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Are Renewables Right for Me?

Are Renewables Right for Me?. From 2010 Colorado Utilities Report . Solar – Small but Growing. Solar Energy Industries Association, Market Insight Report – 2011 Year In Review. Wind – Small but REALLY Growing. How Solar Works. How Wind Works. Location, Location. Mount type

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Are Renewables Right for Me?

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  1. Are Renewables Right for Me?

  2. From 2010 Colorado Utilities Report

  3. Solar – Small but Growing Solar Energy Industries Association, Market Insight Report – 2011 Year In Review

  4. Wind – Small but REALLY Growing

  5. How Solar Works

  6. How Wind Works

  7. Location, Location • Mount type • 10 watts per square foot • Usable roof space • Tilt, azimuth

  8. Sunny Days

  9. Location, Location Part II • Power in the wind • Effect of air density,  • Effect of swept area, A • Effect of wind speed, V Power in the Wind = ½ρAV3 R

  10. Put turbines in areas of high winds

  11. “Micro-Siting” to maximize generation at a site “

  12. Effect of wind speed on production • Same turbine, two different wind regimes: • Yampa (8.3 mph) • 1,200 kWh/year • Sheep Mtn: (18.4 mph) • 6,500 kWh/year

  13. Costs US DOE Solar Wind

  14. Costs II Solar Wind

  15. Costs III Looney and Greenstone, “Paying Too Much for Energy”, Daedalus, 2012

  16. Payback: An Example • A solar PV system costs $8,000 • It will generate 5,000 kWh of free electricity every year • Each kWh currently costs $0.10 • How many years will it take to get back the $8,000?

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