Gemmell Substation

Greater Sudbury Hydro is committed to continually modernizing and upgrading the local distribution system to better serve you, our customer. As part of our Distribution System Plan Capital program, this construction season we will be upgrading the 53-year old Gemmell T1 Substation, located on the corner of Gemmell Street and Barrydowne Road.

We will be installing a new transformer to double the capacity, adding new controls to enable more remote operations now and in the future, and while the new substation will look similar to what is currently in place, the footprint will be enlarged to adhere to modern standards and clearance requirements.  We will also replace overhead powerlines along Gemmell St.  (from Barrydowne to Attlee) and Attlee Ave. (from Gemmell to the train tracks).  These upgrades will improve the reliability and resilience of the distribution system in the New Sudbury area fed from Gemmell T1.

Work on this project has been delayed by the current COVID-19 situation, however we do expect this project to proceed this construction season with a completion target of December 31, 2020.

FAQ

  • What is going to be updated?
    • We are installing a new transformer and doubling the transformer size from 5/6.67MVA to 10/13.33MVA, which will increase the capacity of the substation and allow us to shift some of the Gemmell T2 load to Gemmell T1. That will enable additional capacity to supply future demand in the Kingsway area, when and if, it should occur from T2.
    • We are adding new controls which will enable more remote operation now and in the future.
    • While the substation will look very similar to what is currently in place; the footprint will be larger due adherence with modern standards and clearance requirements and a new outside perimeter wall and gate that will also be installed.
    • Most of the trees and shrubs around the existing fencing must be removed to accommodate the larger footprint; as well as to eliminate tree roots growing into the underground power lines and branches growing into the overhead power lines. Landscaping around the new substation will be completed as soon as possible.
    • We are also upgrading overhead power lines along Gemmell Street (from Barrydowne to Attlee) and Attlee Avenue (from Gemmell to the train tracks).
    • These upgrades will improve the reliability and resilience of the distribution system in the New Sudbury area, for customers who are fed their electricity from Gemmell T1.
  • How will this renewal affect my neighbourhood?
    • After completion the Gemmell T1 Substation will have improved reliability and continue to provide safe, dependable power for decades to come.  Substations are 50-year assets and the renewed Gemmell T1 Substation will be equipped to handle technological changes as they evolve.
    • You will notice some external physical changes to the existing substation:
    • Larger footprint and expanded enclosed area.
    • Removal of existing trees, to be replaced with new landscaping when possible.
    • Neighbours in the immediate area of the substation will first notice significant activity during decommissioning (date delayed due to COVID-19), as existing equipment (switchgear, power transformer, and the old E-House structure) are removed using a crane and transport truck and trailer. This should take a few days.
    • Throughout the construction period appropriate fencing will be in place for site safety and construction site access.
    • Other things you may notice:
    • All work will conform to the city noise by-law which limits activity between 7am and 10 pm. Work will typically begin about 7am and continue for 10-12 hours per day. Some noise may result from demolition and civil construction portions of the project due to heavy equipment (dump trucks, concrete trucks, excavators, transports for deliveries, etc.).
    • Contractors are required to use dust mitigation techniques to minimize the impact on adjacent properties.
    • You may see an increase in heavy truck traffic periodically.
    • From time to time, it may be necessary to close all or part of the adjacent streets, subject to permit by the CGS, though we hope to minimize traffic disruptions, particularly on Barrydowne Road.
    • While no power outages are anticipated directly related to the substation work, when we replace the lines along Gemmell and Attlee, a few short power interruptions will be planned to allow cut-overs.
    • Notice will be provided to affected customers prior to those interruptions.
  • When will the project begin?
    • We had planned for restringing to start in April and demolition in late May, however, recent events have caused us to revisit our project timelines.  We do expect this project to proceed during the 2020 construction season.
    • When will the project be completed?
    • The project is expected to be completed by the end of 2020, with all new equipment in service and functioning by that time. There may be delays due to COVID-19, which could impact the project schedule.
  • How many customers will be affected by this substation upgrade?
    • The Gemmell T1 Substation currently distributes electricity to about 1,000 customers in the New Sudbury area.
  • How much will the project cost? 
    • Modernization of the 53-year old Gemmell T1 Substation is projected to cost roughly $2.48 Million.  This is part of our regular Capital Budget, approved by the Ontario Energy Board.
  • Will the new transformers be noisy?
    • No. As a matter of fact, the new equipment will be quieter than what is currently in place.
    • If you would like more information on this project or would like to submit feedback or comments, please complete the form below and someone will contact you.

Project Timeline

  • Work on this project has been delayed by the current COVID-19 situation, however we do expect this project to proceed this construction season with a completion target of December 31, 2020.
  • There may be some noise due to heavy equipment in the demolition and civil construction phases, however all work will conform to the CGS noise by-law, and will typically begin at 7am and continue for 10-12 hours per day.
  • This is a major project with a budget of approximately $2.48M, which is already approved by the Ontario Energy Board as part of our regular Capital Budget.
    If you would like more information on this project, or would like to comment, please use the form below.
    All comments will be reviewed, and referred to the appropriate person. If a response is required, you will be contacted directly.
  • Please note that the COVID-19 situation may affect the construction timeline.

Feedback Form - Gemmell Substation

Feedback form for customers to submit comments or questions about the Gemmell project.
  • This field is for validation purposes and should be left unchanged.

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