Thermal

Diesel fuel is burned inside an engine. The combustion process causes the engine shaft to move, driving the generator to produce electricity.

Process

Studies

We hired Stantec to complete an inventory of possible new diesel and LNG sites. The study looked at potential 5, 10, and 20 MW plants.

Stantec identified four sites for consideration (two within Whitehorse and two just north of the city) and of those, two were chosen for further investigation: one at the Whitehorse landfill and the other next to the Takhini substation on the Mayo Road.

The zoning on both sites allows for public utilities, both are accessible from a highway, and both are close to transmission infrastructure.

Technical and Financial Findings

Annual Energy Firm Energy Installed Capacity Dependable Capacity Levelized Cost of Energy Levelized Cost of Capacity Project Life In-service Lead Time
GWh/yr GWh/yr MW MW $/kWh $/kW yr Years Years

Option #1

Whitehorse LNG

83.2 83.2 10 10 $0.23 $467 20 4

Option #2

Whitehorse Diesel

83.2 83.2 10 10 $0.29 $295 20 4

Option #3

Takhini LNG

83.2 83.2 10 10 $0.23 $467 20 4

Option #4

Takhini Diesel

83.2 83.2 10 10 $0.29 $293 20 4

Energy

Capacity

Evaluation

Aquatic environment Most favourable
Terrestrial environment Most favourable
Air quality Least favourable
First Nation lands Most favourable
Traditional lifestyle Most favourable
Heritage resources Most favourable
Tourism/recreation/other land uses Most favourable
Cultural/community well-being Somewhat favourable
Local economic benefits Least favourable
Climate change risk Most favourable
  •  Most favourable
  •  Somewhat favourable
  •  Least favourable

Notes

Diesel and LNG serve different purposes in terms of back-up electricity. Diesel engines tend to be better at picking up load quickly, such as in the case of a sudden power outage. However, natural gas engines are more efficient, and are better for running over longer periods of time.

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Initial key findings

Pros

Inexpensive to build

Reliable energy and capacity available all year

Cons

Produces GHG emissions