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Northern Ontario

Wawa Timmins Power Line

Hydro One continues to support growth and improve reliability in northeast Ontario. Once built, the Wawa Timmins Power Line will drive economic development and provide a reliable electricity supply to support the substantial load growth expected for the region.

Expected completion date: 2030

Current project phase: Class Environmental Assessment (EA)

Open house info
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Project overview

Hydro One is a trusted operator of transmission infrastructure in northeast Ontario. As demand for energy in the region increases, we will continue to support growth and improve reliability. To meet expected needs, we are proposing to construct the Wawa Timmins Power Line, a new single-circuit, 500-kilovolt (kV) transmission line between Hydro One’s Wawa Transformer Station (TS) near Wawa and Porcupine TS in Timmins. The proposed work will also include a station near Wawa.

Project schedule

Project map

As part of the Class EA, we're studying route options for the proposed Wawa Timmins Power Line. This includes technical and environmental analyses, along with input from Indigenous communities, local residents and interested parties.

Your feedback will help shape the preferred route for this new 500-kilovolt transmission line. A draft Environmental Study Report will be available for public review soon.

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Project map

Community open houses

Timmins

Monday, July 7
4 to 8 p.m.

Royal Canadian Legion 287, 46 Legion Drive

Get directions

Chapleau

Tuesday, July 8
4 to 8 p.m.

Royal Canadian Legion 5, 33 Young Street

Get directions

Wawa

Wednesday, July 9
4 to 8 p.m.

Royal Canadian Legion 429, 51 Broadway Avenue

Get directions

Planning process

Rooted in engagement and consultation, the Class EA identifies and evaluates potential natural, economic, social and cultural impacts before construction can start. The proposed project will follow the Class EA for Transmission Facilities, 2024 (Class EA for TF), established in accordance with the Ontario Environmental Assessment Act.

The Class EA for TF is a streamlined planning process that applies to certain types of frequently occurring transmission infrastructure projects. Projects using the Class EA for TF will identify potential environmental impacts that can be mitigated, planned for and constructed in accordance with a common process. Following completion of the Class EA, the project will also require Ontario Energy Board (OEB) approval under Section 92 (Leave to Construct) of the Ontario Energy Board Act. The anticipated in-service date for the project is 2030.

Learn about the EA process
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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. Through Hydro One's industry leading 50-50 equity partnership model, we will offer proximate First Nations the opportunity to invest a 50 per cent equity stake in the transmission line component of the project.

Field

Project benefits

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Indigenous communities

We’re offering training, employment and capacity-building opportunities, along with 50 per cent equity ownership for proximate First Nations.

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Economic growth

We support increased regional investment, local goods and services and growth in advanced manufacturing and critical minerals mining.

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Reliable energy

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

Anticipated project schedule

June 2025
Notice of Commencement for the Class EA.
Summer until the end of 2025
Ongoing environmental studies, engagement, feedback and info gathering to help assess route alternatives.
End of 2025
Selection of preferred route.
Summer 2026
Public comment period for the draft Environmental Study Report.
End of 2026
Submission of the final Environmental Study Report and completion of the Class EA process.
2027
Permitting and mobilization.
Summer 2028
Construction starts.
December 2030
New transmission line is in-service, and construction is completed.
*Dates are subject to change.

Public engagement documents

Download the Notice of Commencement

Download Notice of Commencement - English Download Notice of Commencement - Francais Download Notice of Commencement - Anishnaabemowin Download Notice of Commencement - Cree

We're here to help

To provide comments or to be added to the project contact list, please connect with us

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