10A-i

APPENDIX 11A. USER INSTRUCTIONS FOR SHIPMENTS AND NIA 

SPREADSHEETS 

TABLE OF CONTENTS 

11A.1 INTRODUCTION ................................................................................................ 11A-1

11A.1.1 General Service Fluorescent Lamps ..................................................................... 11A-1

11A.1.2 Incandescent Reflector Lamps.............................................................................. 11A-8

11A.2 BASIC INSTRUCTIONS................................................................................... 11A-11

11A.2.1 General Service Fluorescent Lamps ................................................................... 11A-11

11A.2.2 Incandescent Reflector Lamps............................................................................ 11A-13
11A-1

APPENDIX 11A. USER INSTRUCTIONS FOR SHIPMENTS AND NIA 

SPREADSHEETS 

11A.1 INTRODUCTION 

The results obtained for the shipments analysis and the national impact analysis (NIA) 

can be examined and reproduced using the Microsoft Excel spreadsheet available on the U.S. 

Department of Energy (DOE) Building Technologies website at: 

http://www.eere.energy.gov/buildings/appliance_standards/. 

 There are two NIA spreadsheets: one spreadsheet for general service fluorescent lamps 

(GSFL), one incandescent reflector lamps (IRL). The two spreadsheets posted on the DOE 

website represent the latest versions and have been tested with Microsoft Excel 2003. 

 To execute the spreadsheet requires Microsoft Excel 2003 or a later version. The NIA 

spreadsheet performs calculations to forecast the national energy savings (NES) (i.e., the change 

in national energy use from the base to standards cases), and the net present value (NPV) due to 

an energy conservation standard. The energy use and associated costs for a given candidate 

standard level (CSL) are determined first by calculating the shipments and then calculating the 

energy use and costs for all products shipped under that CSL. The differences between the 

standards and base cases can then be compared and the overall NES and NPV determined. 

11A.1.1 General Service Fluorescent Lamps 

The NIA spreadsheet that models commercial sector GSFL consists of the following 

worksheets: 

Input and Summary Contains user input selections under “User Inputs” and a 

summary table of the cumulative NES and NPV for 4-foot 

medium bipin sockets (commercial and residential), 8-foot 

single pin slimline sockets, 8-foot recessed double contact 

high output, 4-foot T5 standard and high output sockets 

under “National Impacts Summary” for the user-selected 

TSL. 

Graphs Contains base-case and standards-case shipment, NPV, 

stock, and energy consumption graphs. 

Data Tables Contains data tables for NPV calculations, shipments, 

energy consumption, lamp stock, and other model outputs.

Res 4ftMBP HighExp_MSM Contains the user-selected market-share matrices 

(technology mix of shipments) of 4-foot medium bipin 

lamp and lamp-and-ballast shipments in the residential 
11A-2

sector. The matrices characterize those consumers with 

high lighting expertise. This sheet also includes toggle 

menus for each market-share matrix that show several 

average system characteristics at each TSL.

Res 4ftMBP NoExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 4-foot medium bipin 

lamp and lamp-and-ballast shipments in the residential 

sector. The matrices characterize those consumers with no 

lighting expertise. This sheet also includes toggle menus 

for each market-share matrix that show several average 

system characteristics at each TSL.

Comm 4ftMBP HighExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 4-foot medium bipin 

lamp and lamp-and-ballast shipments in the commercial 

sector. The matrices characterize those consumers with 

high lighting expertise. This sheet also includes toggle 

menus for each market-share matrix that show several 

average system characteristics at each TSL.

Comm 4ftMBP NoExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 4-foot medium bipin 

lamp and lamp-and-ballast shipments in the commercial 

sector. The matrices characterize those consumers with no 

lighting expertise. This sheet also includes toggle menus 

for each market-share matrix that show several average 

system characteristics at each TSL.

8ftSP HighExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 8-foot single pin slimline 

lamp and lamp-and-ballast shipments in the commercial 

sector. The matrices characterize those consumers with 

high lighting expertise. This sheet also includes toggle 

menus for each market-share matrix that show several 

average system characteristics at each TSL.

8ftSP NoExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 8-foot single pin slimline 

lamp and lamp-and-ballast shipments in the commercial 

sector. The matrices characterize those consumers with no 

lighting expertise. This sheet also includes toggle menus 

for each market-share matrix that show several average 

system characteristics at each TSL.
11A-3

8ftHO HighExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 8-foot recessed double 

contact high output lamp and lamp-and-ballast shipments in 

the industrial sector. The matrices characterize those 

consumers with high lighting expertise. This sheet also 

includes toggle menus for each market-share matrix that 

show several average system characteristics at each TSL.

