General Direction of Energy and Geology - www.dgge.pt
Energy Direction of the EU - www.europa.eu.int
Renewable Energies - www.energiasrenovaveis.com
Energetic Efficiency - www.eficiencia-energetica.com

Agency for the Energy PT - www.adene.pt
Agency for the Energy EU - www.agores.org
Association of Renewable Energies PT - www.apren.pt
Association of Renewable Energies EU - www.eurec.be

Energy Saving in Spain - www.idae.es
Energy Saving in France - www.ademe.fr
Energy in the United Kingdom - www.energyinst.org.uk
Energetic Efficiency in the USA - www.eere.energy.gov