Buildings in the U.S. use about 70% of the electricity consumed and about 40% of the total energy used.
Expect to see more insulation, more efficient appliances and lighting, better windows and even insulating gardens on the roof as builders scramble to meet the code.
The bill's supporters say the industry is already moving in this direction and consumers shouldn't notice too much of a difference.
National Association of Home Builders disagrees. They say the standards are too aggressive and will raise housing costs.
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