Energy

Database(s)

MetaEfficient: A Guide to the Most Efficient Things in the World
http://www.reactual.com
Reviews of countless products on their energy efficiency.

Renewable Energy Atlas of the West
http://www.energyatlas.org/
Online Atlas profiles wind, solar, geothermal, and biomass power resources in the West using high-resolution maps. An interactive map tool allows you to control your view and printing of the maps.

World Energy Council (WEC)
http://www.worldenergy.org/
Energy stats around the world.