http://www.pennenergy.com/index/power/display/1636155725/articles/pennen...
http://www.renewablesbiz.com/article/11/12/state-renewables-standards&ut...
http://thinkprogress.org/romm/2011/12/11/387108/solar-power-much-cheaper...
http://www.energybiz.com/article/11/02/wind-shortfalls-make-grid-guys-ne...
http://www.ucsusa.org/clean_energy/technology_and_impacts/impacts/freshw...
http://www.commondreams.org/view/2011/12/10-1
http://inhabitat.com/german-village-produces-321-more-energy-than-it-nee...