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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 for the following items: 

Schedule 1

  • OTP Pricing zone added MRES load to account for service MRES is receiving.  The OTP Pricing zone rate decreased 8.30% but the MISO-wide rate did not change as the Tariff states the Divisor will use the Schedules 7 and 8 Drive-Out and Drive-Through Rates.


Schedule 2  

  • Per Docket ER20-2222, Crystal Lake Wind III was added to zone 1 (ITCM).

 Overall, the MISO Schedule 2 rate increased by 0.33%.      


Schedule 26C26D

  • NIPSCO TMEP projects were updated to reflect the ROE change to 10.02%.  This correction does not affect rates, just billing amounts with a 0.675% change in the monthly charge.


These changes are effective September 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