How much money could you and your neighbors save on energy?That depends a lot on the building code, which states (and sometimes cities) can use to set minimum standards for energy efficiency.  The U.S. Department of Energy has a nice chart of which state has adopted which code, but the following chart is useful in understanding what that means from the standpoint of relative energy efficiency and energy savings.  A third of states could sav ...

relative energy efficiency of building codes.001

http://cleantechnica.com/2014/03/25/better-building-codes-save-bundles

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