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Electricity transmission is the movement of electrical energy at high voltage. Transmission infrastructure includes the lines, poles that support the lines, and substations.
Midgard Consulting did an evaluation of the operations for eleven transmission routes of interest.
The routes were identified through a process that considered connecting future generating resources with the existing transmission system. The evaluation considered things such as building and operating costs, power transfer capacities, and development schedules.
The routes evaluated include:
|Transmission Route||Voltage||Length||Reliable Transfer Capacity||Capital Expenditure||Operation Expenditure||Project Life||In-service Lead Time|
Faro to Finlayson
Faro to Watson Lake
Aishihik to Destruction Bay 1
Aishihik to Destruction Bay 2
Whitehorse to Skagway 1
Whitehorse to Skagway 2
Whitehorse to Atlin
Whitehorse to Teslin
Whitehorse to Squanga – Dalayee
Whitehorse to Atlin – Mt. Black
Whitehorse to Tutshi – Windy Arm
Whitehorse to Racine – Moon Lake – Tutshi
Whitehorse to Lindeman
Jake’s Corner to Atlin
Whitehorse to Atlin
|Aquatic environment||Most favourable|
|Terrestrial environment||Somewhat favourable|
|Air quality||Most favourable|
|First Nation lands||Somewhat favourable|
|Traditional lifestyle||Most favourable|
|Heritage resources||Most favourable|
|Tourism/recreation/other land uses||Most favourable|
|Cultural/community well-being||Most favourable|
|Local economic benefits||Somewhat favourable|
|Climate change risk||Somewhat favourable|
There are a number of risks that must be considered related to developing transmission corridors. There are meteorological risks such as extreme cold, snow and wind. Geotechnical risks include permafrost, exposed bedrock, and steep slopes. Social risks are related to permitting on First Nations settlement land, urban or populated areas, and recreational/park areas. Finally, there are political risks related to transmission lines that would cross the Yukon border into Alaska or British Columbia.
Some may be difficult to permit