APPENDIX 10A. USER INSTRUCTIONS FOR NATIONAL IMPACT 

ANALYSIS SPREADSHEET 

TABLE OF CONTENTS 

10A.1 USER INSTRUCTIONS ...................................................................................... 10A-1 

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APPENDIX 10A. USER INSTRUCTIONS FOR NATIONAL IMPACT 

ANALYSIS SPREADSHEET 

10A.1 USER INSTRUCTIONS 

The results obtained in the shipments and national impact analysis (NIA) analyses can be 

examined and reproduced using the Microsoft Excel spreadsheets available on the U.S. 

Department of Energy (DOE)’s website at: 

http://www1.eere.energy.gov/buildings/appliance_standards/commercial/small_electric_motors.html. 

The spreadsheets are called “NIA_SmallMotor_CS.xls” and 

“NIA_SmallMotor_Polyphase.xls” and they enable the user to perform a national impact 

analysis of small electric motor standards for two product categories: polyphase and capacitorstart (including capacitor-start induction-run (CSIR) and capacitor-start capacitor-run (CSCR)) 

motors. To run the spreadsheets, the user needs to have Microsoft Excel 2003 or a later version. 

The NIA spreadsheets perform calculations to forecast the changes in national energy 

(NES) and net present value (NPV) due to an energy conservation standard. The energy use and 

associated costs for a given standard are determined first by calculating the shipments and then 

calculating the energy use and costs for a product class. The differences between the standards 

and base cases (absent a national standard) can then be compared and the NES and NPV 

determined. 

Polyphase 

The polyphase NIA spreadsheet, or workbook, consists of the following worksheets: 

Introduction	 This worksheet summarizes the context for DOE’s rulemaking 

and describes the NES and NPV concepts. 

Worksheet Directory	 This worksheet contains the same worksheet descriptions as 

this appendix. 

Scenario Selection	 This sheet allows the user to select from a variety of 

parameters to define the scenario for which they wish to 

calculate the NES and NPV. Parameters include the national 

discount rate, the market growth model, the elasticity to 

enclosed motors, the electricity price scenario, and the fraction 

of reactive power costs to include in the NPV. 

NIA Summary	 This worksheet summarizes the results of the NIA analysis. It 

shows the aggregate shipments along with the difference in 

purchase and operating costs and energy consumption between 

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NIA Details 

ShipmentsDrivers 

ShipmentsForecast 

Shipments Forecast Chart 

Standards-Case Shipments 

Shipments Data 

Retirement Function 

LCC Inputs & Effic. Distrib. 

the base and each considered standards case. It collects these 

values to show the NES and NPV for each trial standard level. 

This worksheet provides the accounting and results for both the 

energy and economic impacts of each standard level for 

polyphase small electric motors. This is the main calculation 

worksheet for this product category and integrates the 

appropriate inputs from each of the other worksheets. 

This worksheet provides the data for the macro-economic 

drivers for small electric motors shipments. A macro-economic 

driver is a factor in the national economy that influences the 

demand for small electric motor sales. The three drivers 

selected by the DOE for small electric motor shipments include 

the value of manufacturing shipments, the amount of total 

commercial floor space, and the total number of residential 

homes. 

This worksheet provides the detailed forecast of polyphase 

motor shipments by product class. 

This chart shows the total polyphase small motor shipment 

forecasts in each of the four considered market growth 

scenarios. 

This chart shows the shipments in the base and standards cases, 

illustrating the effects of elasticity. 

This worksheet provides the input data that were used for 

initiating the shipments model with shipments by product class 

for 2008. 

This worksheet contains the small electric motor retirement 

function and produces the retirement rates. The probabilities of 

retirement generated in this worksheet are used to calculate the 

annual retirements in the stock columns of the NIA Details 

sheet. 

Data in this worksheet are the mean values for the different 

variables from the Monte Carlo simulation runs of the LCC for 

individual design lines (1 hp, 4 pole motor only). These data 

provide the inputs regarding increases of initial cost, and the 

decrease in energy consumption per motor for each standard 

level. This sheet also provides the efficiency distribution for 

the base case and each standards case, and calculates the 

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shipment-weighted cost, energy use, and reactive power for the 

representative product class. 

