Energia Alternativa - Wind - Solar - Termal Mass etc

http://youtu.be/WkFtg9yCRNM

http://youtu.be/0_P9XDKQP34


http://www.technowind.eu/?gclid=CLOYn7mW8KgCFWNx5QodcDKWCg

http://www.urbanwindenergy.org.uk/index.asp?PageID=42

http://www.urban-wind.org/pdf/SMALL_WIND_TURBINES_GUIDE_final.pdf

http://wind-do.com/web/Site%20Anglais/urban%20wind%20turbine.html

http://wind-do.com/web/PDF/E%20urban%20wind%20turbine.pdf

http://www.chinahummer.cn/?gclid=COKzrcyY8KgCFUWA5QodgwrSLQ