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December 5, 2025

MISO Transmission Expansion Plan (MTEP)

MISO
43 Expedited Tx Projects Line up for MISO 2026 Planning Cycle
With its 2025 cycle of transmission projects not yet final and approved, MISO already is working through 43 expedited project requests ahead of its 2026 cycle to support almost 14 GW of new load.
MISO
MISO 2025 Tx Expansion Estimate Drops Slightly to $12.4B
The cost estimate for MISO’s 2025 Transmission Expansion Plan has fallen slightly from previous estimates to $12.36 billion.
MISO
MISO 2025 Transmission Planning Cycle Rises to $13B
MISO’s 2025 Transmission Expansion Plan has amassed another $2 billion in investment since early spring, bringing its total to $13 billion.
© RTO Insider 
MISO Fields Divergent Calls for Stronger South Planning, IRA Reversal in Tx Futures
Calls to consider a dissolved or weakened Inflation Reduction Act alongside appeals for stronger MISO South planning epitomized the tough situation and unsteady political climate MISO finds itself in as it tries to establish transmission planning expectations.
Wtshymanski, CC BY-SA 3.0, via Wikimedia Commons
FERC OKs Incentives on $1B Minn. HVDC Modernization, Debates Procedure
FERC granted rate incentives for the priciest project to come out of MISO’s 2024 Transmission Expansion Plan, setting off friction between commissioners.
© RTO Insider LLC 
Load Growth Drives Early MTEP 25 to $11B
MISO’s preliminary 2025 Transmission Expansion Plan is set to become another record-breaking collection, at 434 transmission projects at an estimated cost of $11 billion.
Meta
CGA Latest to Nudge MISO to Simultaneously Contemplate New Load and New Generation
Clean energy organizations are prodding MISO to contemplate prospective load and generation simultaneously, with Clean Grid Alliance asking MISO to coordinate its annual transmission studies with its interconnection queue studies.
© RTO Insider LLC
Stakeholders Still Asking MISO for Smaller Tx Project Category to Address Congestion After MTEP 24 Study
Stakeholders want MISO to develop a smaller, congestion-relieving transmission study after this year’s near-term congestion study focused on how best to sequence transmission outages needed for construction of long-range transmission projects.
© RTO Insider LLC 
MISO Pauses Long-range Tx Planning in 2025 to go Back to the Futures
MISO will take a breather from its long-range transmission planning over 2025 to retool the 20-year future scenarios that are the foundation of the transmission portfolios.
ITC
$21.8B Long-range Tx Plan Goes to Membership Vote; MISO Resolute, IMM Protesting
MISO members are mulling an advisory vote on whether to support the RTO’s $21.8 billion long-range transmission plan portfolio while tensions simmer over the necessity of the expansion.

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