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December 6, 2025

Transmission

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.
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. 
CAISO
FERC Affirms Use of RTO Adder for CAISO Tx Developer
FERC affirmed the ability of an independent transmission developer to include an RTO adder in its CAISO formula rate, rebuffing a request by the California Public Utilities Commission to reject the company’s use of the incentive.
Hanson Inc.
Ameren Argues Exclusive Rights to MISO Illinois Competitive Tx Projects
Ameren Illinois argued to FERC that it should have dibs on sections of two competitive long-range transmission projects worth almost $2 billion from MISO’s second portfolio, claiming Illinois’ “first in the field” doctrine is tantamount to a right of first refusal law.
MISO
MISO Skirts Max Gen Emergency in July Heat
MISO issued a slew of warning notices and operating instructions — especially in the South region — to help deal with oppressive July heat, forced generation outages and strained transmission.
© RTO Insider LLC
MISO Revising Transmission Futures After Repeal of Tax Credits
The federal government’s rollback of incentives for renewable energy has thrown a wrench into MISO’s work to develop four new transmission planning scenarios. 
PJM
PJM MRC/MC Briefs: July 23, 2025
PJM's Markets and Reliability Committee endorsed by acclamation an issue charge by Constellation Energy focused on how storage as a transmission asset could be implemented in the RTO.
NYISO
NYISO Presents Informational CAFs for Non-firm Generators
NYISO provided a glimpse into the possible capacity accreditation factors for gas generator units that have not guaranteed a supply of fuel for the winter capability period.
Shutterstock
CPUC OKs New PG&E Rule to Speed Tx Connections for AI Data Centers, Others
The California PUC partially approved a new rule that will make it easier for AI data centers and other large customers such as EV charging stations to complete transmission connection projects in PG&E's territory.
U.S. Army Corps of Engineers
BPA Customers to See Increased Power, Transmission Rates
Customers of the Bonneville Power Administration will see power rates increase by about 8-9% over the next three years while transmission rates will jump by an average of nearly 20%, the agency said.

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