CHAPTER 6. ENERGY USE CHARACTERIZATION 

TABLE OF CONTENTS 

6.1 PURPOSE OF THE DOCUMENT ................................................................................. 6-1

6.2 OPERATING HOURS .................................................................................................... 6-1

6.3 RESULTS OF THE ENERGY USE CHARACTERIZATION ...................................... 6-8

6.3.1 General Service Fluorescent Lamps .................................................................... 6-8

6.3.2 Incandescent Reflector Lamps........................................................................... 6-13

REFERENCES ..........................................................................................................................6-17

LIST OF TABLES 

Table 6.2.1 Average Operating Hours by Sector and Lamp Type.............................................. 6-3

Table 6.2.2 Representative Operating Hours Used in the IRL National Impact Analysis .........6-5

Table 6.3.1 4-Foot Medium Bipin T8 GSFL 3-Lamp System Power Rating and Annual Energy 

Consumption, Commercial and Industrial Sectors...................................................................... 6-9

Table 6.3.2 4-Foot Medium Bipin T12 GSFL 3-Lamp System Power Rating and Annual Energy 

Consumption, Commercial and Industrial Sectors.................................................................... 6-10

Table 6.3.3 4-Foot Medium Bipin T8 GSFL 2-Lamp System Power Rating and Annual Energy 

Consumption, Residential-Sector Average Operating Hours.................................................... 6-10

Table 6.3.4 4-Foot Medium Bipin T12 GSFL 2-Lamp System Power Rating and Annual Energy 

Consumption, Residential-Sector Average Operating Hours.................................................... 6-10

Table 6.3.5 4-Foot Medium Bipin T8 GSFL 2-Lamp System Power Rating and Annual Energy 

Consumption, Residential-Sector High Operating Hours.......................................................... 6-11

Table 6.3.6 4-Foot Medium Bipin T12 GSFL 2-Lamp System Power Rating and Annual Energy 

Consumption, Residential-Sector High Operating Hours.......................................................... 6-11

Table 6.3.7 4-Foot T5 Miniature Bipin Standard Output GSFL 2-Lamp System Power Rating 

and Annual Energy Consumption, Commercial and Industrial Sectors....................................6-12

Table 6.3.8 4-Foot T5 Miniature Bipin High Output GSFL 2-Lamp System Power Rating and 

Annual Energy Consumption, Commercial and Industrial Sectors........................................... 6-12

Table 6.3.9 8-Foot T12 Single-Pin Slimline GSFL 2-Lamp System Power Rating and Annual 

Energy Consumption, Commercial and Industrial Sectors........................................................ 6-12

Table 6.3.11 8-Foot T12 Recessed Double Contact HO GSFL 2-Lamp System Power Rating and 

Annual Energy Consumption..................................................................................................... 6-13

Table 6.3.12. 8-Foot T8 Recessed Double Contact HO GSFL 2-Lamp System Power Rating and 

Annual Energy Consumption..................................................................................................... 6-13

Table 6.3.13 IRL Power Rating and Annual Energy Consumption, 90WPAR38....................6-15

Table 6.3.14 IRL Power Rating and Annual Energy Consumption, 75WPAR38....................6-15

Table 6.3.15 IRL Power Rating and Annual Energy Consumption, 50WPAR30....................6-16

6-i 
LIST OF FIGURES 

Figure 6.2.1 Residential-Sector IRL Annual Operating Hour Distribution by Building Type...6-3

Figure 6.2.2 Residential-Sector GSFL Annual Operating Hour Distribution by Building Type6-4

Figure 6.2.3 Residential-Sector IRL Annual Operating Hour Distribution by Room Type.......6-5

Figure 6.2.4 Commercial-Sector GSFL Annual Operating Hour Distribution by Building Type6-

6

Figure 6.2.5 Commercial-Sector IRL Annual Operating Hour Distribution by Building Type. 6-7

Figure 6.2.6 Industrial-Sector GSFL Annual Operating Hour Distribution by Building Type..6-8

6-ii 
CHAPTER 6. ENERGY USE CHARACTERIZATION 

6.1 PURPOSE OF THE DOCUMENT 

This chapter presents the methodology the U.S. Department of Energy (DOE) follows to 

estimate the annual energy consumption of the lamp and lamp-and-ballast designs DOE 

considers in the rulemaking analyses. The results of this analysis, which represent typical energy 

consumption in the field, are critical inputs to the life-cycle cost (LCC) and payback period 

(PBP) analyses, described in Chapter 8, and the national impact analysis (NIA), described in 

Chapter 10. DOE needs information on annual energy consumption to determine the potential 

energy and operating cost savings to consumers from the use of more-efficient equipment. 

DOE determines the annual energy consumption of the lamp and lamp-and-ballast 

designs using information on their rated power (i.e., the rate of energy they consume) and the 

way consumers use them (i.e., operating hours per year). The engineering analysis (Chapter 5) 

discusses the power ratings of lamp and lamp-and-ballast designs. The following sections 

discuss the inputs and calculations DOE uses to develop annual operating hours and annual 

energy consumption for the products considered in this analysis. 

6.2 OPERATING HOURS 

 To characterize the country’s average use of lighting for a typical year, DOE develops 

annual operating hours by sector and lamp category (i.e., general service fluorescent lamps 

(GSFL) and incandescent reflector lamps (IRL)). For the LCC, DOE accounts for variability in 

operating hours by developing a distribution of operating hours for the LCC spreadsheet. The 

operating hour distributions capture variation across 13 census divisions and large States, 

building types, and lamps for all sectors.a

 In conjunction with data from the U.S. Lighting Market Characterization: Volume I 

(LMC),1

 DOE uses data from the Energy Information Administration’s (EIA) 2003 Commercial 

Building Energy Survey (2003 CBECS),2

 2001 Residential Energy Consumption Survey (2005 

RECS),3

 and 2002 Manufacturer Energy Consumption Survey (2002 MECS).4 These EIA 

studies provide information on the distribution of U.S. buildings by building type and census 

division. The LMC, which is based on thousands of building audits and surveys, provides 

national-level data on annual operating hours by building type and lamp type for all sectors. 

These operating hours are broken down by application for the commercial and industrial sectors, 

and room type for the residential sector.b

 

a

 Census divisions include New England, Middle Atlantic, East North Central, West North Central, South Atlantic, 

East South Central, West South Central, Mountain, and Pacific. Large States include California, Florida, New York, 

and Texas. Sectors include residential, commercial, and industrial. 

b Residential sector room types include bathroom, bedroom, closet, dining room, family room, garage, hall, kitchen, 

living room, office, outdoor, utility room, and other. Commercial and industrial sector applications include 

6-1 
 DOE associates LMC operating hour data by building type with EIA data by building 

type and census division to derive annual operating hours by census division and large States. 

This allows DOE to correlate the electricity price distribution (Chapter 8) and sales tax 

distribution (Chapter 7) with the operating hour distribution by census division and large State in 

the LCC spreadsheet. The following paragraphs describe the data sources that DOE uses to 

develop annual operating hours by sector. 

For the residential sector, DOE uses RECS building data and LMC residential sector 

operating hour data to develop a distribution of annual operating hours for IRL and GSFL. The 

2005 RECS data indicates the probability that a certain building type resides within a census 

division. The LMC indicates the occurrence of certain room types within a given building type 

and the operating hour characteristics of IRL in these rooms. By using probabilities derived 

from RECS, the LCC model selects a building of a certain type and census division or large 

State. DOE then uses aggregated data from the LMC to associate average annual operating 

hours per building type. DOE chose to aggregate operating hour data to the building level, rather 

than to the room level, because DOE believes this approach more closely represents the impact 

on an individual consumer. However, DOE does use operating hour data at the room level to 

perform LCC sensitivity results (Appendix 8B). 

DOE uses a similar approach to develop a distribution of annual operating hours in the 

commercial sector for GSFL and IRL. However, instead of room type, DOE aggregates LMC 

annual operating hour data by application to develop average annual operating hours by building 

type. The 2003 CBECS data indicates the probability a certain building type in a certain census 

division exists. Once the LCC model selects a building, DOE associates the aggregated LMC 

annual operating hour average with the building type selected. Like the residential sector, DOE 

chose to aggregate LMC operating hour data to the building level for the commercial and 

industrial sectors because DOE believes it more closely represents the impact on consumers. 

To develop a distribution of annual operating hours in the industrial sector, DOE uses an 

approach consistent with that used for the commercial sector. The 2002 MECS data indicates the 

probability a certain building type exists. DOE aggregates LMC annual operating hour data by 

industrial application to develop average annual operating hours by building type. Once the 

model selects a building, DOE associates the aggregated LMC operating hour average with the 

building type selected. Because MECS does not provide the location of industrial sector 

buildings, DOE uses population information from the U.S. Census Bureau’s 2008 population 

estimate to establish the probability that a certain industrial building exists in a certain census 

division or large State.5

 Table 6.2.1 summarizes the weighted-average operating hours per lamp 

type per sector. 

 

assembly, athletic, bathroom, boarding, class, dining, display, exit, ext-archi, ext-park, exit-sign, exterior, food 

preparation, hall, healthcare, office, ship/rec, shop, storage, task, unknown, and utility. 

6-2 
Table 6.2.1 Average Operating Hours by Sector and Lamp Type 

Sector Lamp Type Average Annual Operating Hours 

hrs/year 

GSFL 791 Residential 

IRL 889 

GSFL 3,435 Commercial 

IRL 3,450 

Industrial GSFL 4,795 

Figure 6.2.1 and Figure 6.2.2 display the variety of annual operating hours DOE uses for 

IRL and GSFL, respectively, in the residential sector. DOE uses these annual operating hours in 

the LCC calculation. 

1

2

3 4 5

0%

10%

20%

30%

40%

50%

60%

70%

863 929 891 798 765

Residential‐Sector IRL Probability

Annual Operating Hours by Building Type (hrs/year)

1: Mobile home

2: Single‐family detached

3: Single‐family attached

4: Multifamily 2‐4 units

5: Multifamily > 4 units

Figure 6.2.1 Residential-Sector IRL Annual Operating Hour Distribution by Building 

Type 

6-3 
1

2

3 4 5

0%

10%

20%

30%

40%

50%

60%

70%

686 806 739 806 790

Residential‐Sector GSFL Probability

Annual Operating Hours by Building Type (hrs/year)

1: Mobile home

2: Single‐family detached

3: Single‐family attached

4: Multifamily 2‐4 units

5: Multifamily > 4 units

Figure 6.2.2 Residential-Sector GSFL Annual Operating Hour Distribution by Building 

Type 

 To estimate five of the most likely annual operating hour characteristics of IRL in the 

residential sector in the NIA, DOE uses information from a residential IRL annual operating 

hour distribution by room type developed with data from LMC and RECS (Figure 6.2.3). DOE 

uses the mean (889 hrs/year) and standard deviation (228 hrs/year) of this distribution to develop 

a normal distribution. From this normal distribution, DOE selects five different annual operating 

hours to represent the annual operating hours of approximately 20 percent of residential IRL 

sockets. Table 6.2.2 lists the five annual operating hours DOE uses in the NIA. For more 

information on the use of these operating hours please refer to Chapter 9 of the TSD. 

6-4 
0%

5%

10%

15%

20%

25%

30%

100 300 500 700 900 1100

Residential Sector IRL Probability

Annual Operating Hours (hrs/year)

Figure 6.2.3 Residential-Sector IRL Annual Operating Hour Distribution by Room Type 

Table 6.2.2 Representative Operating Hours Used in the IRL National Impact Analysis 

Percentage of IRL Sockets 

%

IRL Annual Operating Hours

hrs/year

20 597 

20 770 

20 889 

20 1,009 

20 1,182 

Figure 6.2.4 and Figure 6.2.5 display the annual operating hour distributions for GSFL 

and IRL, respectively, operating in the commercial sector. DOE uses this distribution of annual 

operating hours in the LCC calculation. 

6-5 
1

2

4

5

6

7

8

11

12

13

14

15

16 17

18

23 24

25

26

91

0%

2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

Commercial‐Sector GSFL Probability

Annual Operating Hours by Building Type (hrs/year)

1: Vacant

2: Office

4: Laboratory

5: Nonrefrigerated warehouse

6: Food sales

7: Public order and safety

8: Outpatienthealthcare

11: Refrigeratedwarehouse

12: Religious worship

13: Public assembly

14: Education

15: Food service

16: Inpatient health care

17: Nursing

18: Lodging

25: Retail other thanmall

26: Service

91: Other

Figure 6.2.4 Commercial-Sector GSFL Annual Operating Hour Distribution by Building 

Type 

6-6 
1

2

4

5

6

7

8

11

12

13

14

15

16 17

18

23 24

25

26

91

0%

2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

Commercial‐Sector IRL Probability

Annual Operating Hours by Building Type (hrs/year)

1: Vacant

2: Office

4: Laboratory

5: Nonrefrigerated warehouse

6: Food sales

7: Public order and safety

8: Outpatienthealthcare

11: Refrigeratedwarehouse

12: Religious worship

13: Public assembly

14: Education

15: Food service

16: Inpatient health care

17: Nursing

18: Lodging

25: Retail other thanmall

26: Service

91: Other

Figure 6.2.5 Commercial-Sector IRL Annual Operating Hour Distribution by Building 

Type 

Figure 6.2.6 displays the annual operating hour distribution for GSFL operating in the 

industrial sector. DOE uses this distribution of annual operating hours in the LCC calculation. 

6-7 
20

21

22 23

24 25

26

27

28

29

30

31

32

33

34

35

36 37

38

39

0%

2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

Industrial‐Sector GSFL Probability

Annual Operating Hours by Building Type (hrs/year)

20: Food and Kindred Products

21: Tobacco Products

22: TextileMill Products

23: Apparel and OtherTextile

Products

24: Lumberand Wood

Products

25: Furniture andFixtures

26: Paper and Allied Products

27: Printing and Publishing

28: Chemicals and Allied

Products

29: Petroleum andCoal

Products

30: Rubber andMiscellaneous

Plastics Products

31: Leather and Leather

Products

32: Stone, Clay, and Glass

Products

33: Primary Metal Industries

34: Fabricated Metal

Products

35: Industrial Machinery

and Equipment

36: Electronic and Other

Electric Equipment

37: Transportation

Equipment

38: Instruments and

Related Products

39: Miscellaneous

Manufacturing Industries

Figure 6.2.6 Industrial-Sector GSFL Annual Operating Hour Distribution by Building 

Type 

6.3 RESULTS OF THE ENERGY USE CHARACTERIZATION 

 This section presents the annual energy use estimates for GSFL and IRL. DOE calculates 

the annual energy consumption using annual operating hours and power rating estimates. The 

annual energy consumption results use average annual operating hours. DOE uses the annual 

energy consumption results in the LCC and PBP analyses and the NIA to calculate the operating 

cost of systems and estimate the potential energy savings of efficacy levels (ELs). 

6.3.1 General Service Fluorescent Lamps 

Using annual operating hours and system power ratings, DOE calculates the annual 

energy consumption of the entire lamp-and-ballast system. The following paragraphs detail (1) 

the power ratings for all the GSFL systems DOE assesses in the LCC and PBP analysis for each 

product class representing GSFL; and (2) average annual energy consumption per lamp-andballast system using the U.S. weighted average of annual operating hours in each sector. The 

6-8 
average GSFL annual operating hours for the U.S. residential, commercial, and industrial sectors 

are 791 hours, 3,435 hours, and 4,795 hours, respectively. For the residential lamp failure event, 

however, DOE conducts an analysis at high residential operating hours of 1,210 hours per year. 

This is because a measure life report has shown that ballasts in the residential sector last 

approximately 15 years.6 The usage of 1,210 operating hours leads to a baseline lamp lifetime of 

approximately 12.4 years, which allows the lamp failure event to occur. The usage of 791 hours 

would result in a ballast reaching the end of its life before a lamp failure. Appendix 6A presents 

the energy consumption rates for the systems DOE uses in the NIA. As discussed in the 

engineering analysis (Chapter 5), DOE pairs lamps with ballasts of different ballast factors to 

adjust light output, creating a number of system designs. 

