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December 5, 2025

MISO

The Midcontinent Independent System Operator is a regional transmission organization that plans transmission projects, administers wholesale markets for its membership and manages the flow of electricity in Arkansas, Illinois, Indiana, Iowa, Kentucky, Louisiana, Michigan, Minnesota, Mississippi, Missouri, Montana, North Dakota, South Dakota, Texas and Wisconsin. 
MISO
MISO on Track to Wrap Summer with 122-GW Peak, Addresses Frequent South Advisories
MISO is poised to close the door on summer with an almost 122-GW peak while issuing several capacity advisories for MISO South.
We Energies
26.5 GW of Mostly Gas Gen Compete for MISO’s Sped-up Grid Treatment
MISO announced that its first interconnection queue express lane application window turned up 47 projects at a little more than 26.5 GW of proposed new capacity, with natural gas generation accounting for about 20 GW.
NextEra Energy
NextEra Closer to Recommissioning Duane Arnold with FERC Waivers
FERC granted NextEra Energy’s request to waive certain rules under MISO’s tariff to allow the company to restart its Duane Arnold nuclear plant by the end of 2029.
© RTO Insider 
Federal Volatility, MISO Tx Complaint Rattle Midcontinent Energy Summit
The tone of Infocast’s 2025 Midcontinent Energy Summit was noticeably apprehensive compared with last year, owing to political and regulatory uncertainty, load growth ambiguity, fluctuating tariffs and a pending complaint against MISO’s long-range transmission plan.
MISO
FERC Rules Costs of Mich. Coal Plant Extension Can be Split Among 11 States
FERC said MISO should spread the costs of keeping a Michigan coal plant running past its retirement date over the RTO’s entire Midwest region.
MISO
Stakeholder Forum: Recent MISO Complaint Undermines Regional Transmission Planning Framework
A new attack on regional transmission planning threatens to unravel a decade of progress toward a more reliable, affordable, and interconnected electric grid, says Ted Thomas.
© RTO Insider 
MISO States Split on FERC Complaint to Unwind $22B Long-range Tx Plan
Members of the Organization of MISO States are divided on whether the organization should register comments in a FERC complaint that could fundamentally change the way MISO can plan its long-view transmission.
Bechtel
Members Say MISO RA Better off Under Seasonal Capacity Auctions, Sloped Curve
MISO members largely agreed that MISO’s new capacity auction structure — featuring individual seasonal auctions and a sloped demand curve — is better for the health of the system.
© RTO Insider
MISO Could Replace Up to 3 Board Members by Year End
MISO might replace up to three members on its board of directors as they reach term limits at the end of 2025.
ITC and ATC
MISO Requests Month to Respond to States’ Long-range Tx Complaint
MISO asked FERC for a month to prepare a defense of its second long-range transmission portfolio, which is being challenged by five state commissions in the footprint.

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