Total U.S. Housing Units.......................................... 111.1 20.6 25.6 40.7 24.2

Indoor Lights Turned On During Summer

Number of Lights Turned On

Between 1 and 4 Hours per Day........................... 91.8 16.8 21.7 33.8 19.5

1.......................................................................... 28.6 5.0 6.3 11.2 6.1

2.......................................................................... 29.5 6.2 6.5 10.5 6.3

3.......................................................................... 14.7 2.5 4.0 5.0 3.1

4.......................................................................... 9.3 1.5 2.5 3.4 1.9

5 or More............................................................. 9.7 1.6 2.4 3.7 2.0

Energy-Efficient Bulbs Used............................. 31.1 5.2 6.7 10.6 8.6

1....................................................................... 14.6 2.3 3.1 5.6 3.6

2....................................................................... 9.6 1.7 2.0 2.9 3.1

3....................................................................... 3.2 0.6 0.7 0.9 1.0

4....................................................................... 2.2 0.4 0.6 0.7 0.5

5 or More.......................................................... 1.4 0.2 0.4 0.4 0.4

Number of Lights Turned On

Between 4 and 12 Hours per Day......................... 73.2 13.9 17.6 27.2 14.4

1.......................................................................... 23.0 4.4 5.4 9.2 4.0

2.......................................................................... 24.9 5.2 6.1 8.7 5.0

3.......................................................................... 12.5 2.3 2.9 4.7 2.6

4.......................................................................... 6.4 0.9 1.7 2.3 1.4

5 or More............................................................. 6.4 1.1 1.5 2.3 1.4

Energy-Efficient Bulbs Used............................. 27.9 4.7 6.8 9.5 6.9

1....................................................................... 13.6 2.2 3.2 4.8 3.4

2....................................................................... 8.9 1.8 2.3 2.7 2.1

3....................................................................... 3.0 0.4 0.6 1.1 0.8

4....................................................................... 1.3 Q 0.4 0.5 0.3

5 or More.......................................................... 1.1 0.3 Q 0.4 0.3

Number of Lights Turned On

More than 12 Hours per Day................................. 27.0 5.7 5.5 11.7 4.1

1.......................................................................... 14.8 3.1 2.9 6.5 2.3

2.......................................................................... 7.8 1.7 1.7 3.3 1.1

3.......................................................................... 2.0 0.4 0.4 0.9 0.3

4.......................................................................... 1.0 0.2 Q 0.4 Q

5 or More............................................................. 1.4 Q 0.4 0.5 Q

Energy-Efficient Bulbs Used............................. 11.0 2.0 2.3 4.4 2.2

1....................................................................... 7.0 1.2 1.4 2.8 1.6

2....................................................................... 2.9 0.7 0.6 1.1 0.5

3....................................................................... 0.5 QQQQ

4....................................................................... 0.3 N Q Q Q

5 or More.......................................................... 0.3 QQQQ

Lighting Usage Indicators

U.S. Census Region

Northeast Midwest

Table HC10.13 Lighting Usage Indicators by U.S. Census Region, 2005

 Million U.S. Housing Units

South West

Housing

Units 

(millions)

Energy Information Administration

2005 Residential Consumption Survey: Preliminary Housing Characteristics Tables
Lighting Usage Indicators

U.S. Census Region

Northeast Midwest

Table HC10.13 Lighting Usage Indicators by U.S. Census Region, 2005

 Million U.S. Housing Units

South West

Housing

Units 

(millions)

Outdoor Lights on All Night..................................... 25.8 2.7 7.1 10.1 5.7

1.............................................................................. 16.8 1.7 5.0 6.6 3.5

2.............................................................................. 5.6 0.7 1.3 2.3 1.3

3 or More................................................................. 3.4 0.4 0.9 1.2 1.0

Gas Outdoor Lights on All Night.......................... 1.3 Q 0.3 0.6 Q

1.......................................................................... 0.6 QQQQ

2.......................................................................... 0.7 Q Q 0.3 Q

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households

were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Consumption Survey: Preliminary Housing Characteristics Tables