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.
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.
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.
Schedule 1 – Updated Schedule 1 Revenue Requirement and Divisor – Overall, the MISO Through and Out Rate change is: (0.09%)
Schedule 2 - Divisors were updated for the June 2019 rate Update. In addition, the following changes were made:
Schedules 7,8 & 9 - Historical Test Year TOs - Revenue Requirement, Divisor, and CBM updates. AEP I & M integrated to DEI TPZ and added WVPA to the AMMO TPZ. Overall MISO Rate Change: 4.72%.
Schedules 26, 37 & 38 - Historical TO ATRR and Divisor updates. Overall MISO Rate Change: (2.67%)
Schedule 33 - Revenue requirements were modified per dockets ER18-1890 and ER19-934. Divisors were updated, and adjustments were made to revenue requirements for transactions exiting the system in 2018. The MISO system average rate decreased by 7.83%.
Schedule 41 - Annual Update Revenue Requirement and Divisors resulting in decreases of: EAI rate change: (18.63%), ELL rate change: (3.52%), ETI rate change: (18.09%), ENO rate change: (34.11%).
Schedule 42B - Annual Update Revenue Requirement and Divisors, resulting in decreases: EAI rate change: (8.01%), ELL rate change: (6.58%), EMI rate change: (7.21%), ETI rate change: (8.26%).
Schedule 45 - Divisors updated. Overall MISO Rate Change: (2.14%)
The overall impact on MISO system rates follows:
These changes are effective June 1, 2019.