Sustainable Energy Opportunities: Best Practices for Alaska Tribes

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residential wind energy systems cost between $3,000 and $5,000 to install per kW of generating capacity. The payback period varies according to average energy prices. The Department of Energy has published a detailed manual on residential wind installation that provides information on deciding on the cost effectiveness of small wind installation and resources for design and construction.  Alaska Consumer’s Guide for Small Wind Electric Systems – Department of Energy http://www.windpoweringamerica.gov/pdfs/small_wind/small_wind_ak.pdf  Federal tax credit webpage for residential wind turbines http://energystar.supportportal.com/link/portal/23002/23018/Article/33338/Is-there-a-tax- credit-for-residential-small-wind-turbines Wind fast facts:  Most well developed clean energy technology (benefit of many years of trial and technology improvements)  Wind potential varies by region, but generally high along the coast  Energy storage to stabilize energy output is not cost-effective  Wind-diesel hybrid systems help stabilize variable output of wind  Large scale projects that require more development and training  Local wind technicians to maintain wind systems reduces operation costs SOLAR “The old man pointed his finger to the sun and to the moon. ‘These two take care of the earth. The sun keeps the cold climate away from this land.’” ~ Inupiat Legend of Aungayoukuksuk7 Though solar energy is limited in Alaska by climate and geographic locations, the benefit is that the necessary technology or infrastructure is relatively low maintenance and requires little input after installation. Unfortunately, while energy storage methods have been attempted in the effort to reduce the energy output variation of solar energy and to extend use into less sunny months, few have shown to be efficient enough or cost effective to be worthwhile.8 7 From People of Kauwerak: Legends of the Northern Eskimo, by William A. Oquilluk. 8 Energy storage methods that have been tested include a project in the United Kingdom using solar energy to spin a 275 ton flywheel, the momentum from which supplied electrical energy during the nonproductive periods. Other examples include using solar thermal energy to heat ground rocks that then provide heaenergy during the winter. However, these techniques remain in the early testing phases. Sustainable Energy Opportunities: Best Practices for Alaska Tribes Page 28

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