A MISO board committee advanced 432 projects from transmission owners at a cost of almost $12.3 billion under the RTO’s 2025 Transmission Expansion Plan.

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.

The cost estimate for MISO’s 2025 Transmission Expansion Plan has fallen slightly from previous estimates to $12.36 billion.

MISO’s 2025 Transmission Expansion Plan has amassed another $2 billion in investment since early spring, bringing its total to $13 billion.

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.

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.