8ftHO NoExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 8-foot recessed double 

contact high output lamp and lamp-and-ballast shipments in 

the industrial sector. The matrices characterize those 

consumers with no lighting expertise. This sheet also 

includes toggle menus for each market-share matrix that 

show several average system characteristics at each TSL.

T5 HighExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 4-foot T5 miniature bipin 

standard output and high output lamp and lamp-and-ballast 

shipments in the commercial sector and industrial sector, 

respectively. The matrices characterize those consumers 

with high lighting expertise. This sheet also includes 

toggle menus for each market-share matrix that show 

several average system characteristics at each TSL.

T5 NoExp_MSM Contains the user selected market-share matrices 

(technology mix of shipments) of 4-foot T5 miniature bipin 

standard output and high output lamp and lamp-and-ballast 

shipments in the commercial sector and industrial sector, 

respectively. The matrices characterize those consumers 

with no lighting expertise. This sheet also includes toggle 

menus for each market-share matrix that show several 

average system characteristics at each TSL.

Assumptions Documents various assumptions made in the commercial, 

residential and industrial sector models.

Average System Characteristics Calculates the average shipped system characteristics (e.g. 

lamp price, input power, lumen output) from the marketshare matrices.

Initial Stock Calculation Calculates the initial stocks of 4-foot medium bipin, 8-foot 

single pin slimline, 8-foot recessed double contact high 

output, 4-foot T5 miniature bipin standard and high output 

lamps from historical shipments and shipment projections. 
11A-4

The sheet also calculates the slope of the age distribution 

for fluorescent systems from historical lamp shipments and 

ballast shipment census data.

4-foot MBP Initial Ballast Stock Performs the calculations of lamp replacement shipments 

on all commercial sector 4-foot medium bipin ballasts in 

the installed base in 2011 for the base case and standards 

case. The sheet starts with the stock accounting of the 

lamp-and-ballast systems and uses the ballast lifetime and 

retrofit rate to calculate the surviving stock in each year. It 

then performs calculations of lamp replacements based on 

the lamp replacement schedule. Finally, using average 

system properties as determined by the market-share 

matrices, the sheet then calculates energy consumption, 

equipment cost, and operating cost due to this installed 

stock of ballasts for each year.

4-foot MBP New Ballast Stock Mainly performs the calculations of commercial sector 4-

foot medium bipin lamp-and-ballast system shipments after 

2011 and all lamp replacements on this installed ballast 

base in the base case and standards case. The sheet tracks 

these shipments and uses the ballast lifetime to calculate 

the surviving stock in each year. It then performs 

calculations of lamp replacements on this ballast stock 

based on the lamp replacement schedule. Finally, using 

average system properties as determined by the marketshare matrices, the sheet then calculates energy 

consumption, equipment cost, and operating cost due to this 

installed stock of ballasts for each year.

4-foot MBP Res. Init. Ballast Stock Performs the calculations of lamp replacement shipments 

on residential sector 4-foot medium bipin ballasts in the 

installed base in 2011 for the base case and standards case. 

The sheet starts with the stock accounting of the lamp-andballast systems and uses the ballast lifetime and retrofit rate 

to calculate the surviving stock in each year. It then 

performs calculations of lamp replacements based on the 

lamp replacement schedule. Finally, using average system 

properties as determined by the market-share matrices, the 

sheet then calculates energy consumption, equipment cost, 

and operating cost due to this installed stock of ballasts for 

each year.

4-foot MBP Res. New Ballast Stock Mainly performs the calculations of residential sector 4-

foot medium bipin lamp-and-ballast system shipments after 
11A-5

2011 and all lamp replacements on this installed ballast 

base in the base case and standards case. The sheet tracks 

these shipments and uses the ballast lifetime to calculate 

the surviving stock in each year. It then performs 

calculations of lamp replacements on this ballast stock 

based on the lamp replacement schedule. Finally, using 

average system properties as determined by the marketshare matrices, the sheet then calculates energy 

consumption, equipment cost, and operating cost due to this 

installed stock of ballasts for each year.

