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December 9, 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. 
© RTO Insider LLC
MISO Year in Review: 2023 — and Likely 2024 — Dedicated to Deflecting Reliability Issues
MISO juggled several projects over 2023 designed to fend off imminent reliability problems and will keep up the multitasking in 2024.
Entergy
Former Employee Details Failures at Entergy’s Grand Gulf
A former Grand Gulf nuclear plant employee testified he witnessed mismanagement by supervisors and was fired for refusing to revise audits documenting problems.  
© RTO Insider LLC
MISO Board Approves $9B MTEP 23; Members Deliberate on New Expedited Review Rules
The MISO board approved the $9 billion, 572-project 2023 Transmission Expansion Plan, which contains the most expedited project reviews ever.
© RTO Insider LLC
Board OKs MISO Budget Increase for 2024
MISO’s base operating budget will increase 15% in 2024, mostly due to the grid operator adding about 70 staff positions.
© RTO Insider LLC
MISO Expecting Quiet Winter
MISO leadership predicted adequate supply paired with a temperate winter at the final Board Week of the year.
Invenergy
Grain Belt Express Asks FERC to Overrule MISO on In-service Date
Invenergy asked FERC to order MISO to allow it to energize part of its Grain Belt Express project in 2028 despite delays in upgrades in Ameren’s territory.
MISO
MISO Champions Queue Crackdown as Stakeholders Blast MW Cap on Project Entries

Several MISO stakeholders took exception to the RTO’s proposal before FERC to cap the volume of interconnection requests it accepts annually.

Potomac Economics
MISO and IMM: M2M Flowgate Issue with SPP not Sustainable, May Require Litigation
MISO and its Independent Market Monitor agree legal action is likely concerning the RTO’s payments to SPP for a market-to-market flowgate.
MISO
Iowa ROFR Law Overturned, Throwing Multiple MISO LRTP Projects into Uncertainty
An Iowa court has formally struck down the state’s right of first refusal law, driving uncertainty for $2.6 billion worth of MISO's long-range transmission projects.
Dairyland Power Cooperative
MISO Selects Ameren, Dairyland to Build 3rd and 4th LRTP Competitive Projects
MISO has chosen Ameren Transmission Co. of Illinois and Dairyland Power Cooperative to build the third and fourth competitive transmission projects emerging from its long-range transmission plan.

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