3. From 2010 Colorado Utilities Report

4. Solar Energy Industries Association, Market Insight Report – 2011 Year In Review

8.  Mount type  10 watts per square foot  Usable roof space  Tilt, azimuth

10. Location, Location Part II Power in the wind Power in the wind Effect of air density,  Effect of air density,  Effect of swept area, A Effect of swept area, A Effect of wind speed, V Effect of wind speed, V R Power in the Wind = ½ρAV 3

12. “

13.  Same turbine, two different wind regimes: ◦ Yampa (8.3 mph)  1,200 kWh/year ◦ Sheep Mtn: (18.4 mph)  6,500 kWh/year

14. US DOE SolarWind

15. SolarWind

16. Looney and Greenstone, “Paying Too Much for Energy”, Daedalus, 2012

17.  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?