8-foot SP Initial Ballast Stock Performs the calculations of lamp replacement shipments 

on all 8-foot single pin slimline ballasts in the installed base 

in 2011 for the base case and standards case. The sheet 

starts with the stock accounting of the lamp and ballast 

systems and uses the ballast lifetime and retrofit rate to 

calculate the surviving stock in each year. It then performs 

calculations of lamp replacements based on the lamp 

replacement schedule. Finally, using average system 

properties as determined by the market-share matrices, the 

sheet then calculates energy consumption, equipment cost, 

and operating cost due to this installed stock of ballasts for 

each year.

8-foot SP New Ballast Stock Performs the calculations of 8-foot single pin slimline 

lamp-and-ballast system shipments after 2011 and all lamp 

replacements on this installed ballast base in the base case 

and standards case. In addition this sheet performs 

calculations of 4-foot medium bipin lamp-and-ballast 

system shipments after 2011 to replace some retired or 

retrofitted 8-foot T12 single pin slimline ballasts. The 

sheet calculates ballast replacements due to failure or 

retrofitting of ballasts tracked in the 8-foot SP Initial 

Ballast Stock and 8-foot SP New Ballast Stock sheets. The 

sheet tracks these shipments and uses the ballast lifetime to 

calculate the surviving stock in each year. It then performs 

calculations of lamp replacements on this ballast stock 

based on the lamp replacement schedule. Finally, using 

average system properties as determined by the marketshare matrices, the sheet then calculates energy 

consumption, equipment cost, and operating cost due to this 

installed stock of ballasts for each year.

8-foot HO Initial Ballast Stock Performs the calculations of lamp replacement shipments 

on all 8-foot recessed double contact HO ballasts in the 
11A-6

installed base in 2011 for the base case and standards case. 

The sheet starts with the stock accounting of the lamp and 

ballast systems and uses the ballast lifetime and retrofit rate 

to calculate the surviving stock in each year. It then 

performs calculations of lamp replacements based on the 

lamp replacement schedule. Finally, using average system 

properties as determined by the market-share matrices, the 

sheet then calculates energy consumption, equipment cost, 

and operating cost due to this installed stock of ballasts for 

each year.

8-foot HO New Ballast Stock Performs the calculations of 8-foot recessed double contact 

HO lamp-and-ballast system shipments after 2011 and all 

lamp replacements on this installed ballast base in the base 

case and standards case. The sheet calculates ballast 

replacements due to failure of ballasts tracked in the 8-foot 

HO Initial Ballast Stock and 8-foot HO New Ballast Stock 

sheets. The sheet tracks these shipments and uses the 

ballast lifetime to calculate the surviving stock in each year. 

It then performs calculations of lamp replacements on this 

ballast stock based on the lamp replacement schedule. 

Finally, using average system properties as determined by 

the market-share matrices, the sheet then calculates energy 

consumption, equipment cost, and operating cost due to this 

installed stock of ballasts for each year.

4-foot T5 SO Initial Ballast Stock Performs the calculations of lamp replacement shipments 

on all commercial sector 4-foot T5 miniature bipin standard 

output ballasts in the installed base in 2011 for the base 

case and standards case. The sheet starts with the stock 

accounting of the lamp-and-ballast systems and uses the 

ballast lifetime and retrofit rate to calculate the surviving 

stock in each year. It then performs calculations of lamp 

replacements based on the lamp replacement schedule. 

Finally, using average system properties as determined by 

the market-share matrices, the sheet then calculates energy 

consumption, equipment cost, and operating cost due to this 

installed stock of ballasts for each year.

4-foot T5 SO New Ballast Stock Performs the calculations of 4-foot T5 miniature bipin 

standard output lamp-and-ballast system shipments after 

2011 and all lamp replacements on this installed ballast 

base in the base case and standards case. The sheet starts 

by calculating new lamp-and-ballast system shipments due 

to new construction, fixture replacement, and renovation in 
11A-7

the commercial sector. The sheet calculates ballast 

replacements due to failure of ballasts tracked in the 4-foot 

T5 SO Initial Ballast Stock and 4-foot T5 SO New Ballast 

Stock sheets. The sheet tracks these shipments and uses the 

ballast lifetime to calculate the surviving stock in each year. 

It then performs calculations of lamp replacements on this 

ballast stock based on the lamp replacement schedule. 

Finally, using average system properties as determined by 

the market-share matrices, the sheet then calculates energy 

consumption, equipment cost, and operating cost due to this 

installed stock of ballasts for each year.

4-foot T5 HO Initial Ballast Stock Performs the calculations of lamp replacement shipments 

on all high sector 4-foot T5 miniature bipin high output 

ballasts in the installed base in 2011 for the base case and 

standards case. The sheet starts with the stock accounting 

of the lamp-and-ballast systems and uses the ballast 

lifetime and retrofit rate to calculate the surviving stock in 

each year. It then performs calculations of lamp 

replacements based on the lamp replacement schedule. 

Finally, using average system properties as determined by 

the market-share matrices, the sheet then calculates energy 

consumption, equipment cost, and operating cost due to this 

installed stock of ballasts for each year.

4-foot T5 HO New Ballast Stock Performs the calculations of 4-foot T5 miniature bipin high 

output lamp-and-ballast system shipments after 2011 and 

all lamp replacements on this installed ballast base in the 

base case and standards case. The sheet starts by 

calculating new lamp-and-ballast system shipments due to 

new construction and renovation in the industrial sector. 

The sheet calculates ballast replacements due to failure of 

ballasts tracked in the 4-foot T5 HO Initial Ballast Stock 

and 4-foot T5 HO New Ballast Stock sheets. The sheet 

tracks these shipments and uses the ballast lifetime to 

calculate the surviving stock in each year. It then performs 

calculations of lamp replacements on this ballast stock 

based on the lamp replacement schedule. Finally, using 

average system properties as determined by the marketshare matrices, the sheet then calculates energy 

consumption, equipment cost, and operating cost due to this 

installed stock of ballasts for each year.
11A-8

Equipment Prices Contains the end-user product prices and labor installation 

costs of lamps and ballasts. This worksheet also contains 

price scaling factors for the lifetimes used in the model.

Electricity Prices Contains projected average electricity for the three 

economic scenarios.

Heat Rates Contains the site-to-source conversion factors that are used 

in the source energy savings calculations for electricity.

Lamp Replacement Schedule Contains the schedule for lamp replacement by year of 

ballast life. The sheet also tracks the end of life of lamps 

installed prior to 2012.

Growth Contains the growth rate for the commercial and residential 

sectors.

11A.1.2 Incandescent Reflector Lamps 

The NIA spreadsheet that models residential and commercial sector IRL consists of the 

following worksheets: 

Input and Summary Contains user input selections under “User Inputs” and a 

summary table of the cumulative NES and NPV for 

commercial and residential incandescent reflector lamps 

(IRL) under “National Impacts Summary” for the selected 

TSL. 

Results Summary Contains summary tables of undiscounted and discounted 

energy savings, NPV, and equipment and operating costs.

IRL Plots Contains base-case and standards-case shipment, stock, 

lumen output, and NPV graphs. 

IRL – All Results Contains data tables for NPV calculations, shipments, 

energy consumption, lamp stock, and lumen output.

IRL Data Tables Contains data tables for NPV calculations, shipments, 

energy consumption, lamp stock, and lumen output. 

Mrkt Shre Mtrx-Scen. Choice Contains the market-share matrices (technology mix of 

stock) of IRL and CFL in the commercial and residential 

sector. These market share matrices reflect the scenario 
11A-9

chosen by the user (Shift Prod Sub, Shift No Prod Sub, 

Roll-up Prod Sub, Roll-up No Prod Sub, 10 percent Lumen 

Increase, RIA, or User Input). The percentage of IRL 

going to CFL or other emerging technologies is shown as 

well as average lamp characteristics in the base and 

standards case in the commercial and residential sectors. 

Mrkt Shre Mtrx-User Input Allows the user to input custom market-share matrices for 

commercial and residential IRL as well as the percentage of 

IRL going to CFL or other emerging technologies. 

Assumptions Documents various assumptions made in the commercial 

and residential sector IRL model. 

Residential Before EISA Calculates IRL lamp replacement shipments in the 

residential sector in the base case as if EISA 2007 had not 

introduced a standard. The sheet starts with the stock of 

covered commercial and residential IRL in 2005 and grows 

that stock according to a specified growth rate. It then 

divides that stock among different lamp lifetimes as 

determined by the market-share matrices and performs 

calculations of lamp replacements based on the retirement 

schedule. 

Base Case Residential IRL Calculates IRL lamp replacement shipments in the 

residential sector for the base case (this sheet takes into 

account the EISA 2007 standard). The total stock of IRL is 

calculated for each year based on the calculated growth 

rates for the residential sector. Based on the user-selected 

market share matrices, this sheet divides the stock among 

different lamp lifetimes and performs calculations of lamp 

replacements based on the retirement schedule. Finally, 

using average system properties for each lamp lifetime as 

determined by the market-share matrices, the sheet 

calculates energy consumption, equipment cost, and 

operating costs of IRL in the residential sector in the base 

case. 

Base Case Commercial IRL Calculates IRL lamp replacement shipments in the 

commercial sector for the base case. The total stock of IRL 

is calculated for each year based on the calculated growth 

rates for the commercial sector. Based on the user-selected 

market share matrices, this sheet divides the stock among 

different lamp lifetimes and performs calculations of lamp 

replacements based on the retirement schedule. Finally, 
11A-10

using average system properties for each lamp lifetime as 

determined by the market-share matrices, the sheet 

calculates energy consumption, equipment cost, and 

operating costs of IRL in the commercial sector in the base 

case. 

Standards Case Residential IRL Calculates IRL lamp replacement shipments in the 

residential sector for the standards case. The total stock of 

IRL is calculated for each year based on the calculated 

growth rates for the residential sector. Based on the userselected market share matrices, this sheet divides the stock 

among different lamp lifetimes and performs calculations 

of lamp replacements based on the retirement schedule. 

Finally, using average system properties for each lamp 

lifetime as determined by the market-share matrices, the 

sheet calculates energy consumption, equipment cost, and 

operating costs of IRL in the residential sector in the 

standards case. 

Standards Case Commercial IRL Calculates IRL lamp replacement shipments in the 

commercial sector for the standards case. The total stock 

of IRL is calculated for each year based on the calculated 

growth rates for the commercial sector. Based on the userselected market share matrices, this sheet divides the stock 

among different lamp lifetimes and performs calculations 

of lamp replacements based on the retirement schedule. 

Finally, using average system properties for each lamp 

lifetime as determined by the market-share matrices, the 

sheet calculates energy consumption, equipment cost, and 

operating costs of IRL in the commercial sector in the 

standards case. 

Standards Case Res RCFL Calculates RCFL lamp replacement shipments in the 

residential sector for the standards case. The total stock of 

IRL is calculated for each year based on the calculated 

growth rates for the residential sector. Based on the userselected market share matrices, this sheet divides the stock 

among different lamp lifetimes and types (IRL vs. RCFL) 

and performs calculations of lamp replacements based on 

the retirement schedule. Finally, using average system 

properties for each lamp lifetime as determined by the 

market-share matrices, the sheet calculates energy 

consumption, equipment cost, and operating costs of RCFL 

in the residential sector in the standards case. 
11A-11

Standards Case Comm RCFL Calculates RCFL lamp replacement shipments in the 

commercial sector for the standards case. The total stock 

of IRL is calculated for each year based on the calculated 

growth rates for the commercial sector. Based on the userselected market share matrices, this sheet divides the stock 

among different lamp lifetimes and types (IRL vs. RCFL) 

and performs calculations of lamp replacements based on 

the retirement schedule. Finally, using average system 

properties for each lamp lifetime as determined by the 

market-share matrices, the sheet calculates energy 

consumption, equipment cost, and operating costs of RCFL 

in the commercial sector in the standards case. 

Growth Rate and Penetration Calculates growth rates for both the commercial and 

residential sectors. Also contains penetration rates of 

emerging and existing technologies. 

Initial Stock and Proj. Ship. Calculates the initial (2005) stock of covered IRL in the 

commercial and residential sectors. 

Historical Shipments Contains the total historical shipments of IRL from 2001 to 

2005 as well as shipments of IRL in the commercial and 

residential sector. 

Electricity Prices Contains projected average electricity for the three 

economic scenarios. 

Heat Rates Contains the site-to-source conversion factors that are used 

in the source energy savings calculations for electricity. 

Retirement Schedules Contains the percentage of lamps retiring in each year of 

life for each lamp lifetime used in the model. 

11A.2 BASIC INSTRUCTIONS 

11A.2.1 General Service Fluorescent Lamps 

Basic instructions for operating the NIA spreadsheets for GSFL are as follows: 

1. Once you have downloaded the NIA spreadsheet file from the Web, open the file using 

Excel. At the bottom, click on the tab for the worksheet Input and Summary. 

