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Published byOliver Townsend Modified over 9 years ago
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Wind Turbines: Power for a House or City *many slides from L. Sankar
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Ready to Become a Significant Power Source With annual growth rates of ~30%, wind could generate 20% of nation’s electricity by 2020. Installed capacity = 35,000 MW as of Dec 2009 (<1% national electricity). Source: Energy Information Agency
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Wind is Growing Worldwide Source: AWEA’s Global Market Report MW end 2007new 2008 total
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Global Electricity Consumption: 5,000 GW
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U.S. Wind Power Capacity Growth: is the rollercoaster over?
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Advantages of Wind Power Clean Flexible Large Potential for Growth Economically Viable (most of the time – peak opportunity)
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Benefits of Wind Power Environmental No air pollution No greenhouse gasses Does not pollute water with mercury No water needed for operations
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Benefits of Wind Power Economic Development Expanding Wind Power development brings jobs to rural communities Increased tax revenue Purchase of goods & services
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Benefits of Wind Power Fuel Diversity Domestic energy source Inexhaustible supply Small, dispersed design reduces supply risk
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Benefits of Wind Power Cost Stability Flat-rate pricing can offer hedge against fuel price volatility risk (fuel is “free”!) Electricity is inflation-proof
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Wind Power Economics
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Wind Power Cost of Energy Components Cost ( ¢ /kWh) = (Capital Recovery Cost + O&M) / kWh/year –Capital Recovery = Debt and Equity Cost –O&M Cost = Turbine design, operating environment –kWh/year = Wind Resource
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Construction Cost Elements
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Cost Nosedive Driving Wind’s Success
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Turbine Technology Constantly Improving Larger turbines Specialized blade design Power electronics Computer modeling produces more efficient design Manufacturing improvements
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How big is a 2.0 MW wind turbine? This picture shows a Vestas V-80 2.0-MW wind turbine superimposed on a Boeing 747 JUMBO JET
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Improved Capacity Factor Capacity Factors Above 35% at Good Wind Sites –Performance Improvements due to: –Better siting –Larger turbines/energy capture –Technology Advances –Higher reliability Examples: Project Performance (Year 2000) Big Spring, Texas 37% CF in first 9 months Springview, Nebraska 36% CF in first 9 months
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Offshore wind: a controversial gold mine of energy
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“CAPE WIND”: stay tuned…
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All offshore wind farms plagued by NIMBY concerns
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