGranahan Architects
WEIM Emissions Attribution Rules Apply to EDAM, Wash. Agency Clarifies
Washington’s Ecology Department clarified that cap-and-invest rules that apply to CAISO’s Western Energy Imbalance Market also will cover the ISO’s Extended Day-Ahead Market when it begins operations in 2026.
EDF Renewables
Report: Big Beautiful Bill to Increase Power Prices in NYISO, PJM
A new analysis of the One Big Beautiful Bill Act from Aurora Energy Research found that the bill likely will increase wholesale power prices in NYISO and PJM.
Ontario Energy Board
Ontario Energy Board Plans 22% Spending Increase
The Ontario Energy Board plans a 22% increase in its 2025/26 budget with the addition of 32 employees, its biggest hiring surge in at least five years.

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