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STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Presentation Overview
• Background on STG• Alaska Utility Scale Wind Systems
– STG Involvement– Project Costing
• Innovation through Construction Process• Rural Infrastructure Spending Trends• Challenges and Opportunities
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Statewide Construction Services and Management
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
STG Wind Power Projects
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
CLIENT LOCATION TURBINES CAPACITY (KW)
AVEC Selawik 4 260
AVEC Toksook Bay 3 300
AVEC Kasigluk 3 300
AVEC Hooper Bay 3 300
AVEC Savoonga 2 200
AVEC Gambell 3 300
AVEC Mekoryuk 2 200
AVEC Chevak 4 400
AVEC Quinhagak 3 300
TDX St. Paul 2 450
TDX Tin City 2 450
BSNC Nome 18 1170
IES Kongiganak 5 475
UVEC Unalakleet 6 600
TOTAL: 14 60 5,705
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
A Typical STG Wind Project
Expense Category %Turbine Procurement 38%Interconnect Line Work 14%Labor 14%Materials 13%Freight 10%Equipment 8%Other 2%Services 1%Travel 1%
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Rural Wind Construction
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Approximate Wind System Costs
Location Region KWTurbine
sManufacture
r CompletedProject
Cost $/KWSelawik SW 260 4 AOC 2004 $1,372,000 $5,277 Kasigluk SW 300 3 Northern 2006 $3,076,000 $10,253
Toksook Bay SW 300 3 Northern 2006 $3,352,551 $11,175 Savoonga W 200 2 Northern 2008 $3,005,794 $15,029 Tin City W 225 1 Vestas 2008 $1,900,000 $8,444 Nome W 900 18 Entegrity 2008 $5,657,000 $6,286
Hooper Bay SW 300 3 Northern 2008 $3,197,668 $10,659 Gambell W 300 3 Northern 2009 $3,716,506 $12,388 Chevak SW 400 4 Northern 2009 $3,471,978 $8,680
Kongiganak SW 475 5 Windmatic 2009 $4,200,000 $8,842 Totals: 3660 46 AVERAGE $9,578
Source: Denali Commission Records / Alaska Energy Authority
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Construction Cost Containment
Expense Category %Turbine Procurement 38%Interconnect Line Work 14%Labor 14%Materials 13%Freight 10%Equipment 8%Other 2%Services 1%Travel 1%
• Majority of project expenses are incurred with the purchase of WTGs
• Project interconnect costs vary significantly depending on location from existing infrastructure
• Some flexibility in equipment spread, but utilization of heavy equipment improves construction/erection safety and efficiency
• Biggest opportunity for construction cost savings realized through foundation design
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Foundation Solutions
Foundation Location Year
Driven Pile St. Paul 2002Rock Anchor Sealwik 2004Driven Pile Toksook Bay 2005Helical Pile Kasigluk 2006Driven Pile Hooper Bay 2008Driven Pile Savoonga 2008
Poured Concrete Tin City 2008Rock Anchor Nome 2008
Driven Pile Kongiganak 2009Driven Pile Chevak 2009Driven Pile Mekoryuk 2009
Poured Concrete Unalakleet 2009Poured Concrete Gambell 2009
Pre-Cast Concrete Quinhagak 2009
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Toksook Bay Foundation
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Banner Ridge Foundation
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Quinhagak Foundation
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Wind-Diesel Integration and Objectives
http://northernpower.kiosk-view.com/unalakleet
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Challenges Faced with Energy Cost Escalation
RESIDENTSRESIDENTS
COMMERCIALCOMMERCIAL
SERVICESSERVICES
STATE AND FEDERAL
ASSISTANCE
STATE AND FEDERAL
ASSISTANCE
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Alaska Trends in Federal Spending
Source: The Tax Foundation, Washington, D.C
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Federal and State Capital Project Spending (1990-2008)
Kasigluk Toksook Bay Selawik Hooper Bay SavoongaWind Generation $ 2,503,961 $ 3,030,000 $ 1,315,012 $ 3,127,668 $ 1,554,697 Other Energy Infrastructure $ 11,551,558 $ 11,835,516 $ 9,377,153 $ 507,887 $ 7,603,263 Health/Sanitation $ 23,795,520 $ 14,608,238 $ 19,899,144 $ 29,428,452 $ 22,021,436 Transportation $ 15,444,175 $ 14,161,939 $ 16,573,713 $ 13,589,129 $ 16,711,667 Education $ 8,828,704 $ 34,862,293 $ 25,000,000 $ 32,269,036 $ 32,233,568 Other Development $ 4,812,826 $ 3,291,548 $ 11,787,939 $ 16,850,229 $ 30,742,250 TOTAL $ 66,936,744 $ 81,789,534 $ 83,952,961 $ 95,772,401 $ 110,866,881
Population 545 610 828
1,149
712 Per Capita Spending $ 122,820 $ 134,081 $ 101,392 $ 83,353 $ 155,712
Source: AK Division of Community and Regional Affairs
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Federal and State Capital Project Spending (1990-2008)
Source: AK Division of Community and Regional Affairs
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Typical Village Infrastructure
REQUIRE AFFORDABLE ENERGY TO BE SUSTAINABLE
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Current Energy Delivery in Rural Alaska
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Potential Energy Delivery in Rural Alaska
STG Incorporated 11820 South Gambell Street Anchorage, AK 99515 www.stgincorporated.com
Opportunities with Dispatchable Energy
Concept Credit: Dennis Meiners, Intelligent Energy Systems
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