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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 annual revenue requirements and/or divisor updates of Attachments O/GG/MM/ZZ for Transmission Owners using historical Attachment Os.


Rate changes were processed to incorporate the following:

 Schedule 2 - Divisors were updated for the June 2020 rate Update.  In addition, the following changes were made:

  • Per Docket ER20-1062, Garden Wind LLC was added to the ITCM (1) zone
  • Per Docket ER20-6 the revenue requirement for Warrick Unit 4 (AGPT) was reduced in the Vectren (23) zone
  • Per Docket ER20-1394 - Alliant’s Sheepskin and Rock River plants were retired in the ALTE (2) zone
  • Overall, the MISO Schedule 2 rate increased by 0.26%.      

 Schedule 41 - Annual Update Revenue Requirement and Divisors resulting in EAI rate change: (100.00%), ELL rate change: (100.00%), ETI rate change: 7.29%, ENO rate change: 12.60%. ELL and EAI reached full recovery of their Storm Securitization amounts resulting in a $0 rate going forward.

 Schedule 42B - Annual Update Revenue Requirement and Divisors, resulting in decreases: EAI rate change: (2.87%), ELL rate change: (5.17%), EMI rate change: (2.42%), ETI rate change: (10.28%).

 The overall impact on MISO system rates follows:

  • Schedule 1:                   2.34% decrease
  • Schedule 2:                   0.26%  increase
  • Schedules 7, 8, & 9:      1.93% increase
  • Schedule 26:                 0.37% decrease
  • Schedule 33:                 0.04% increase
  • Schedule 45:                 0.06% decrease

 These changes are effective June 1, 2020.



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