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. Export revenues brought in more than 22% of our total electric revenue 2010-19 or about $3.9 billion.

With regulatory approvals in place, we are building 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

Tower 121 on the floodway.

Tower 121 on the floodway.
Enlarge image.

We have finished installing foundations and assembling towers.

We continue to use helicopters to install conductors on the towers. Stringing continues in the southern loop corridor, south of Riel Station to south of Anola, south of Anola to south of Richer, and north and south of La Broquerie to Piney.

  • 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. An implosion sleeve makes a loud noise and flash similar to a firework. If you hear or see one, it’s probably just us. 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, equipment and terminating cables, doing cable and panel work, and testing the equipment. The large transformers are on foundations and are being assembled.

Civil works are completed at Dorsey and Riel Converter Stations including fences, concrete, piling, foundations and blast walls. At Riel, transformers are on site and in place. Electrical work continues at both stations including cable pulling and terminating, conduit and testing equipment and electrical components.

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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: