### 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 H ours by Sector and Lam p 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 Miniatur e Bipin Standard Output GSFL 2-Lamp System Power Rating and Annual Energy Consumption, Comm ercial and Industrial Sectors ....................................6-12 Table 6.3.8 4-Foot T5 Miniatur e Bipin High Output GSFL 2-Lamp System Power Rating and Annual Energy Consumption, Commer cial and Industrial Sectors ........................................... 6-12 Table 6.3.9 8-Foot T12 Single-Pin Slimline G SFL 2-Lamp System Power Rating and Annual Energy Consumption, Commerci al and Industrial Sectors........................................................ 6-12 Table 6.3.11 8-Foot T12 Recessed Double Contac t HO GSFL 2-Lamp System Power Rating and Annual Energy Consumption ..................................................................................................... 6-13 Table 6.3.12. 8-Foot T8 Recessed Double Contac t 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 Type 6-4 Figure 6.2.3 Residential-Sector IRL Annual Operating Hour Distribution by Room Type .......6-5 Figure 6.2.4 Commercial-Sector GSFL Annual Op erating Hour Distribution by Building Type 6- 6 Figure 6.2.5 Commercial-Sector IRL Annual Op erating Hour Distri bution by Building Type . 6-7 Figure 6.2.6 Industrial-Sector GSFL Annual Op erating Hour Distri bution by Building Type ..6-8

6-ii

### CHAPTER 6. ENERGY USE CHARACTERIZATION

6.1 PURPOSE OF THE DOCUMENT
This chapter presents the m ethodology the U. S. Department of Energy (DOE) follows to estimate the annual energy consumption of th e 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-cycl e 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 en ergy consumption to determine the potential energy and operating cost savings to consumers from the use of more-efficient equipment.
DOE determines the annual energy consum ption 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 y ear). 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 c onsidered 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., gene ral service fluorescent lamps (GSFL) and incandescent reflector lamps (IRL)). For the LCC, DOE accounts for variability in operating hours by developing a di stribution of operating hours for the LCC spreadsheet. The operating hour distributions cap ture 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 Inform ation Administration’s (EIA) 2003 Commercial Building Energy Survey (2003 CBECS), 2 

### 2001 Residential Energy C onsumption 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 opera ting hours by building type and lamp type for all sectors. These operating hours are broken down by application for the commerci al 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 de rive annual operating hours by censu s division and large States. This allows DOE to correlate the electricity price distribution (Chapt er 8) and sales tax distribution (Chapter 7) with the operating hour distribution by cen sus 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 devel op a distribution of annual operating hours for IRL and GSFL. The 2005 RECS data indicates the proba bility that a certain building type resides within a census division. The LMC indicates the occurrence of cer tain room types within a given building type and the operating hour characterist ics of IRL in these rooms. By using probabilities derived from RECS, the LCC model select s 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 app lication to develop average annual operating hours by building type. The 2003 CBECS data indicates the probabili ty 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. Li ke 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 distributio n of annual operating hours in the industrial sector, DOE uses an approach consistent with that used for the comm ercial sector. The 2002 ME CS 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 a ggregated LMC operating h our 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-avera ge operating hours per lam p type per sector.

assembly, athletic, bathroom, boarding, class, dining, disp lay, exit, ext-archi, ext-pa rk, exit-sign, exterior, food preparation, hall, healthcare, office, ship/rec, shop, storag e, task, unknown, and utility.

6-2

### Table 6.2.1 Average Operating Hours by Sector and Lamp Type Average Annual Operating Hours Sector Lamp Type 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 se ctor. 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 765Residential‐SectorIRLProbability



## 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 790Residential‐SectorGSFLProbability



## 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 characteri stics of IRL in the residential sector in the NIA, DOE uses information from a residential IRL annual operating hour distribution by room type develope d with data from LMC and RECS ( Figure 6.2.3 ). DOE uses the m ean (889 hrs/year) and standard deviation (228 hrs/year) of this distribution to develop a normal distribution. From this normal distribut ion, DOE selects five different annual operating hours to represent the annual ope rating 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 inform ation on the use of these operating hour s please refer to Chapter 9 of the TSD.

6-4

### 0% 5% 10% 15% 20% 25% 30%

100 300 500 700 900 1100ResidentialSectorIRLProbability



### Annual Operating Hours (hrs/year)

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

Table 6.2.2 Representative Operating Hours Us ed 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 comm ercial sector. DOE uses this distribution of annual operating hours in the LCC calculation.

6-51 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‐SectorGSFLProbability

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: Outpatient health care 11: Refrigerated warehouse 12: Religious worship 13: Public assembly 14: Education 15: Food service 16: Inpatient health care 17: Nursing 18: Lodging 25: Retail other than mall 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‐SectorIRLProbability



### 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: Outpatient health care 11: Refrigerated warehouse 12: Religious worship 13: Public assembly 14: Education 15: Food service 16: Inpatient health care 17: Nursing 18: Lodging 25: Retail other than mall 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 di stribution for GSFL operating in the industrial sector. DOE uses this distribution of annual operating hours in the LCC calculation.

6-720

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‐SectorGSFLProbability

Annual Operating Hours by Building Type (hrs/year) 20: Food and Kindred Products 21: Tobacco Products 22: Textile Mill Products 23: Apparel and Other Textile Products 24: Lumber and Wood Products 25: Furniture and Fixtures 26: Paper and Allied Products 27: Printing and Publishing 28: Chemicals and Allied Products 29: Petroleum and Coal Products 30: Rubber and Miscellaneous 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 ope rating 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 an alyses 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) av erage annual energy consumption per lamp-andballast system using the U.S. weighted averag e 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 resi dential 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 l eads 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 li fe before a lamp failure. Appendix 6A presents the energy consumption rates for the systems DO E uses in the NIA. As discussed in the engineering analysis (Cha pter 5), DOE pairs lamps with ballas ts 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, Commerc ial and Industrial Sectors Annual Energy Consumption System Power Rating Commercial Industrial Technology Option 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-ba llast 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, Commerc ial 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 Residential Technology Option 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 Residential Technology Option
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 Residential Technology Option 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 Residential Technology Option
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 Miniat ure 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 Miniatur e 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 Co ntact 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 Contac t 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 ballas t 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 cons umption based on the U.S. weighted average annual operating hours for IRL in the resident ial and commercial s ectors as 889 hours and 3,450 hours, respectively. Appendix 6A lists the annual energy consump tion of those IRL designs used in the NIA.

6-14

### Table 6.3.13 IRL Power Rating and An nual 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 An nual 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 An nual 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

6-166-17 

### 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 Administrati on. Commercial Building Energy Consumption Survey: Micro-level data, file 2 Bu ilding 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 Administ ration. Manufacturing Energy Consumption Survey, Table 1.4: Number of Es tablishments 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/state s/files/NST-EST2008-popchg2000-2008.csv >

6 

### Economic Research Associates, Inc., and Quan tec, LLC. Revised/Updated EULs Based On Retention And Persistence Studies Re sults. Southern California Edison, 2005.