Total U.S. Housing Units.......................................... 111.1 7.1 7.0 8.0 12.1

Indoor Lights Turned On During Summer

Number of Lights Turned On

Between 1 and 4 Hours per Day........................... 91.8 5.5 5.5 6.7 9.5

1.......................................................................... 28.6 1.8 2.0 2.3 2.8

2.......................................................................... 29.5 2.3 1.9 2.0 3.4

3.......................................................................... 14.7 0.7 0.8 0.9 1.4

4.......................................................................... 9.3 0.4 Q 0.8 1.1

5 or More............................................................. 9.7 0.4 0.4 0.8 0.9

Energy-Efficient Bulbs Used............................. 31.1 1.7 1.7 2.1 4.7

1....................................................................... 14.6 0.7 0.7 1.3 1.9

2....................................................................... 9.6 0.7 0.6 0.4 1.8

3....................................................................... 3.2 Q Q Q 0.5

4....................................................................... 2.2 Q Q Q 0.3

5 or More.......................................................... 1.4 QQQQ

Number of Lights Turned On

Between 4 and 12 Hours per Day......................... 73.2 4.3 4.2 5.0 7.1

1.......................................................................... 23.0 1.2 1.8 1.5 2.0

2.......................................................................... 24.9 1.9 1.4 1.8 2.3

3.......................................................................... 12.5 0.8 0.5 0.7 1.2

4.......................................................................... 6.4 Q Q 0.3 0.8

5 or More............................................................. 6.4 0.3 Q 0.6 0.9

Energy-Efficient Bulbs Used............................. 27.9 1.6 1.2 1.9 4.0

1....................................................................... 13.6 0.6 0.5 0.9 2.1

2....................................................................... 8.9 0.7 0.4 0.6 1.1

3....................................................................... 3.0 Q Q Q 0.4

4....................................................................... 1.3 N Q Q Q

5 or More.......................................................... 1.1 QQQQ

Number of Lights Turned On

More than 12 Hours per Day................................. 27.0 2.1 2.0 2.3 2.4

1.......................................................................... 14.8 1.3 1.1 1.3 1.4

2.......................................................................... 7.8 0.6 0.7 0.6 0.5

3.......................................................................... 2.0 QQQQ

4.......................................................................... 1.0 QQQQ

5 or More............................................................. 1.4 QQQQ

Energy-Efficient Bulbs Used............................. 11.0 0.8 0.7 1.0 1.5

1....................................................................... 7.0 0.4 0.4 0.6 1.0

2....................................................................... 2.9 Q Q Q 0.3

3....................................................................... 0.5 N Q Q Q

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

5 or More.......................................................... 0.3 Q N Q N

Table HC15.13 Lighting Usage Indicators by Four Most Populated States, 2005

 Million U.S. Housing Units

Texas California

Housing

Units 

Lighting Usage Indicators (millions)

Four Most Populated States

New York Florida

Energy Information Administration

2005 Residential Consumption Survey: Preliminary Housing Characteristics Tables
Table HC15.13 Lighting Usage Indicators by Four Most Populated States, 2005

 Million U.S. Housing Units

Texas California

Housing

Units 

Lighting Usage Indicators (millions)

Four Most Populated States

New York Florida

Outdoor Lights on All Night..................................... 25.8 0.6 1.7 2.2 2.6

1.............................................................................. 16.8 0.4 1.0 1.4 1.6

2.............................................................................. 5.6 Q Q 0.6 0.6

3 or More................................................................. 3.4 N 0.4 Q 0.5

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

1.......................................................................... 0.6 N Q Q N

2.......................................................................... 0.7 QQQQ

 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