Table 6.3.1 4-Foot Medium Bipin T8 GSFL 3-Lamp System Power Rating and Annual 

Energy Consumption, Commercial and Industrial Sectors 

Annual Energy Consumption System Power Rating Technology Option Commercial Industrial 

W kWh kWh 

1.18BF32 Elec* 113.3 389.3 543.4 

1.18BF25 Elec 87.7 301.4 420.7 

1.0BF32 Elec 97.4 334.6 467.0 

1.0BF30 Elec 90.3 310.2 433.0 

1.0BF28 Elec 84.6 290.7 405.8 

0.88BF32 Elec 86.8 298.1 416.1 

0.88BF30 Elec 80.4 276.2 385.5 

0.88BF28 Elec 75.3 258.7 361.1 

0.88BF25 Elec 66.5 228.4 318.9 

0.78BF32 Elec 77.9 267.7 373.7 

0.78BF30 Elec 72.2 247.8 346.0 

0.78BF28 Elec 67.5 232.0 323.8 

0.75BF32 Elec 75.3 258.6 361.0 

0.71BF32 Elec 71.7 246.4 344.0 

W = watts 

kWh = kilowatt hours 

*“1.18BF32Elec” indicates a lamp-ballast system consisting of a 32W lamp paired with an electronic 

ballast of a 1.18 ballast factor. 

6-9 
Table 6.3.2 4-Foot Medium Bipin T12 GSFL 3-Lamp System Power Rating and Annual 

Energy Consumption, Commercial and Industrial Sectors 

Annual Energy Consumption System Power Rating Commercial Industrial Technology 

Option 

W kWh kWh 

0.95BF40 Mag* 129.0 443.1 618.6 

0.88BF40 Elec 107.7 369.8 516.2 

0.88BF34 Elec 91.7 314.8 439.5 

0.87BF40 Elec 107.0 367.5 512.9 

0.86BF34 Elec 90.3 310.2 433.0 

*“0.95BF40 Mag” indicates a lamp-ballast system of a 40W lamp paired with a magnetic ballast of a 

0.95 ballast factor. 

Table 6.3.3 4-Foot Medium Bipin T8 GSFL 2-Lamp System Power Rating and Annual 

Energy Consumption, Residential-Sector Average Operating Hours 

Annual Energy Consumption System Power Rating Technology Option Residential 

W kWh 

0.88BF32 Elec 58.6 46.4 

0.88BF25 Elec 45.4 35.9 

0.78BF32 Elec 51.6 40.8 

0.78BF30 Elec 48.9 38.7 

0.78BF28 Elec 45.6 36.1 

0.78BF25 Elec 40.5 32.0 

0.75BF32 Elec 49.6 39.2 

0.75BF30 Elec 47.2 37.3 

0.71BF32 Elec 46.8 37.0 

Table 6.3.4 4-Foot Medium Bipin T12 GSFL 2-Lamp System Power Rating and Annual 

Energy Consumption, Residential-Sector Average Operating Hours 

Annual Energy Consumption System Power Rating Technology Option Residential 

W kWh 

0.85BF34 Elec 62.0 49.0 

0.75BF34 Elec 48.0 38.0 

0.68BF40 Mag 70.0 55.4 

0.66BF34 Mag 60.0 47.5 

0.65BF40 Elec 58.0 45.9 

6-10 
Table 6.3.5 4-Foot Medium Bipin T8 GSFL 2-Lamp System Power Rating and Annual 

Energy Consumption, Residential-Sector High Operating Hours 

Annual Energy Consumption System Power Rating Technology Option Residential 

W kWh 

0.88BF32 Elec 58.6 70.9 

0.88BF25 Elec 45.4 54.9 

0.78BF32 Elec 51.6 62.4 

0.78BF30 Elec 48.9 59.2 

0.78BF28 Elec 45.6 55.2 

0.78BF25 Elec 40.5 49.0 

0.75BF32 Elec 49.6 60.0 

0.75BF30 Elec 47.2 57.1 

0.71BF32 Elec 46.8 56.6 

Table 6.3.6 4-Foot Medium Bipin T12 GSFL 2-Lamp System Power Rating and Annual 

Energy Consumption, Residential-Sector High Operating Hours 

Annual Energy Consumption System Power Rating Technology Option Residential 

W kWh 

0.85BF34 Elec 62.0 75.0 

0.75BF34 Elec 48.0 58.1 

0.68BF40 Mag 70.0 84.7 

0.66BF34 Mag 60.0 72.6 

0.65BF40 Elec 58.0 70.2 

6-11 
Table 6.3.7 4-Foot T5 Miniature Bipin Standard Output GSFL 2-Lamp System Power 