2. Use Excel’s View/Zoom commands at the top menu bar to change the size of the display 

to make it fit your monitor. 
11A-12

3. The user can change the model parameters listed in the grey box labelled “User Inputs”. 

The parameters are: 

a. EL: To change the value, use the drop-down arrow and select the desired EL for 

each lamp type. Though T12 and T8 lamps are considered to be in the same 

product class, this spreadsheet allows separate ELs to be set for each.

b. Commercial 4-foot T12 MBP Standards-Induced Retrofit Rate: To change 

the value, type in the desired percentage annual Standards-Case Retrofit Rate. 

c. Residential 4-foot MBP Standards-Induced Conversion Rate: To change the 

value, type in the desired percentage annual rate of replacement of 4-ft T12 retired 

systems with 4-ft T8 systems for each lamp type.

d. 8-foot T12 SP Slimline Standards-Induced Retrofit Rate: To change the 

value, type in the desired percentage annual Standards-Case Retrofit Rate for each 

lamp type. 

e. Non-Regulatory Alternatives: To change the value, use the drop-down arrow 

and select the desired non-regulatory alternative. 

f. Electricity Price Trend: To change the value, use the drop-down arrow and 

select the desired Growth level (Reference, Low, or High).

g. Discount Rate: To change the value, use the drop-down arrow and select the 

desired Discount Rate (3% or 7%).

h. Year to Discount To: To change the value, type in the desired year.

i. Base Case Shipment Scenario: To change the scenario, use the drop-down 

arrow and select the desired base-case shipment scenario (existing or emerging 

technologies). 

j. Standards-Case Efficacy Shipment Scenario: To change the scenario, use the 

drop-down arrow and select the desired shipment scenario (shift or roll-up). 

k. Lighting Expertise Shipment Scenario: To change the scenario, use the dropdown arrow and select the desired expertise scenario (High or Market SegmentBased).

l. Market Segment-Base Lighting Expertise Inputs: To change the value, type in 

the desired percentage of consumers in each market segment and sector who have 

high lighting expertise. 

m. Lighting Controls Sensitivity Scenario: To turn the scenario on or off, use the 

drop-down arrow and select "ON" or "OFF". 

4. The user can run preset TSLs by clicking the quick TSL selection buttons on the right. 

5. The results are automatically updated and are reported for each product class in the 

“National Impact Summary” table. Results are also updated in the "Graphs" and "Data 

Tables" worksheets. 
11A-13

11A.2.2 Incandescent Reflector Lamps 

Basic instructions for operating the NIA spreadsheet for IRL are as follows: 

1. Once the NIA spreadsheet has been downloaded from the Web, open the file using Excel. 

At the bottom, click on the tab for the worksheet Input and Summary. 

2. Use Excel’s View/Zoom commands at the top menu bar to change the size of the display 

to make it fit your monitor. 

3. The user can change the model parameters listed in the grey box labelled “User Inputs”. 

The parameters are: 

a. TSL: To change the value, use the drop-down arrow and select the desired TSL 

for IRL. 

b. IRL Standards Case Shipments Scenario: To change the value, use the dropdown arrow and select the desired shipment scenario (Shift Prod Sub, Shift No 

Prod, Roll-up Prod Sub, Roll-up No Prod, 10 percent lumen increase sensitivity). 

If user input is chosen, click the hyperlink to populate custom market-share 

matrices.

c. IRL Base Case Shipments Scenario: To change the value, use the drop-down 

arrow and select the desired shipment scenario (Emerging or Existing 

Technologies).

d. IRL RIA Non-Regulatory Alternative: To change the value, use the drop-down 

arrow and select the desired non-regulatory alternative in the regulatory impact 

analysis.

e. Electricity Price Trend: To change the value, use the drop-down arrow and 

select the desired Growth level (Reference, Low, or High). 

f. Discount Rate: To change the value, use the drop-down arrow to select the 

desired discount rate (3% or 7%).

g. Year to Discount To: To change the value, type in the desired year.

h. IRL Installed Stock Adjustment (Standards Case): To change the value, type 

in the desired percentage stock adjustment for the standards case. 

i. Emerging Tech Sensitivity: To change the value, use the drop-down arrow to 

select the desired scenario for emerging technologies (normal or modified) 

j. EL4 Lifetime: To change the value, use the drop-down arrow to select the 

desired lifetime for the representative EL4 lamp (4,000 or same as the baseline 

lamp) 

k. EL5 Lifetime: To change the value, use the drop-down arrow to select the 

desired lifetime for the representative EL4 lamp (4,000 or same as the baseline 

lamp). 

4. The results are automatically updated and are reported for each product class in the 

“National Impact Summary” table. Results are also updated in the “IRL Plots” and “IRL 

Data Tables” worksheets.