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December 25, 2025

RTO Insider

Fluence
New Report: Battery Storage Pivotal for MISO Savings
A new report shows the MISO footprint could ring up $27 billion in additional system costs through 2050 if it and members miss the boat on developing new gigawatts of battery storage.
MISO
Five Republican States File FERC Complaint to Undercut $22B MISO Long-range Tx Plan
Five state public service commissions have banded together to request that FERC order a recasting of MISO’s long-range transmission projects, arguing the projects aren’t as beneficial as MISO has advertised.
Office of Gov. Gavin Newsom
Newsom Reiterates Support for Western Regional Market Push
California Gov. Gavin Newsom again appeared to voice support for the proposed bill that would allow CAISO to relinquish market governance to an independent regional organization, saying the legislation can reduce electricity costs and improve reliability.
Constellation Energy
N.Y. Makes Case for Extending Nuclear Subsidies to 2049
The Department of Public Service proposes the state extend its subsidy program for its commercial nuclear facilities from 2029 to 2049 to help ensure the operators of America’s two oldest reactors seeks to relicense them. 
Southern Co.
Southern Expects Large Load Growth to Continue
Southern Co.'s second-quarter earnings were down slightly from the prior year, but executives said they expect healthy growth from the continued addition of large loads such as data centers.
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SPP’s Rew to Retire After 35 Years in Operations
SPP says its longest-tenured employee, Senior Vice President of Operations Bruce Rew, will retire in December and be replaced by C.J. Brown.
Google
PG&E Data Center Proposals Nearly Double in 2025 to 10 GW

Data center applications are piling up in Pacific Gas and Electric’s territory, with some of the new load projected to come online in 2027.

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AEP, Xcel ‘Navigate Rapidly Evolving Energy Policy’
American Electric Power and Xcel Energy say clean energy projects are still a part of their plans, despite the hurdles placed in front of them by the federal government’s budget reconciliation bill.
CAISO
WEIM Q2 Benefits Exceed $420M, as Total Tops $7.4B
CAISO’s Western Energy Imbalance Market provided participants with $422.44 million in economic benefits during the second quarter of 2025, up 15% compared with the same period year earlier despite no change in membership. 
Cleco
IMM: MISO Should Penalize Gen that Falls Flat on Emergency Output
The MISO Independent Market Monitor called on the RTO to develop a penalty system for generation for underperformance during emergencies.

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