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The Alberta Utilities Commission issued its decision on the routing and associated infrastructure for the Fort McMurray West 500-kV Transmission Line on February 10, 2017. The applicant’s preferred west route option was approved. The full decision is available from the link below.

Decision 21030-D02-2017

Project summary

Alberta PowerLine L.P. applied to the AUC to build new power transmission facilities in north central Alberta between the Wabamun area to the Fort McMurray area. Alberta PowerLine has identified a preferred west route and an alternative east route; both routes also contain variant options. In addition to the transmission line, Alberta PowerLine  proposes to build and operate three optical repeater sites and expand the Livock 939S substation and the Thickwood Hills 951S substation. ATCO Electric Ltd. and AltaLink Management Ltd. applied for alterations to their facilities associated with Alberta PowerLine's proposed transmission line.

Alberta PowerLine maps of proposed project

For full application details log on to the AUC's eFiling System, enter proceeding number 21030 and select go.

Hearing

The AUC issued notice of hearing on December 29, 2015 where a June 6, 2016 hearing date was set. A notice of application amendment was issued February 24, 2016 and then the hearing locations were advised in another notice issued on April 15, 2016. On May 6, 2016 the AUC cancelled the public hearing due to the catastrophic wildfires in Fort McMurray and then rescheduled the hearing for September 19, 2016 in a notice issued on June 1, 2016. The AUC issued a notice to inform that the hearing scheduled to commence on Monday, September 19, 2016 was delayed and until October 12, 2016. The AUC public hearing for the Fort McMurray West 500-kV project began on October 12, 2016 in Edmonton, Alberta and concluded on November 10, 2016.

Additional information about the applications

Alberta PowerLine is proposing the following developments:

  • A 500-kV single-circuit transmission line approximately 400 kilometres in length, designated as 12L41 from AltaLink's transmission line 1241L to the Livock 939S substation. The transmission line also contains three optical repeater sites.

  • A 500-kV single-circuit transmission line approximately 100 kilometres in length, designated as 12L44 from the  Livock 939S substation to the Thickwood Hills 951S substation.

  • One 500-kV switchyard, including  four 500-kV circuit breakers, at the existing the Livock 939S substation.

  • One 500-kV switchyard, including one 500/240-kV transformer and three 500-kV circuit breakers, at the proposed the Thickwood Hills 951S substation.

ATCO is proposing the following developments:

  • Adding a 25-kV circuit breaker at the Livock 939S substation.

  • If the preferred west route is selected, alter transmission line 9L913 by constructing one kilometre of the line in the Fort Assiniboine Sandhills Wildland Park on double-circuit structures with transmission line 12L41 within the  existing easement for transmission line 9L913. A temporary power line would also be required to keep 9L913 in service while construction of the double-circuit towers is underway.

  • Construct the 240-kV Thickwood Hills 951S substation adjacent to Alberta PowerLine's 500-kV Thickwood Hills 500-kV switchyard.

  • Construct two new 240-kV transmission lines , approximately three kilometres long, to connect the Thickwood Hills 951S substation to transmission line 9L07. This would alter 9L07 and create an in-and-out configuration. The portion of 9L07 from the Thickwood Hills 951S substation to Dover 888S substation would be re-designated as 9L112.

  • Construct two new 240-kV transmission lines, approximately 20 kilometres long, from Thickwood 951S substation to transmission line 9L01. The portion of 9L01 from the new lines to Dover 888S substation would be re-designated as 9L30.

AltaLink is proposing the following developments:

  • Adding a 500-kV circuit breaker and 500-kV shunt reactor bank to Sunnybrook 510S substation.

  • Construction 100 metres of new 500-kV transmission line, designated as 1241L, from Sunnybrook 510S substation to Alberta PowerLine 's 12L41.

More information

AUC information booklet for Fort McMurray West 500-kV project

For full application details log on to the AUC's eFiling System, enter proceeding number 21030 and select go.

More information on the proposed project can be found on Alberta PowerLine's website for the Fort McMurray West 500-kV transmission project.