Rating and Annual Energy Consumption, Commercial and Industrial Sectors 

Annual Energy Consumption System Power Rating Commercial Industrial Technology 

Option 

W kWh kWh 

1.15BF28 Elec 70.7 242.8 339.0 

1.15BF26 Elec 67.5 231.7 323.5 

0.95BF28 Elec 61.2 210.3 293.6 

0.9BF28 Elec 58.9 202.2 282.3 

0.9BF26 Elec 54.4 186.7 260.7 

Table 6.3.8 4-Foot T5 Miniature Bipin High Output GSFL 2-Lamp System Power Rating 

and Annual Energy Consumption, Commercial and Industrial Sectors 

Annual Energy Consumption System Power Rating Commercial Industrial Technology 

Option 

W kWh kWh 

1.0BF54 Elec 120.0 412.2 575.4 

1.0BF51 Elec 117.0 401.9 561.0 

Table 6.3.9 8-Foot T12 Single-Pin Slimline GSFL 2-Lamp System Power Rating and 

Annual Energy Consumption, Commercial and Industrial Sectors 

Annual Energy Consumption System Power Rating Commercial Industrial Technology 

Option 

W kWh kWh 

0.94BF75 Mag 158.0 542.7 757.6 

0.88BF60 Mag 126.0 432.8 604.2 

0.88BF75 Elec 135.0 463.7 647.3 

0.88BF60 Elec 110.0 377.9 527.5 

0.85BF75 Elec 132.0 453.4 633.0 

0.85BF60 Elec 107.0 367.5 513.1 

6-12 
Table 6.3.10 8-Foot T8 Single-Pin Slimline GSFL 2-Lamp System Power Rating and 

Annual Energy Consumption 

Annual Energy Consumption System Power Rating Commercial Industrial Technology 

Option 

W kWh kWh 

1.18BF59 Elec 149.9 515.0 718.9 

0.88BF55 Elec 102.0 350.4 489.2 

0.88BF57 Elec 107.5 369.3 515.5 

0.88BF59 Elec 112.8 387.5 541.0 

0.85BF57 Elec 106.0 364.1 508.3 

0.85BF59 Elec 109.1 374.8 523.2 

0.78BF57 Elec 102.5 352.1 491.5 

0.78BF59 Elec 100.4 345.0 481.6 

Table 6.3.11 8-Foot T12 Recessed Double Contact HO GSFL 2-Lamp System Power 

Rating and Annual Energy Consumption 

Annual Energy Consumption System Power Rating Commercial Industrial Technology 

Option 

W kWh kWh 

0.95BF110 Mag 237.0 814.1 1136.4 

0.91BF95 Mag 203.0 697.3 973.4 

0.9BF110 Elec 211.5 726.6 1014.3 

0.9BF95 Elec 185.6 637.7 890.2 

0.89BF95 Elec 181.3 622.8 869.4 

0.88BF110 Elec 205.4 705.4 984.8 

0.88BF95 Elec 177.0 607.9 848.6 

Table 6.3.12. 8-Foot T8 Recessed Double Contact HO GSFL 2-Lamp System Power Rating 

and Annual Energy Consumption 

Annual Energy Consumption System Power Rating Commercial Industrial Technology 

Option 

W kWh kWh 

0.88BF86 Elec 160.0 549.6 767.2 

0.81BF86 Elec 151.0 518.7 724.1 

6.3.2 Incandescent Reflector Lamps 

Because an IRL does not require a ballast to operate, the rate of energy usage is simply 

the rated power of the lamp. Table 6.3.13 to Table 6.3.15 detail power ratings for all of the IRL 

6-13 
designs. DOE calculates the annual energy consumption based on the U.S. weighted average 

annual operating hours for IRL in the residential and commercial sectors as 889 hours and 3,450 

hours, respectively. Appendix 6A lists the annual energy consumption of those IRL designs used 

in the NIA. 

