Million U.S. Housing Units

Total U.S. Housing Units........................................ 111.1 33.0 8.0 3.4 5.9 14.4 1.2

Indoor Lights Turned On During Summer

Number of Lights Turned On

Between 1 and 4 Hours per Day......................... 91.8 26.8 6.7 2.8 4.8 11.7 0.9

1........................................................................ 28.6 10.7 1.9 1.2 2.0 5.2 0.4

2........................................................................ 29.5 9.0 2.4 0.7 1.8 3.7 0.3

3........................................................................ 14.7 3.6 1.1 0.4 0.5 1.5 Q

4........................................................................ 9.3 2.0 0.7 0.3 Q 0.7 Q

5 or More........................................................... 9.7 1.5 0.5 Q 0.3 0.5 N

Energy-Efficient Bulbs Used........................... 31.1 8.2 2.1 0.7 1.6 3.6 Q

1.................................................................... 14.6 4.5 1.1 0.3 0.8 2.1 Q

2.................................................................... 9.6 2.3 0.5 0.2 0.5 0.9 Q

3.................................................................... 3.2 0.7 0.3 QQQQ

4.................................................................... 2.2 0.4 QQQQN

5 or More....................................................... 1.4 0.4 Q N Q Q N

Number of Lights Turned On

Between 4 and 12 Hours per Day....................... 73.2 20.9 5.5 2.1 3.5 9.2 0.6

1........................................................................ 23.0 8.0 1.8 0.9 1.2 3.8 0.3

2........................................................................ 24.9 7.7 1.9 0.5 1.3 3.7 0.2

3........................................................................ 12.5 2.8 0.9 0.4 0.4 1.1 Q

4........................................................................ 6.4 1.6 0.5 Q 0.4 0.5 Q

5 or More........................................................... 6.4 0.8 0.3 QQQQ

Energy-Efficient Bulbs Used........................... 27.9 7.3 2.0 0.7 1.2 3.1 Q

1.................................................................... 13.6 4.2 1.2 0.3 0.7 1.9 Q

2.................................................................... 8.9 2.1 0.5 Q 0.4 0.9 Q

3.................................................................... 3.0 0.7 0.3 Q Q Q N

4.................................................................... 1.3 QQQQQN

5 or More....................................................... 1.1 Q N N Q Q N

Number of Lights Turned On

More than 12 Hours per Day............................... 27.0 8.4 2.0 0.9 1.3 4.1 Q

1........................................................................ 14.8 5.4 1.1 0.6 0.8 2.8 Q

2........................................................................ 7.8 2.2 0.5 0.3 0.4 1.0 N

3........................................................................ 2.0 0.4 QQQQN

4........................................................................ 1.0 Q Q Q N Q N

5 or More........................................................... 1.4 0.3 Q N Q Q N

Energy-Efficient Bulbs Used........................... 11.0 2.6 0.7 Q 0.4 1.3 Q

1.................................................................... 7.0 1.9 0.5 Q 0.2 0.9 Q

2.................................................................... 2.9 0.6 Q Q Q 0.3 N

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

4.................................................................... 0.3 NNNNNN

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

Attached 2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Table HC4.13 Lighting Usage Indicators by Renter-Occupied Housing Unit Zone, 2005

 RenterOccupied 

Housing 

Units 

(millions)

Type of Renter-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Lighting Usage Indicators Detached

Energy Information Administration

2005 Residential Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

Attached 2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Table HC4.13 Lighting Usage Indicators by Renter-Occupied Housing Unit Zone, 2005

 RenterOccupied 

Housing 

Units 

(millions)

Type of Renter-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Lighting Usage Indicators Detached

Outdoor Lights on All Night................................... 25.8 3.4 2.5 0.8 Q N N

1............................................................................ 16.8 2.6 1.9 0.7 N N N

2............................................................................ 5.6 0.6 0.5 Q Q N N

3 or More.............................................................. 3.4 Q Q Q N N N

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

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

2........................................................................ 0.7 Q Q NNNN

 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