Energy consumption is one measure of environmental impact. Why?
Much of our usage consumes non-renewable resources, pollutes the atmosphere, causes damage to our natural resources during mining or extraction and continues additional impact if refinement or other chemical processes are required. Then, there is transportation - getting the fuel to the consumer.
Are you convinced that energy consumption impacts the earth?
In the United States in 2010, the buildings sector accounted for about 41% of primary energy consumption.
( http://buildingsdatabook.eren.doe.gov/ChapterIntro1.aspx )
Note that in all buildings, including residential, space heating and cooling are the largest energy users.
Residential uses 54% of the buildings sector and 22% of primary energy consumption!
Would it help if we could construct walls economically with R 42 thermal resistance rating and average R 31 when concrete, windows and doors are considered? Would such a building improve the energy consumption statistics? Read more...