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THE CYCLE – REDUCE
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End-use purposes
Heating Water heating
Cooling
Lighting
Others
Energy consumption by usage in a building
in percentage of total energy consumption
Source: UNEP, Buildings and Climate Change, Status, Challenges and Opportunities, 2007 (primary sources: Al-Sayed
Omar Assem and Al-Ragom, 2005; CMIE, 2001; Sustainable Energy Authority Victoria, 2004; U.S. Department of
Energy, 2006, Office of Energy Efficiency; Natural Resources Canada, 2006).
0
20
40
60
80
100%
10
30
50
70
90
0
20
40
60
80
100%
10
30
50
70
90
India
Kuwait
Canada
Australia
Canada
India
United States
Australia
United States
Urban, China
Rural, China
Residential
Commercial
Buildings (residential and commercial) account for 10 to 15% of all greenhouse gas
emissions, including almost 70% carbon dioxide and 25% methane.