Independent system operator tariff

Independent system operator tariff


​The independent system operator (ISO), operating as the Alberta Electric System Operator (AESO), has applied for approval from the Alberta Utilities Commission of the 2018 ISO tariff. The ISO tariff sets out the rates to be charged for, and the terms and conditions that apply to, each class of system access service provided by the AESO.

Based on preliminary estimates provided by the AESO, the 2018 ISO tariff revenue requirement would decrease by approximately 1.3 per cent as compared to the 2017 ISO tariff revenue requirement forecast that was approved by the Commission in Decision 22093-D02-2017.

General information on the ISO tariff can be found on the transmission rates page.

Accessing proceeding documents

The eFiling System should be accessed to view the applications and the other documents the AUC will be considering in this proceeding. The system is also used to file submissions and evidence to participate in the proceeding.

To create an account, select "New account" and follow the steps to create a user ID and password. If you have any questions about how to use the system please contact us at or 403-592-4500.

Documents being considered in this proceeding can be found in the eFiling System (which requires log in). Once you have logged in, enter 22942 in the "go to" section at the top left corner of your screen.

Proceeding 22942      Register

Application status: under review

AESO Application amendment filed: August 17, 2018 

Hearing dates: March 18 - 22, 2019

Hearing location: William Andrew Grieve Hearing Room

Decision expected: TBD


AUC contact: Jay Halls
 403-592-4426 or  

AUC contact: Salma Karim
 403-592-4436 or  

 Alberta Electric System Operator contact: Brenda Hill

403-539-2948 or  

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Anyone can access applications and proceeding information through the eFiling System.

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