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December 19, 2025

Midcontinent Independent System Operator (MISO)

FERC Orders Final Revision for MISO Storage Compliance
FERC asked MISO to remove or defend its requirement that distribution utilities and load-serving entities report real-time grid injections and withdrawals to be compliant with Order 841.
Max Gen Event Managed Efficiently, MISO Says
MISO said it quickly regained control during its first maximum generation emergency July 7 during a lasting heatwave.
MISO, SPP Regulators Mull Seams Recommendations
MISO and SPP regulators are close to asking the RTOs for improvements to transmission operations on their seam as their market monitors wind down a study.
New MISO Sector Gets FERC OK — with a Catch
MISO won FERC approval to create an 11th stakeholder sector for hard-to-categorize members despite some misgivings about the equity of the new arrangement.
FERC Upholds Cost Allocation on MISO BRPs
FERC rejected transmission customers’ complaint over MISO’s seven-year-old cost allocation plan for baseline reliability projects.
MISO Cost Allocation Plan Wins OK on 3rd Round
The third time’s a charm for MISO getting FERC approval of its sweeping, cost-allocation overhaul for large economic transmission projects.
MISO Anticipates High Energy Prices at 50% Renewables
MISO reiterated it can likely reliably operate the grid with a 50% renewable energy mix but warned certain variables could send energy prices soaring.
Consultant Tells MISO Microcities are Wave of the Future
If one business consultant’s vision proves correct, MISO stakeholders learned, future neighborhoods will be self-contained developments with their own power sources.
MISO Members Make 1st Rules on Sectors
The MISO Advisory Committee adopted the first set of standards for creating and joining stakeholder sectors and discussed the coordination of transmission planning.
FERC OKs Negotiated Rates for Merchant Tx Line
FERC approved SOO Green’s request to charge negotiated rates on its 2,100-MW transmission line that would deliver renewable energy from MISO to PJM.

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