Manitoba–Minnesota Transmission Project

The Manitoba–Minnesota Transmission Project will strengthen the overall reliability of Manitoba’s electricity supply, allow Manitoba Hydro to fulfill current export sales agreements, and increase access to markets in the United States, supporting the export sales that keep rates lower for Manitobans.

With regulatory approvals in place, we are now actively constructing the 500-kV transmission line from the Winnipeg area to the U.S. border in southeastern Manitoba where it will connect to the Great Northern Transmission Line. This includes upgrades to the Dorsey, Riel, and Glenboro converter stations.

Construction updates

A helicopter lifts part of a tower into place.

A helicopter lifts part of a tower into place.
Enlarge image.

Clearing continues near Ste. Genevieve, south of La Broquerie, north of Sundown and south of Menisino.

Tower assembly and foundation work continues. In some areas helicopters are being used in the process:

  • Helicopters lift parts of towers onto foundations and existing tower bases. Crews on the ground fasten the tower in place while the helicopter holds it.
  • Helicopters start at assembly yards and travel to construction sites over unpopulated areas. They don’t fly over homes while they’re carrying equipment.
  • We expect this work to continue for approximately 5-7 days for towers 227–386 (see Construction progress map).

Stringing continues on existing towers.

  • We are preparing for stringing in the corridor southwest of Marchand and are stringing lines between Riel Converter Station and Pembina Highway.
  • Part of the work involves fusing two lines together. Instead of manually crimping lines together using compressors, we use a fast, safe, and reliable alternative called implosion sleeves. To learn more, watch our video Using Implosion Sleeves to Splice Conductor on YouTube.

Work continues on Glenboro station:

  • We're pouring foundations, trenching cable, installing grounding, transformers and other equipment, and doing cable and panel work.
  • We're also preparing to move large transformers to site, which we expect will be in early February.

Civil works are completed at Dorsey Converter Station (fences, concrete, piling, foundations, blast walls, etc.) and Riel Converter Station. At Riel, transformers are on site and to be moved into place and connected to other electrical equipment.

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Learn how we are protecting the environment and keeping people safe during construction (PDF, 222 KB).

Watch videos that explain the need for new transmission and the value of electricity exports.

Maps and documents related to the project are available in the MMTP document library.

Contact us

For more information about the Manitoba–Minnesota Transmission Project: