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December 24, 2025

Midcontinent Independent System Operator (MISO)

Stakeholders: MISO System Fix Too Late for Summer
MISO’s effort to improve a key communication system will come too late to smooth summertime emergency procedures, stakeholders complained.
MTEP 19 Revealing High Price Tag
MISO is polishing a draft 2019 Transmission Expansion Plan (MTEP) that could end up being one of the RTO’s most expensive buildout packages.
MISO Sectors OK Expanding Nominating Committee
Representatives contend that MISO should increase stakeholder representation on the committee that selects candidates for its Board of Directors.
Steering Committee Advances Roadmap Suggestions
MISO’s Steering Committee routed eight new market improvement proposals to stakeholders for debate and prioritization by voting.
MISO Undecided on Amending Storage Plan
MISO is pondering whether to amend its Order 841 compliance filing after FERC rejected multiple requests to alter the landmark energy storage order.
Outside Parties Slow MISO-PJM Freeze Date Thaw
Parties of a joint congestion management process are resistant to an update to MISO and PJM's freeze date, used to grandfather transmission flows.
Xcel Latest MISO Utility to Pledge Zero Coal
Minnesota’s Xcel Energy is aiming to be coal-free by 2030, supported by extending service of its nuclear plant and using more natural gas-fired generation.
FERC Ends Examinations of TO Tax Calculations
FERC terminated its investigations into the tax calculations included in transmission rates after several MISO transmission owners made compliance filings.
Refund Hearing Ordered in Pseudo-Tie Complaint
Refunds appear imminent in a dispute over MISO and PJM’s past practice of double-charging pseudo-tied generation for congestion fees.
MISO Limits Storage as Transmission Asset Ownership
MISO shut down the prospect of allowing non-transmission owners to operate storage-as-transmission assets in the RTO’s initial ruleset for the resources.

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