Bibliografia:
http://pt.wikipedia.org/wiki/Energia_solar
http://pt.wikipedia.org/wiki/Energia_e%C3%B3lica
http://www.alentejolitoral.pt/PortalRegional/PublishingImages/Indústria/energia%20solar2.jpg
http://br.geocities.com/saladefisica5/leituras/solar10.JPG
http://www.construirportugal.com/docs/Painel_Solar.jpg
http://upload.wikimedia.org/wikipedia/commons/3/33/Mafate_Marla_solar_panel_dsc00633.jpg
http://farm1.static.flickr.com/204/447548233_b4d9c05502_o.jpg
http://www.aceav.pt/blogs/alopes/Imagens/eolica-01.jpg
http://interioreolico.wordpress.com/a-energia-eolica/vantagens-e-desvantagens/
http://www.geocities.com/CollegePark/Den/9002/eol-gerad2.JPG
http://machadorod94.googlepages.com/dggdfhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.jpg/dggdfhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh-full;init:.jpg
http://www.cec2.com.pt/imagens_botoes/PAINEL%20SOLAR.JPG
http://www.gstriatum.com/energiasolar/articulosenergia/imagenes/18_energia_solar.jpg
http://www.riobranco.org.br/arquivos/sites2008/6_agosto/grupo2/JuiceBox/imagens/eolica10.jpg http://www.osorio.rs.gov.br/imagens/eolica/02.jpg