Figure 5
Primary Energy Consumption  
in Residential and Commercial Buildings, 2002
Clothes Dryers
Refrigeration
(4%)
(4%)
Other Electric Uses (5%)
Cooking
Freezers
Water Heating
Ventilation Cooking
  Clothes Washers (0.5%)
(2%)
(2%)
(6%)
(3%)
(2%)
  Dishwashers (0.5%)
  Color Televisions (2.0%)
Office 
  Personal Computers (1.0%)
Equipment
  Furnace Fans (1.0%)
(8%)
Space
Other
Heating
Refrigeration
Uses
(30%)
(7%)
(35%)
Space Cooling
Space Cooling
(11%)
(9%)
Other
Space
Lighting
Lighting
Water
Uses
Heating
(12%)
Uses
Heating
(15%)
(12%)
(21%)
(12%)
Residential Buildings
Commercial Buildings
(Total Quads: 20.9)
(Total Quads: 17.4)
Note: Other energy uses in the residential sector includes
Note: Other energy uses in commercial buildings include
small electric devices, heating elements, and motors;
service station equipment, automated teller machines,
such appliances as swimming pool and hot tub heaters,
telecommunications equipment, medical equipment,
outdoor grills, and outdoor lighting (natural gas); wood
pumps, emergency electric generators, combined heat and
used for primary and secondary heating in wood stoves or
power in commercial buildings, and manufacturing per 
fireplaces; and kerosene and coal.
formed in commercial buildings.
Source: Energy Information Administration. 2004. Annual Energy Outlook 2004. DOE/EIA 0383, p. 139 142, tables A4 and A5. EIA, Washington, DC.
A. Energy Use and Trends in U.S. Buildings 
+
The building sector is the largest consumer of energy in the United
States.
The nation's 106 million households, 4.6 million commercial buildings, and 15.5 trillion
square feet of industrial building floorspace consumed approximately 40.3 quadrillion Btu (quads) of
energy in 2002, or about 41 percent of the U.S. total; most of this energy is consumed by residential
buildings (20.9 quads), somewhat less by commercial buildings (17.4 quads), and the remainder is
consumed by industrial buildings (2.0 quads).
20
Energy consumption is directly tied to GHG emissions 
every quad of energy consumed in the building sector results in approximately 40 MMTC emissions (and
+
costs almost $8 billion in 2001$).
21
Most of the energy used in buildings is consumed by equipment that transforms fuel or electricity
into end uses such as heat or air conditioning, light, hot water, information management, and entertain 
ment (Figure 5).
9
Towards a Climate Friendly  
Built Environment
+
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