2 Large Service Area ◦ Copper Basin and Valdez Electrically isolated from neighboring utilities ...
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Transcript of 2 Large Service Area ◦ Copper Basin and Valdez Electrically isolated from neighboring utilities ...
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Large Service Area◦ Copper Basin and Valdez
Electrically isolated from neighboring utilities
50% Hydro / 50% Fossil Fuels Current Rates
◦ 18¢/kWh (Summer) to 30¢/kWh (Winter)
CVEA Overview
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Project Cost Potential Energy Output Environmental and Cultural Concerns Land Ownership Location to Existing Transmission
Infrastructure
Hydro Scoping Limitations
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Pre-Feasibility Study completed January 2011◦ Capacity 4.2-6.4 MW (37,000-45,000 MWh)◦ Multiple Land Owners
Chugach Alaska Regional Native Corporation Tatitlek Alaska Village Native Corporation
Lands rich with Alaska native cultural resources Conservation easements – Exxon Valdez Oil Spill
Trustee Council and Tatitlek Corporation USFS lands – Transmission line routing (roadless rule)
25 miles (138kV)
Silver Lake
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◦ Environmental Outlet regarded as a valuable natural salmon stream Large number of bird species in the area
Dense Eagle population
◦ Project Costs Estimated design and construction $157M Cost of power 31¢ to 41¢/kWh
Board of Directors concluded not to move forward on this project
Silver Lake
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Pre-Feasibility Study Completed – February 2008◦ FERC preliminary permit issued September 2008
Feasibility Study Completed – May 2010◦ 6 different options studied
Dam Storage (Option 3c) selected Difficult Construction
Site access, avalanche, glacial moraine Capacity 6.5 MW (22,000 MWh) Project Cost $63M
Cost of power 26¢/kWh
Allison Creek
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Change of Direction (Option 4a)◦ Final Feasibility Study addendum – January 2011
Run-of-River◦ No winter energy
Reduce risk utilizing a diversion structure◦ Capacity 6.5 MW (16,000 MWh to 23,300 MWh)◦ Construction Challenges
Steep terrain Short construction season Large amounts of snow
Allison Creek
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◦ Environmental Dolly Varden in bypass
reach of the creek Salmon downstream
of discharge◦ 4 miles of distribution
(25kV)◦ Project Cost $39M
Cost of power 21¢/kWh
Allison Creek
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FERC license application submitted August 2011◦ FERC Draft Environmental
Assessment - December 2012 Project Benefits
◦ Increases Hydro portfolio to 67%
◦ Displaces 1,100,000 gallons of diesel fuel annually
◦ Expands current hydro generation season
Allison Creek
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Financing options for Allison Creek Hydro◦ AK Renewable Energy Fund
CVEA awarded $2.2M◦ AK Power Project Loan Fund◦ AK SB25 – Loan Program◦ Direct state legislative appropriations
CVEA awarded $11M◦ Good project gets even better with Grant Funds
With grants, current cost of power 16¢/kWh
Construction scheduled to be completed October 2015
Allison Creek