Internacionais

IEA - International Energy Agency
http://www.iea.org/

Natural Resources Canada's Office of Energy Efficiency
http://oee.nrcan.gc.ca

U.S.A. Department of Energy (DOE)
http://www.doe.gov

U.S. DOE Office of Energy Efficiency and Renewable Energy
http://www.eere.energy.gov/

American Coucil for an Energy-Efficient Economy
http://www.aceee.org

World Energy Council
http://www.worldenergy.org