About Us

Hydro One Sault Ste. Marie is an integral component of Ontario's transmission system that connects Northern Ontario to Southern Ontario and is the second-largest electricity transmitter in the Province. A subsidiary company of Hydro One Inc., Hydro One Sault Ste. Marie LP is regulated by the Ontario Energy Board.

We're proud to be the transmission company serving Sault Ste. Marie and the local region and are committed to reliable service, employee and public safety, environmental responsibility and enhancing the quality of life in the communities in which we serve. We manage the following assets in our service territory:

  • 560 km of 44 kV to 230 kV transmission lines

  • Steel towers

  • Wood and composite poles

  • Substations.

Regulatory Affairs

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Information about rate applications to the Ontario Energy Board, Delivery Point Performance, and the Hydro One MADD Application.

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Health and Safety

Our Commitment to Safety

At Hydro One Sault Ste. Marie, we are committed to excellence in everything that we do. However, our drive for excellence will not compromise our commitment to employee and public safety. Our commitments and expectations are documented in our Health, Safety & Environment Management System (HSEMS). This system provides the basis for everything we do in this important area.

All of our employees are committed to our safety system and are guided by them in their daily work. The HSEMS supports our people in providing safe service.

Environmental Policy

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We reinforce our Environmental Policy by investing in innovative programs that have a direct impact on local stakeholders and the communities in which we operate.

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Algoma District Wood Turtle Project

In 2006, Hydro One Sault Ste. Marie implemented a joint project with the Ontario Ministry of Natural Resources, the University of Guelph and the Community Involvement Fish & Wildlife Program (CFWIP) to determine wood turtle critical and suitable habitats in the District of Algoma, including areas near our transmission lines. Information was gathered to be used in managing this highly diverse multi-use area so that the wood turtle population will be protected and sustainable in the future.

Photo of a transmission corridor in Sault Ste. Marie

Corridors for Life Project

Hydro One Sault Ste. Marie, in partnership with a host of First Nations, environmental and academic stakeholder groups, initiated the Corridors for Life project, which is designed to help protect and restore habitat, fish and wildlife under Hydro One Sault Ste. Marie transmission lines.

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Algoma Highlands Conservancy

The Algoma Highlands Conservancy occupies a large portion of Hydro One Sault Ste. Marie’s Right of Way north of Sault Ste. Marie in the Goulais River area of our work activities.


Environmental Assessments

Environmental Screening Process

As part of Hydro One Sault Ste. Marie’s (HOSSM) due diligence process for minor transmission projects, HOSSM conducts environmental screening in accordance with a Category B project under the Environmental Screening Process as outlined in Ontario Regulation 116/01 and the document “Class Environmental Assessment for Minor Transmission Facilities” (Hydro One Class EA).

These Environmental Screening Reports (ESRs) summarize the results of the screening process.

There are no current projects at this time.



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Hydro One Sault Ste. Marie LP is committed to treating all people in a way that allows them to maintain their dignity and independence.

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Contact Us

Hydro One Sault Ste. Marie

2 Sackville Road, Suite B
Sault Ste. Marie, Ontario  P6B 6J6

Telephone: 705-254-7444
Monday – Friday, 8:00 a.m.– 4:30 p.m.

Emergency Telephone (24/7): 705-253-8333