Seven Sisters Generating Station

The Seven Sisters Generating Station is located approximately 90 km (60 miles) northeast of the City of Winnipeg, and approximately 72 km (45 miles) upstream of Lake Winnipeg on the Winnipeg River.

The Seven Sisters Generating Station consists of a powerhouse, spillway and dykes and has a name plate capacity of 180 MW (242,160 hp). The station was developed in two stages. The first stage was completed in 1931 and involved construction of three units. The second stage was completed in 1952 following World War II and involved construction of the additional three units.

The station components include a six unit powerhouse, a two bay gated sluiceway dividing a 27 bay spillway into two sections, two non-overflow dams, and north and south dykes. The dykes extend for 5.6 km (3.5 miles) upstream on the Winnipeg River's north shore and 7.2 km (4.5 miles) upstream on the south shore. The dam and the dykes impound Natalie Lake.

Licences:

• Third Short Term Extension Licence (2020-2025)
• Second Short Term Extension Licence (2015 to 2020)
• Short Term Extension Licence (1982 to 2015)
• Final Licence (1932 to 1982)

Request for Renewal Licence:

• Seven Sisters Generating Station Renewal Licence Request (2009 status update)

Licence Related Documentation (Submitted by the Licensee):

• Seven Sisters GS Short Term Extension Licence Renewal Application (March 2020)
• Seven Sisters GS Renewal Licence Support Report & Drawing Submission Letter (2018)
• Seven Sisters Generating Station Renewal Licence Support Report (2018)
• Seven Sisters GS Renewal Licence Drawing (2018)
• Seven Sisters Generating Station Licence Implementation Guide for Water Levels (2017)
• Seven Sisters Generating Station Short Term Extension Licence Renewal Application (June 2015)
• Seven Sisters Generating Station Short Term Licence Extension Application - Supporting Documentation (2010)