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ATCO Electric Ltd. Big Sky Transmission Project, AUC Decision 27852-D01-2022

Link to Decision Summarized

Electricity – Facilities


Big Sky Solar GP Inc. (“Big Sky Solar”), a wholly-owned subsidiary of Renewable Energy Systems Canada Inc., has approval to construct and operate the 140-megawatt (“MW”) Big Sky Solar Power Plant and associated Bullseye 1004S Substation near the hamlet of Acadia Valley.

ATCO Electric Ltd. (“AE”) applied for approval to construct and operate a 65-metre 144-kV transmission line (“Line 7LC760”) from the existing Transmission Line 7L760 to Big Sky Solar’s approved Bullseye 1004S Substation. AE also requested approval to alter the existing transmission line to accommodate the connection.


The AUC approved the applications from AE to construct and operate the transmission facilities related to the Big Sky Solar Connection Project.

Applicable Legislation

Alberta Utilities Commission Act, SA 2007, c A-37.2 – ss 9 and 17.

ISO Rules Section 501.3 – Abbreviated Needs Approval Process.

AUC Rule 007: Applications for Power Plants, Substations, Transmission Lines, Industrial System Designations, Hydro Developments and Gas Utility Pipelines.

Hydro and Electric Energy Act, RSA 2000, c H-16 – ss 14, 15, 18, 19 and 21.

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