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Transmission Settlements and Pricing

The Monthly Transmission Settlements process financially settles Transmission Customers’ use of the MISO transmission system and our mandated, non-competitive Ancillary Services. Customer charges for transmission and Ancillary Services are calculated based upon the FERC-approved Tariff, and collected funds are distributed to Transmission Owners and providers of the mandated Ancillary Services. 

Transmission Settlements follows a calendar-month billing cycle by which MISO determines what charges Transmission Customers have incurred and the distribution of revenue to Transmission Owners and/or generators.  Customers also may count on us for technical assistance and support on MISO Transmission rate-related matters. Our processes provide non-discriminatory reviews of Attachments O, GG, MM, SS, and ZZ submissions annually.


ROE Complaint/Resettlement Update

On November 21, 2019 FERC issued Opinion 569 (ROE Docket EL14-12) which lowers the base ROE from 10.32% to 9.88%, and requires refunds for 2 periods: #1) 11/12/13 - 02/11/2015 & #2) 09/28/16 – 11/21/19.  Materials related to the Resettlement can be located below.

TO Matrix of ROE Refund Applicability

Related Documents


 Rate changes were processed to incorporate the following:


Schedule 2

  • Per Docket ER21-953, Waterford Unit 1 (ELMP) was removed from Zone 29.
  • The MISO Schedule 2 rate decreased .47%.


Schedule 7, 8, & 9

  • Per Docket ER20-108, an SPP filing, which approved additional MDU facilities to be included as Section 30.9 credits, affecting MDU's revenue credits on the Attachment O.
  • MISO Average rate decreased by .03%.


Schedule 33

  • Per Docket ER21-370 a Blackstart unit will be added to Zone 32.
  • MISO Schedule 33 increased by 2.51%.


These changes are effective February 1, 2021.



Attachments, Schedules and TO Data

Transmission rates are effective as of the date of their posting and will not reflect any retroactive adjustments due to FERC Orders or any other reasons.

General Documents