[urbancog]

I think the benefits of the utilidor for northern communities are that it avoids excavation in the permafrost, and the heat generated by the cables keeps the water and wastewater pipes from freezing. These aren't as relevant here in southern Ontario.

Some electricity transmission circuits in the City of Toronto were direct buried in the ground in the mid 1900s. However, for new transmission line work, in the City, Hydro One has chosen to build a new tunnel and mount insulated cables on the walls. Like this:

They currently have a project to replace two transmission circuits between Esplanade TS and Terauley TS. With the project web site here: https://www.hydroone.com/about/corporate-information/major-projects/power-downtown-toronto

In the mid-town corridor there are 3 circuits, with 9 individual conductors, so there would be 3 groups of 3 conductors instead of the 2 groups shown in the photo.

 

[rdaner]

So I finally ventured along here after living in the area for 5 years! Lots of little improvements. Am I correct in understanding that the transmission wires will be buried here or is that further east by Madison?

 

[jcam]

I think the benefits of the utilidor for northern communities are that it avoids excavation in the permafrost, and the heat generated by the cables keeps the water and wastewater pipes from freezing. These aren't as relevant here in southern Ontario.

Some electricity transmission circuits in the City of Toronto were direct buried in the ground in the mid 1900s. However, for new transmission line work, in the City, Hydro One has chosen to build a new tunnel and mount insulated cables on the walls. Like this:
View attachment 541872

They currently have a project to replace two transmission circuits between Esplanade TS and Terauley TS. With the project web site here: https://www.hydroone.com/about/corporate-information/major-projects/power-downtown-toronto

In the mid-town corridor there are 3 circuits, with 9 individual conductors, so there would be 3 groups of 3 conductors instead of the 2 groups shown in the photo.

The majority of lands for the London 2012 Olympic park were freed up pylon corridors, replaced by I think it was 3-5 tunnels like this.