He estimates that about 10 percent of the 1,200 units are in newly constructed buildings. (articles.chicagotribune.com)
This is both a matter of more efficient electric appliances and cars, and a matter of constructing buildings in such a way that far less energy is needed for heating and cooling. (religion-online.org)
So this is what we call the embodied energy component, or the greenhouse gas emissions component, of constructing a building. (treehugger.com)