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A new double circuit 72 kV transmission line is being planned to reinforce the electrical transmission system in northeast Edmonton. We are trying to determine the best route from the existing Namao Substation to the planned new substation west of 62 Street and 125 Avenue. After careful consideration, we have narrowed down the route options.
These will be a double circuit transmission line, which are two transmission lines using mostly one set of structures. By using double circuit transmission lines, we can meet the demand for electricity in the area with the least amount of transmission line routes and structures.
There are multiple paths we could take to get from the existing Namao Substation to the planned new substation. These routes are shown in dark blue on the map. These are shown in four segments: N1, N2, S1 and S2. Combinations could include:
If approved, the 72 kV transmission line will be built using mostly composite fiberglass or steel poles ranging in height from 18 to 24 metres. Some of the route options follow existing distribution power lines. In these areas, every second or third distribution pole would be replaced with a transmission pole. This will be a double circuit transmission line, which means there are two transmission lines using mostly one set of structures. The structures will have six transmission wires (three on each side) with one or two shield/fibre optic wires strung on top. Structures would be installed along the route using drills, excavators and other equipment. A crane would be used to attach the wires in stages to reduce impacts to roadways.
A right-of-way is the area we need to safely operate and maintain our power lines. EPCOR manages the right-of-way to prevent objects from contacting the wires, this includes trees and other vegetation. Our tree maintenance program monitors vegetation in the right-of-way and ensures that trimming is completed when required. In some situations, this could extend outside of the right-of-way.
The right-of-way for the 72 kV transmission line would be 14 meters (7 metres on each side of the structure). Areas where the right-of-way overlaps with private property will require an easement between EPCOR and the property owner. You will be contacted directly if your property overlaps with the right-of-way. There are no development restrictions outside of the right-of-way.
This project would require changes to the Namao Substation. If approved, the substation fence will be expanded approximately 15 metres to the west (as shown in green). Two new structures would also be installed within the substation to connect the new transmission lines to existing equipment.
If approved, the 72 kV transmission line will be built using mostly composite fiberglass or steel poles ranging in height from approximately 18 to 24 metres. Many of the route options follow existing distribution power lines. In these areas, every second or third distribution pole would be replaced with a transmission pole that has the transmission wires on top and the distribution wires and equipment attached below (as shown on the structure image below).
This will be a double circuit transmission line, meaning it will have six wires strung across the structures and one or two shield wires strung on top. A double circuit transmission line is two transmission lines using mostly one set of structures. This way we can decrease the number of transmission line routes and meet the demand for electricity in the area.
Non-typical structures such as double poles, poles with wider bases, and the use of guy wires may be required at certain locations along the line, including where the line turns corners or has to span longer distances.
Photo of a similar transmission line The poles for this project will look similar to the image above except they will have 6 wires on top (three on each side). Exact details may change based on finalized design.
EPCOR believes in listening to and engaging stakeholders. Community input and involvement is an important part of our decision-making. We believe in working towards solutions together and consulting with the public on initiatives. If you have any questions or would like to provide input on this project, please contact us.
Ph: (780)412-8800Email: CETR@epcor.com Online: Submit a form with your feedback Complete feedback form
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