Home > Households, Buildings & Industry > Energy Efficiency Page > Energy Intensities >Table 6c

U.S. Residential Housing Weather-Adjusted Site Energy
Intensity

Page Last Revised: July 2009


Table 6c. U.S. Residential Energy Intensity Using Weather-Adjusted Site Energy1 by Census Region and Type of Housing Unit, 1980-2005
(Thousand Btu per Square Foot)

Type of Housing Unit and Census Region 

1980

1981

1982

1984

1987

1990

1993

19972

2001
2005

U.S. Total

63

64

58

63

60

58

53

59

46
41

Mobile Home

97

91

81

87

91

88

81

79

73
67

Single-Family Detached

56

60

53

57

55

54

50

57

44
37

Single-Family Attached

62

55

61

59

53

56

52

63

44
43

Apartments in Buildings with 2 to 4 Units

99

87

82

84

84

86

80

91

58
78

Apartments in Buildings with 5 or More Units

86

80

82

88

82

65

58

56

50
62

Total Northeast

67

66

62

66

65

63

58

68

50
50

Mobile Home

103

100

125

114

120

99

91

91

89
86

Single-Family Detached

52

54

49

55

55

55

51

61

46
42

Single-Family Attached

67

57

66

65

64

60

57

79

50
47

Apartments in Buildings with 2 to 4 Units

107

100

88

91

89

100

81

103

58
94

Apartments in Buildings with 5 or More Units

126

112

120

123

107

76

76

79

61
93

Total Midwest

70

76

64

71

66

64

60

69

51
45

Mobile Home

132

135

95

108

116

108

104

124

103
88

Single-Family Detached

65

72

59

65

60

59

54

64

49
42

Single-Family Attached

67

73

56

61

49

64

59

77

45
42

Apartments in Buildings with 2 to 4 Units

111

92

91

95

102

98

111

119

74
77

Apartments in Buildings with 5 or More Units

86

95

92

112

107

73

74

71

51
69

Total South

58

55

57

57

55

54

50

53

43
35

Mobile Home

106

75

74

70

77

75

68

65

63
62

Single-Family Detached

50

54

54

55

53

53

49

54

42
31

Single-Family Attached

38

48

61

52

40

45

49

45

39
44

Apartments in Buildings with 2 to 4 Units

74

68

75

74

67

62

52

60

47
65

Apartments in Buildings with 5 or More Units

42

52

76

71

68

57

48

44

48
50

Total West

53

57

51

56

51

52

44

50

40
40

Mobile Home

93

82

70

85

76

78

77

76

66
64

Single-Family Detached

50

56

50

55

48

48

43

49

38
38

Single-Family Attached

50

46

51

47

51

57

40

49

39
38

Apartments in Buildings with 2 to 4 Units

76

61

64

61

61

62

59

57

48
61

Apartments in Buildings with 5 or More Units

49

55

44

56

57

57

40

42

40
44

1.The Btu value of energy at the point it enters the home, building, or establishment, sometimes referred to as "delivered" energy.
2. In the 1997 RECS the floor area of the housing unit was not measured. The heated floorspace was estimated using regression analysis. Except for 1997, estimates include all the floor area of the housing unit that was enclosed from the weather.
Sources: Energy Information Administration, Residential Energy Consumption Surveys 1980, 1981, 1982, 1984, 1987, 1990, 1993, 1997, 2001, and 2005.

 

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