Cadomin 983S Substation Upgrade (2969)

FortisAlberta Inc. (Fortis) has applied to the AESO for transmission system access to meet growing demand for electricity in the Cadomin area. Fortis’ request can be met by the following solution:

• Upgrade the existing Cadomin 983S substation, including replacing the existing 69/25 kilovolt (kV) transformer with a 69/25 kV transformer of higher capacity.
• Add or modify associated equipment as required for the above transmission developments.

Abbreviated Needs Approval Process: Notice of Consideration

The AESO intends to consider the need for the Cadomin 983S Substation Upgrade for approval under Section 501.3 of the ISO rules, Abbreviated Needs Approval Process, (ANAP Rule) on or after June 18, 2026. If stakeholders have any questions or concerns, please contact the AESO before this date.

The AESO has determined that the Project is eligible for consideration under the ANAP Rule because the following eligibility criteria have been met:

• Project costs are estimated to be $3.7M and were classified as participant-related in accordance with the ISO tariff. Additionally, in accordance with the ISO tariff, the AESO has determined that Fortis is eligible for approximately $1.2M of local investment;
• the AESO has completed a participant involvement program (PIP) in accordance with the guidelines in Alberta Utilities Commission Rule 007;
• the Project is not anticipated to result in significant environmental effects; and
• No concerns or objections with the need for the Project have been raised. Prior to making its approval decision, the AESO will address additional stakeholder concerns that arise, if any.

Supporting information about this Project is available in the following documents:

• AESO Engineering Connection Assessment
• DFO Distribution Deficiency Report
• TFO Cost Estimate
• AESO PIP Summary

Need Overview

• Need for the Cadomin 983S Substation Upgrade [Posted: January 21, 2026]