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Economics of Energy Systems in Rural Alaska

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Presentation on theme: "Economics of Energy Systems in Rural Alaska"— Presentation transcript:

1 Economics of Energy Systems in Rural Alaska
Business of Clean Energy Conference STG Incorporated Jim St. George STG Incorporated  South Gambell Street  Anchorage, AK 

2 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

3 Statewide Construction Services and Management

4 STG Wind Power Projects
CLIENT LOCATION TURBINES CAPACITY (KW) AVEC Selawik 4 260 Toksook Bay 3 300 Kasigluk Hooper Bay Savoonga 2 200 Gambell Mekoryuk Chevak 400 Quinhagak TDX St. Paul 450 Tin City BSNC Nome 18 1170 IES Kongiganak 5 475 UVEC Unalakleet 6 600 TOTAL: 14 60 5,705 STG Incorporated  South Gambell Street  Anchorage, AK 

5 A Typical STG Wind Project
Expense Category % Turbine Procurement 38% Interconnect Line Work 14% Labor Materials 13% Freight 10% Equipment 8% Other 2% Services 1% Travel

6 Rural Wind Construction

7 Approximate Wind System Costs
Location Region KW Turbines Manufacturer Completed Project Cost $/KW Selawik SW 260 4 AOC 2004 $1,372,000 $5,277 Kasigluk 300 3 Northern 2006 $3,076,000 $10,253 Toksook Bay $3,352,551 $11,175 Savoonga W 200 2 2008 $3,005,794 $15,029 Tin City 225 1 Vestas $1,900,000 $8,444 Nome 900 18 Entegrity $5,657,000 $6,286 Hooper Bay $3,197,668 $10,659 Gambell 2009 $3,716,506 $12,388 Chevak 400 $3,471,978 $8,680 Kongiganak 475 5 Windmatic $4,200,000 $8,842 Totals: 3660 46 AVERAGE $9,578 Source: Denali Commission Records / Alaska Energy Authority

8 Construction Cost Containment
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 Expense Category % Turbine Procurement 38% Interconnect Line Work 14% Labor Materials 13% Freight 10% Equipment 8% Other 2% Services 1% Travel

9 Foundation Solutions Foundation Location Year Driven Pile St. Paul
2002 Rock Anchor Sealwik 2004 Toksook Bay 2005 Helical Pile Kasigluk 2006 Hooper Bay 2008 Savoonga Poured Concrete Tin City Nome Kongiganak 2009 Chevak Mekoryuk Unalakleet Gambell Pre-Cast Concrete Quinhagak

10 Toksook Bay Foundation

11 Banner Ridge Foundation

12 Quinhagak Foundation

13 Wind-Diesel Integration and Objectives

14 Challenges Faced with Energy Cost Escalation
RESIDENTS Electricity Heating Transportation STATE AND FEDERAL ASSISTANCE COMMERCIAL SERVICES

15 Alaska Trends in Federal Spending
Source: The Tax Foundation, Washington, D.C

16 Federal and State Capital Project Spending (1990-2008)
Kasigluk Toksook Bay Selawik Hooper Bay Savoonga Wind Generation $ ,503,961 $ ,030,000 $ ,315,012 $ ,127,668 $ ,554,697 Other Energy Infrastructure $ ,551,558 $ ,835,516 $ ,377,153 $ ,887 $ ,603,263 Health/Sanitation $ ,795,520 $ ,608,238 $ 19,899,144 $ ,428,452 $ ,021,436 Transportation $ ,444,175 $ ,161,939 $ 16,573,713 $ ,589,129 $ ,711,667 Education $ ,828,704 $ ,862,293 $ 25,000,000 $ ,269,036 $ ,233,568 Other Development $ ,812,826 $ ,291,548 $ 11,787,939 $ ,850,229 $ ,742,250 TOTAL $ ,936,744 $ ,789,534 $ 83,952,961 $ ,772,401 $ 110,866,881 Population 545 610 828 1,149 712 Per Capita Spending $ ,820 $ ,081 $ ,392 $ ,353 $ ,712 Source: AK Division of Community and Regional Affairs

17 Federal and State Capital Project Spending (1990-2008)
Source: AK Division of Community and Regional Affairs

18 Typical Village Infrastructure
Power Plant School Health Clinic Communications Water & Sewer Transportation/Airport Post Office REQUIRE AFFORDABLE ENERGY TO BE SUSTAINABLE

19 Current Energy Delivery in Rural Alaska
Supply Demand Supplemental Electricity Supplemental Heat Diesel (Relatively) Small Wind

20 Potential Energy Delivery in Rural Alaska
Supply Demand Primary Electricity Primary Heat Water Treatment Regional Energy Distribution Diesel Large Wind

21 Opportunities with Dispatchable Energy
Concept Credit: Dennis Meiners, Intelligent Energy Systems


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