Figure 2
Declining Energy Consumption  
per Household
130
50
126
Per Household
120
45
45.3
110
40
Per Capita
38.4
38.5
100
101
101
35.7
35
Million Btu per Capita
92
Million Btu per Household
90
80
30
1978 1980
1990 1993
1997
2001
Year
Sources: 
1. Rawlings, Steve W. and Arlene F. Saluter. 1995. Household and Family Characteristics: March 1994, p. A 1,
table A 1.U.S. Government Printing Office, Washington, DC.
2. U.S. Census Bureau. 2002. Statistical Abstract of the United States: 2001, No. 54 , p. 49. U.S. Census
Bureau, Washington, DC.
3. U.S. Census Bureau. 2004. Statistical Abstract of the United States: 2003, No. 66, p. 61. U.S. Census
Bureau, Washington, DC.
4. Energy Information Administration. 2003. Annual Energy Review 2002, p. 53, table 2.5. EIA, Washington, DC.
5. Energy Information Administration. 2004. 2001 Residential Energy Consumption Survey: Household Energy
Consumption and Expenditures Tables, table CE1 1c, EIA, Washington, DC.
+
consumption provides system wide savings throughout the energy supply chain; for instance, lowering
household electricity consumption reduces the amount of fossil fuel consumed at power plants as well as
the transmission and distribution losses associated with delivering the electricity to the consumer. This
energy supply chain savings is particularly relevant in the building sector, which accounts for 70 percent
of U.S. electricity consumption (excluding industrial buildings).
The United States has made remarkable progress in reducing the energy use and carbon intensity
+
of its building stock and operations. These improvements are largely the result of advances in the energy
efficiency of U.S. buildings that followed the 1973 1974 OPEC oil embargo. Since 1972, building
energy use overall has increased at less than half the rate of growth of the nation's gross domestic
product (GDP). And since the late 1970s, when detailed energy use data first became available,
2
+
Towards a Climate Friendly  
Built Environment
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