Marguerite Lake Compressed Air Energy Storage Project Connection (2845)

Cache Power Corp. (Cache Power) has applied to the AESO for transmission system access to its approved Marguerite Lake Compressed Air Energy Storage Project (Facility) in the Bonnyville area. Cache Power’s request can be met by the following solution:

• Add one 240 kilovolt (kV) transmission line to connect the Facility to the existing Marguerite Lake 826S substation in a radial configuration.
• Modify the existing Marguerite Lake 826S substation, including adding one 240 kV circuit breaker.
• Add or modify associated equipment as required for the above transmission developments.

Need Overview

• Need for the Marguerite Lake Compressed Air Energy Storage Project Connection [Posted: January 21, 2026]