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Piperville Municipal Transformer Station Project

Media release received from Hydro Ottawa:

March 2020 - September 2026 To ensure Ottawa’s eastern region has the power to grow, Hydro Ottawa has initiated a Class Environmental Assessment (Class EA) study for the construction of a new 27.6kV municipal transformer station in the southeast end of the city of Ottawa. What will this project include? The Piperville Municipal Transformer Station project proposes:

  • to construct a new 27.6kV municipal transformer station (MTS) at the intersection of Piperville Road and Farmers Way (located on the west side of Highway 417); and

  • to connect the new power station to Hydro One’s existing 230kV transmission line, also located on the west side of Highway 417.

As part of our sustainability commitments, Hydro Ottawa intends to develop Piperville as a low-carbon substation. We are currently undertaking a full project review of the station’s construction, including an innovative design, procurement and construction techniques that include using lower Global Warming Potential (GWP) materials, and equipment that will address embodied carbon associated with the construction and operation of the substation. Why we are moving forward with this project The need for new facilities was identified through the Integrated Regional Resource Plan (IRRP) for the Ottawa area. Released in March 2020, the IRRP is a twenty-year plan that has been developed by a regional planning working group consisting of the Independent Electricity System Operator (IESO), Hydro Ottawa and Hydro One. This project will support projected growth in electricity demand for the area and provide redundancy to our system in the event of future extreme weather events. The Piperville Municipal Transformer Station is one of many future-planning projects we are spearheading to make our electricity system as resilient, and as sustainable, as possible. The existing Hydro Ottawa station in the area does not have the capacity to supply anticipated future demand in this part of the city. We look forward to speaking with you Consultation is an important part of the Class EA process. Members of the public are invited to attend our upcoming community information sessions to learn about the project, speak directly to members of our project team, and provide feedback. Please join us at one of these sessions: Community Information Session 1 (virtual) April 20, 2023, 12:00 p.m. - 1:00 p.m. Register: Community Information Session 1 (in-person) April 20, 2023, 7:00 p.m. - 9:00 p.m. Anderson Links Golf Club, 4175 Anderson Road Contact If you have questions about the project, or you would like to receive project updates, including information about upcoming community information sessions, join our mailing list. Email us at

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