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Table 7c. U.S. Residential Energy Intensity Using Primary Energy by Census Region and Type of Housing Unit, 1980-2001 (Thousand Btu per Square Foot)

Type of Housing Unit and Census Region         Survey Years           Excel Worksheet (xls)

1980

1981

1982

1984

1987

1990

1993

1977
2001

U.S. Total

101

99

94

98

94

91

92

103
79

Mobile Home

178

162

154

161

162

151

163

162
151

Single-Family Detached

93

93

88

91

87

85

86

99
75

Single-Family Attached

92

82

91

90

84

91

91

102
69

Apartments in Buildings with 2 to 4 Units

136

122

117

114

116

115

118

139
91

Apartments in Buildings with 5 or More Units

138

127

128

133

128

112

106

105
98

Total Northeast

94

91

86

89

89

81

83

97
71

Mobile Home

170

162

188

172

177

151

153

150
141

Single-Family Detached

76

77

71

77

78

72

75

90
66

Single-Family Attached

93

77

90

84

86

77

82

110
66

Apartments in Buildings with 2 to 4 Units

135

125

113

111

111

115

106

135
76

Apartments in Buildings with 5 or More Units

171

153

154

157

142

101

111

112
96

Total Midwest

103

102

94

100

90

89

92

103
77

Mobile Home

202

184

168

182

179

161

174

198
165

Single-Family Detached

96

97

87

92

83

82

84

96
74

Single-Family Attached

106

98

105

87

70

93

86

108
65

Apartments in Buildings with 2 to 4 Units

144

119

119

119

120

118

146

166
101

Apartments in Buildings with 5 or More Units

135

139

134

145

136

112

124

115
91

Total South

112

105

104

105

108

103

105

114
91

Mobile Home

184

158

157

153

169

154

167

156
160

Single-Family Detached

106

101

98

99

102

98

100

112
85

Single-Family Attached

94

91

96

109

99

104

110

101
81

Apartments in Buildings with 2 to 4 Units

136

135

128

125

131

121

123

132
112

Apartments in Buildings with 5 or More Units

143

112

142

140

142

130

114

109
121

Total West

88

95

90

94

85

89

80

91
72

Mobile Home

156

150

126

146

124

132

147

154
128

Single-Family Detached

83

92

88

90

80

82

77

88
67

Single-Family Attached

83

79

82

64

78

105

75

87
63

Apartments in Buildings with 2 to 4 Units

121

102

106

102

101

101

107

98
87

Apartments in Buildings with 5 or More Units

88

100

85

100

95

102

81

88
82


Note: Note: In the 1997 RECS the floor area of the housing unit was not measured. The heated floorspace was estimated using regression analysis. Prior 1997 and 2001 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, and 2001.

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For specific questions about the "Residential Energy Intensity Using Primary  Energy
(Thousand  Btu per Square Foot)," 
please contact:

Stephanie J. Battles
stephanie.battles@eia.doe.gov
Phone: 202-586-7237
Fax:  202-586-0018

Release Date: September 2, 2004 

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