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for each potential energy option.
Pumped storage uses surplus energy to pump water from a lower reservoir to a higher one. When there is need for additional electricity, the water is released back into the lower reservoir through turbines, generating power in the process. Here in Yukon, water would be stored during the summer, for use in winter when demand for electricity is high.
Knight-Piesold, Picacho & Associates and Midgard were hired to complete an inventory of potential pumped storage projects in Yukon.
The assessment identified viable project sites within 25 kilometres of existing or potential transmission infrastructure. The top seven sites were chosen for further study based on construction cost. A 2015 Midgard report on the Moon Lake Pumped Storage Project was used in completing this assessment.
|Annual Energy||Firm Energy||Installed Capacity||Dependable Capacity||Levelized Cost of Energy||Levelized Cost of Capacity||Project Life||In-service Lead Time|
|Terrestrial environment||Somewhat favourable|
|Air quality||Most favourable|
|First Nation lands||Somewhat favourable|
|Traditional lifestyle||Most favourable|
|Heritage resources||Somewhat favourable|
|Tourism/recreation/other land uses||Somewhat favourable|
|Cultural/community well-being||Least favourable|
|Local economic benefits||Most favourable|
|Climate change risk||Most favourable|
Typically pumped storage facilities provide energy storage in the order of hours or days. Yukon Energy would use this system to store water in the summer, when energy demand is lower, for use during the winter months when demand is highest.
The assessment identified sites based on a 15 MW and 25 MW capacity as well as 50 GWh and 100 GWh of storage for each.
Option for addressing need for winter energy and capacity
Very expensive energy
Fairly expensive capacity