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Northeast Power Line

We energize life for communities in the northeast

At Hydro One, we support communities and businesses across Ontario and the growing need for safe and reliable power.

Expected completion date : 2029

Current project phase : Planning

Frequently asked questions
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Overview

We're dedicated to fostering growth in northeast Ontario. Once built, the Northeast Power Line will meet the increasing demand for energy that is driven by innovation and economic development. This new line will bring more power to the region and improve the overall resilience of the northern Ontario transmission network.

When completed, the 500-kilovolt line between Hanmer Transformer Station (TS) in Greater Sudbury and Mississagi TS near Wharncliffe will reinforce the transmission system in northeast Ontario and support the growing electricity demands of industries, businesses and residents.

We’re here to help you

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

1-877-345-6799

Join our community open houses

Elliot Lake

Wednesday,
November 26, 2025
3:00 p.m. - 7:00 p.m.

Elliot Lake Royal Canadian Legion Branch 561 10 Alberta Road, Elliot Lake

Get directions

Wharncliffe

Wednesday,
November 26, 2025
3:00 p.m. - 7:00 p.m.

Wharncliffe Community Hall 4847 ON-129, Wharncliffe

Get directions

Hanmer

Thursday,
November 27, 2025
3:00 p.m. - 7:00 p.m.

Hanmer Centennial Community Hall 4333 Centennial Drive, Hanmer

Get directions

Project details

The Northeast Power Line will extend from Hanmer TS in Greater Sudbury to Mississagi TS near Wharncliffe within an existing transmission corridor.

View interactive map
Project map

Our planning process

We will complete the planning and development of this new transmission line following an existing, approved environmental assessment (EA) from Hanmer TS to Mississagi TS. We've conducted field studies, including archaeology and natural heritage surveys, along the transmission corridor where findings will be included in the Environmental Report.

Learn about the EA Process
People sitting together talking

Our anticipated project schedule

March 2024
Announcement of the updated environmental requirements. Community open house #1: Introduction of project and presentation of route.
Fall 2025
Complete field studies. Community open house 2.
2027
Construction to follow approvals.
2029
Proposed line in-service.
*Dates are subject to change.

Public Consultation documents

Notice of Commencement

Download the Notice of Commencement (aussi disponible en français)

Announcement of environmental update - March 2024

Download the announcement of environmental update (aussi disponible en français)

Open house resources

November 2025
Download the in-person open house panels
July 2024
Download the Wharncliffe in-person open house panels
Download the Hanmer Transformer Station expansion map
Download the Hanmer Transformer Station area map

March 2024
Download the in-person open house panels (aussi disponible en français)
Download the indigenous relations panels

Frequently asked questions

What is the route for Northeast Power Line?

Hydro One is planning to construct a new 500 kilovolt transmission line within an existing right of way between our Hanmer TS and Mississagi TS. The new transmission line will be constructed in parallel to an existing transmission line already in operation within this corridor.

How long is the proposed line?

The new Northeast Power Line is approximately 205 km long.

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

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