Nothern Ontario

Red Lake Transmission Line project

Ontario’s long-term demand for electricity is increasing. To support growth, Hydro One plans to invest in the proposed Red Lake Transmission Line project. Once built, the priority project will provide additional capacity to the area and improve reliability for northern communities.

Current project phase: Environmental Assessment

Expected completion date: 2033

Community open houses
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Visit an open house near you

Current open houses

Ear Falls

Tuesday, September 22

4 to 7 p.m.

Royal Canadian Legion #283 40 John Street

Get directions

Red Lake

Wednesday, September 23

4 to 7 p.m.

Red Lake Community Centre 10 Hammell Road

Get directions

Dryden

Thursday, September 24

4 to 7 p.m.

Royal Canadian Legion #63 34 Queen Street

Get directions
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Powering future growth

Project overview

Ontario's demand for electricity is increasing. To meet demand, Hydro One will develop the Red Lake Transmission Line project in partnership with First Nations. To meet expected needs, the priority project includes the development of a double-circuit, 230-kilovolt transmission line that will run from Dryden to Red Lake, connecting through Ear Falls, as well as associated station facilities.

Once built, the Red Lake Transmission Line project will support communities and growing industry in northwest Ontario.

Partnership with purpose

Empowering Indigenous voices through equity and engagement

Feedback shapes our projects at all stages. We will work alongside Indigenous communities, and engage with residents, businesses, government agencies and interest groups to inform all aspects of the Class EA process.

We will continue to collaborate with First Nation partners to develop the project together and drive local priorities forward. Through Hydro One’s industry-leading First Nation Equity Partnership Model, First Nation partners will have the opportunity to invest in a 50 per cent equity ownership stake in the transmission line component of this project.

Learn more
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See the route

Project map

As part of the Class EA process, the route alternatives have been identified through a review of Indigenous culture and values, technical, socioeconomic and natural environment considerations. The route alternatives will be studied and evaluated to eventually identify a preferred route for the new line.

Your feedback is important. We encourage you to view our interactive map and share your input.

View interactive map Download map (PDF)
Project map

See what's coming

Anticipated project schedule

September 2026
Notice of Commencement for the Class EA.
Summer/Fall 2026
Ongoing environmental studies, community engagement, feedback and info gathering to support the route evaluation.
Spring 2027
Selection of preferred route and continued community engagement.
Fall 2027
Public comment period for the draft Environmental Study Report.
Winter 2027
Submission of the final Environmental Study Report and completion of the Class EA assessment.
2028
Permitting and approvals.
Summer 2029
Construction start.
2033
New transmission line is in service, and construction is completed.
*Dates are subject to change.

Powering progress

Project benefits

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Indigenous communities

We offer training, employment and capacity-building opportunities, along with a 50 per cent equity ownership to proximate First Nations.

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Economic growth

We support increased economic investment in the region, locally-produced goods and services, and advanced manufacturing.

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Reliable energy

We’re improving electricity reliability across the region and strengthening northern Ontario's transmission network.

Guided by standards

Planning process

The project will follow the Class Environmental Assessment for Transmission Facilities, 2024 in accordance with the Ontario Environmental Assessment Act. This is an important part of the planning process to assess potential natural, economic, social and cultural effects, determine measures to avoid or minimize impacts and evaluate route options.

In addition to the Class EA, the project will require Ontario Energy Board approval under Section 92 (Leave to Construct) of the Ontario Energy Board Act, 1998

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What we shared

Public consultation documents

Notice of Commencement

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What these documents mean

These documents summarize the studies, project notices and resources shared during the consultation process. They explain how routes were evaluated, decisions were made and how we engaged with communities.

Answers at a glance

Frequently asked questions

What is the need for this new transmission line?

Ontario's demand for electricity is increasing. To meet this growing demand, the Independent Electricity System Operator (IESO) has identified the need for the Red Lake Transmission Line project. Once built, the project will provide additional capacity to the area and improve reliability in the Northwest.

What regional benefits can we expect from the line?

The Red Lake Transmission Line project is expected to strengthen regional reliability and reinforce the grid for newly-connected, northern communities and the broader region. Access to reliable electricity in northwest Ontario is essential to support local communities, enable economic growth and strengthen the northern Ontario transmission network.

Once built, the Red Lake Transmission Line will add approximately 400 megawatts of electricity capacity to northwest Ontario, enough to power a city the size of Thunder Bay twice. The line will be developed with local priorities in mind, and we'll continue to work with First Nation partners to incorporate local interests where possible.

How is feedback used as part of the Class Environmental Assessment process?

Your feedback is important to the successful development of this new transmission line. The local knowledge we receive helps us select a route that minimizes effects on the environment and community. Our team will continue to have meetings, workshops, and community open houses to help us gather information that considers the interests and needs of the communities.

Local knowledge about the environment, including the natural and socio-economic environment, was used to help inform the selection of alternative routes and will continue to be used during the evaluation to select a preferred route. Input from community members, Indigenous communities, elected officials, property owners, and other stakeholders help us throughout the evaluation process and identifying potential ways to avoid, mitigate or restore potential environmental effects from the project.

How is the preferred route identified?

Over the course of the Class EA, route alternatives are studied by collecting data from a variety of sources, including existing reports and plans, conducting environmental field surveys and technical assessments, as well as engagement opportunities to gather input and feedback.

Through technical analysis, we evaluate route alternatives to identify a preferred route. The analysis balances project-specific criteria in four categories: natural environment, socio-economic environment, Indigenous culture, values and land use, and technical and cost.

I received a letter indicating my property will be affected. How can I get more information?

At this stage of the project, our focus is on gathering information and feedback about route alternatives. No decisions about individual properties have been made.

Please contact us at community.relations@hydroone.com or 1-877-345-6799 to be connected to discuss next steps.

Contact us

We're here to help

To provide comments or to be added to the project contact list, please call or email:

1-877-345-6799

Land acknowledgement

Hydro One acknowledges that the Red Lake Transmission Line is located in the traditional territories of the Anishinaabe people of Treaty #3. The project also traverses the homelands of the Northwestern Ontario Métis Community. Hydro One understands that Indigenous Nations have been here since time immemorial and are stewards of what many refer to as Turtle Island. We are all Treaty People and with a commitment to friendship and our pursuit of reconciliation, we are thankful to be welcomed on these lands as partners so we can improve on our past and energize our combined futures.

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