Figure 3
CO
2
Emmissions  
from U.S. Residential and Commercial Buildings,
by Energy Source, 2002 
       C
2%
om
2%
9%
b
1%
u
10%
ased Electricity
Purchased E
s
h
t
l
bustion
e
i
rc
o
c
m
t
u
n
o
r
P
i
C
c
17%
i
56%
23%
t
64%
y
5%
9%
313 MMTC
264 MMTC
Residential Buildings
Commercial Buildings
Carbon in coal
Carbon in petroleum
Carbon in natural gas
Source: Based on U.S. Environmental Protection Agency. 2004. Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990 2002. p. 3 4, 3 7,
3 17, tables 3 3, 3 6, and 3 10. Note: units are in million metric tons of carbon (MMTC).
heaters) accounts for about 23 percent of emissions in residential buildings, while it emits slightly less
+
CO
2
in commercial buildings (17 percent of emissions). Direct combustion of petroleum, mostly from fuel
oil heating in the Northeast and Midwest, is also more significant in the residential sector (9 percent of
residential building emissions) than in the commercial sector (where it represents only 5 percent of
commercial building emissions).
Additional CO
2
emissions from the following sources can be attributed to the building sector and
need to be considered when evaluating GHG reduction opportunities:
  The energy used in industrial buildings (only residential and commercial buildings are included
+
in EIA and EPA statistics on the building sector);
  The energy used to produce building materials such as brick and steel and building products such
as appliances and furniture (this  embodied energy  is included in EIA's industrial sector statistics); 
  The fuel used to transport construction and demolition materials (this is included in EIA's
transportation sector statistics); and
7
Towards a Climate Friendly  
Built Environment
+
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