More in this section

Manitoba–Minnesota Transmission Project

The Manitoba–Minnesota Transmission Project (MMTP) is a 500-kV transmission line that exports reliable and renewable energy to Minnesota Power’s Great Northern Transmission Line. Learn more about our export revenues.

The transmission line runs from the Winnipeg area to the U.S. border in southeastern Manitoba. Upgrades were also made to our Dorsey, Riel, and Glenboro converter stations.

Completed on schedule and under budget in June 2020, the MMTP strengthened the reliability of Manitoba’s electricity supply and increased access to American markets. The budget as of March 2020 was estimated at $490 million.


View materials created for the Manitoba–Minnesota Transmission Project:

Environmental protection and management plans

These plans were used as guides for contractors and field personnel during the construction and/or operation of the MMTP. They helped us meet environmental legislation requirements and protect the environment.

Contractor plans:

On May 28, 2021, the Canada Energy Regulator sent letters indicating that the Commission has approved Manitoba Hydro’s Crown land offset measures plan and wetlands offset measures plan and no net loss of wetlands plan.

The Wetland Project Agreement was signed by the Province of Manitoba, Manitoba Habitat Heritage Corporation, and Manitoba Hydro on April 20, 2022.

Environmental Impact Statement

An environmental impact statement (EIS) summary document (PDF, 1.5 MB) was developed for the MMTP and outlined the concerns heard throughout the environmental assessment process and how these concerns were addressed.

The EIS was submitted to Manitoba Conservation and Climate for review in September 2015.

Regulatory approval & filings

In August 2019, the National Energy Board of Canada granted regulatory approval.

Manitoba Conservation and Climate granted Environment Act Licence No. 3288 to Manitoba Hydro on April 4, 2019 for the construction, operation, and decommissioning of the Manitoba–Minnesota Transmission Project.

Final preferred route

Engagement materials


View all MMTP videos on YouTube.

Contact us