Thunder Bay Hydro Coporation

Serving the City of Thunder Bay with electricity.

Call Before You Dig

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For your safety, before you do any digging in an area where there may be underground cables, you should place a request for a locate service.

ON1Call 1-800-400-2255

ON1Call will help you to identify companies who may have underground cables and forward a locate request to each of these companies.

Call ON1Call when digging for:

  • tree planting
  • party tents
  • children's inflatable activity centres
  • fence posts
  • decks
  • pool excavation
  • anytime you are going to put an anchor peg or shovel in the ground

 Thunder Bay Hydro will receive the request and provide an underground cable location service at no charge during normal working hours within 5 working days from your request.

We mark the location of any buried line in RED, so you know where you can dig safely. For guidelines regarding how to proceed near buried cables, read the Electrical Safety Association GUIDELINE FOR EXCAVATION NEAR UTILITY LINES.

Making contact with underground power lines can cause serious injury - even death, so please call ahead.

Following up with Thunder Bay Hydro

If you need to follow-up on a locate request, you must have a ticket number from the ON1Call service before you follow the prompts on our Thunder Bay Hydro main line 343-1111 to connect with our locates staff.

Freeze Up Period

Thunder Bay Hydro discontinues underground service installations during the normal Freeze Up period of mid November to mid May each year.

To be eligible for installation prior to Freeze Up, a service must have an Electrical Safety Authority inspection completed by November 1 of each year.

During this period, all customers, including residential customers in subdivisions, will be responsible for the digging and backfilling of their own trench for all underground services.

For any further information and options, please contact Thunder Bay Hydro Power Systems at 343-1176.