6-14 
Table 6.3.13 IRL Power Rating and Annual Energy Consumption, 90WPAR38 

Annual Energy Consumption 

Lamp 

Efficacy 

Lamp 

Power 

Rating Commercial Residential Technology 

Option

lm/W W kWh kWh 

Baseline 14.6 90.0 310.5 79.6 

EL1 15.3 85.7 295.7 75.8 

EL2 15.9 82.5 284.6 72.9 

EL2 16.6 79.0 272.6 69.9 

EL3 18.0 70.0 241.5 61.9 

EL4 (Normal- and 

Baseline-Life) 19.8 66.0 227.7 58.4 

EL5 (Normal- and 

Baseline-Life) 21.0 60.0 207.0 53.1 

Table 6.3.14 IRL Power Rating and Annual Energy Consumption, 75WPAR38 

Annual Energy Consumption 

Lamp 

Efficacy 

Lamp 

Power 

Rating Commercial Residential Technology 

Option

lm/W W kWh kWh 

Baseline 14.0 75.0 258.8 66.3 

EL1 14.6 71.7 247.4 63.4 

EL2 15.3 68.8 237.4 60.8 

EL2 15.9 66.0 227.7 58.4 

EL3 17.5 60.0 207.0 53.1 

EL4 (Normal- and 

Baseline-Life) 19.1 55.0 189.8 48.6 

EL5 (Normal- and 

Baseline-Life) 20.3 51.7 178.4 45.7 

6-15 
Table 6.3.15 IRL Power Rating and Annual Energy Consumption, 50WPAR30 

Annual Energy Consumption 

Lamp 

Efficacy 

Lamp 

Power 

Rating Commercial Residential Technology 

Option 

lm/W W kWh kWh 

Baseline 12.6 50.0 172.5 44.2 

EL1 13.2 47.8 164.9 42.3 

EL2 13.5 46.0 158.7 40.7 

EL2 14.0 45.0 155.3 39.8 

EL3 15.1 41.8 144.2 37.0 

EL4 (Normal- and 

Baseline-Life) 17.0 40.0 138.0 35.4 

EL5 (Normal- and 

Baseline-Life) 19.1 40.0 138.0 35.4 

6-16 
6-17 

 

REFERENCES

1

 U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy. Energy 

Conservation Program for Consumer Products: Final Report: U.S. Lighting Market 

Characterization, Volume I: National Lighting Inventory and Energy Consumption Estimate. 

2002. Washington, D.C. 

< www.eere.energy.gov/buildings/info/documents/pdfs/lmc_vol1_final.pdf> 

2

 U.S. Department of Energy, Energy Information Administration. Commercial Building Energy 

Consumption Survey: Micro-level data, file 2 Building Activities, Special Measures of Size, and 

Multi-building Facilities. 2003. Washington, D.C. 

<http://www.eia.doe.gov/emeu/cbecs/public_use.html> 

3

 U.S. Department of Energy, Energy Information Administration. RECS Public Use Microdata 

files, calendar year 2005. 2009. Washington, D.C. 

<http://www.eia.doe.gov/emeu/recs/recspubuse05/pubuse05.html> 

4

 U.S. Department of Energy, Energy Information Administration. Manufacturing Energy 

Consumption Survey, Table 1.4: Number of Establishments by First Use of Energy for All 

Purposes (Fuel and Nonfuel). 2002. Washington, D.C. 

<http://www.eia.doe.gov/emeu/mecs/mecs2002/data02/shelltables.html> 

5

 U.S. Census Bureau. Population change: April 1, 2000 to July 1, 2008 (NST-EST2008-

popchg2000-2008). July 2008. Washington, D.C. 

<http://www.census.gov/popest/states/files/NST-EST2008-popchg2000-2008.csv> 

6

 Economic Research Associates, Inc., and Quantec, LLC. Revised/Updated EULs Based On 

Retention And Persistence Studies Results. Southern California Edison, 2005.