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City of Lethbridge Application for 2021 Interim Transmission Facility Owner Tariff, AUC Decision 25868-D01-2020

Link to Decision Summarized


In this application, the AUC approved the application by the City of Lethbridge (“Lethbridge”) for the 2021 interim and refundable transmission facility owner (“TFO”) tariff. The AUC approved Lethbridge’s 2021 interim and refundable TFO tariff of $759,137 per month.


In the application for the 2021 interim and refundable TFO tariff, Lethbridge requested continuation of its approved 2020 tariff of $759,137 per month on an interim and refundable basis until such time as the AUC approved either a revised interim or a final tariff.


In Decision 25570-D01-2020, the AUC approved an annual TFO tariff revenue requirement for Lethbridge in the amount of $8,104,200 for 2018, $8,651,200 for 2019 and $9,109,600 for 2020. The 2020 approved TFO tariff revenue requirement represented a monthly charge to the Alberta Electric System Operator (“AESO”) of $759,137, effective January 1, 2020, to December 31, 2020.

A final 2021 TFO tariff would not be approved and in place before January 1, 2021, there was no opposition to the application or evidence of prejudice to customers, and the interim rate would promote regulatory efficiency and short-term rate stability. Based on this the AUC found Lethbridge’s request to continue with its approved 2020 TFO tariff on an interim refundable basis to be reasonable.

The AUC found that the 2021 interim refundable TFO tariff approval shall remain in effect until replaced by a revised interim or final tariff.

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