Scaling Costs & Losses	 This worksheet implements the Departments’ scaling relations 

for price, losses, and reactive power, between the 

representative product class and each of the other product 

classes. It shows the efficiency (in percent) corresponding to 

each efficiency level, for each product class. 

Electricity Prices+Heat Rates	 This worksheet provides the marginal heat rates (the ratio of 

source energy to site energy), the long term energy price trends 

(in each of four scenarios), and the retail energy prices for 

small electric motors. It also contains several parameters for 

determining the cost and primary energy requirements of 

reactive power. 

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

After downloading the NIA spreadsheet file from DOE's website, open the file using 

Excel. At the bottom, click on the tab for the worksheet “Scenario Selection.” This worksheet 

provides the controls for choosing which combination of input and model parameters to use in 

summary calculations. The main parameter that affects the NPV is the discount rate. The 

worksheet allows the user to change the discount rate in cell E6. The results NES, NPV, and their 

constituent parts are then displayed on the sheet “TSL Summary.” 

Capacitor-Start 

The capacitor-start NIA spreadsheet, or workbook, consists of the following worksheets: 

Introduction	 This worksheet summarizes the context for DOE’s rulemaking 

and describes the NES and NPV concepts. 

Worksheet Directory	 This worksheet contains the same worksheet descriptions as 

this appendix. 

Scenario Selection	 This sheet allows the user to select from a variety of 

parameters to define the scenario for which they wish to 

calculate the NES and NPV. Parameters include the national 

discount rate, the market growth model, the CSIR/CSCR 

market share model, the elasticity to enclosed motors, the 

electricity price scenario, and the fraction of reactive power 

costs to include in the NPV. The user may also select a pair of 

efficiency levels for CSIR and CSCR motors, and see the 

resulting NES and NPV displayed. 

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NIA Summary 

Market Segmentation 

NIA Details 

ShipmentsDrivers 

ShipmentsForecast 

Shipments Forecast Chart 

Standards-Case Shipments 

This worksheet summarizes the results of the NIA analysis. It 

shows the aggregate shipments along with the difference in 

purchase and operating costs and energy consumption between 

the base and each considered standards case. It collects these 

values to show the NES and NPV for each trial standard level. 

This sheet does NOT update automatically. Instead, the user 

must run a macro to generate this sheet by clicking on the 

button “Generate Summary.” 

This worksheet summarizes the results of the NIA analysis in 

the segmented market scenario. It shows the same information 

as the “NIA Summary” sheet, but disaggregated into space 

constrained and non-space-constrained applications, as well as 

their sum. This sheet does NOT update automatically. Instead, 

the user must run a macro to generate this sheet by clicking on 

the button “Generate Segmented Market Summary.” 

This worksheet provides the accounting and results for both the 

energy and economic impacts of one standard level for 

capacitor-start small electric motors; the level analyzed is set 

by selecting a CSIR and CSCR level from the drop-down 

menus on the sheet “Scenario Selection.” This is the main 

calculation worksheet for this product category and integrates 

the appropriate inputs from each of the other worksheets. 

This worksheet provides the data for the macro-economic 

drivers for small electric motors shipments. A macro-economic 

driver is a factor in the national economy that influences the 

demand for small electric motor sales. The three drivers 

selected by the DOE for small electric motor shipments include 

the value of manufacturing shipments, the amount of total 

commercial floor space, and the total number of residential 

homes. 

This worksheet provides the detailed forecast of motor 

shipments by product class. It also implements the CSIR/CSCR 

market share model, and displays the current and forecast 

market shares for CSIR and CSCR motors under the selected 

combination of CSIR and CSCR efficiency levels. 

This chart shows the total CSIR and CSCR small motor 

shipment forecasts in each of the four considered market 

growth scenarios. 

This chart shows the shipments in the base and standards cases, 

illustrating the effects of elasticity. 

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Shipments Data This worksheet provides the input data that were used for 

initiating the shipments model with shipments by product class 

for 2008. 

Retirement Function This worksheet contains the small electric motor retirement 

function and produces the retirement rates. The probabilities of 

retirement generated in this worksheet are used to calculate the 

annual retirements in the stock columns of the NIA Details 

sheet. 

CSIR LCC Inputs & Effic Distrib 

Data in this worksheet are the mean values for the different 

variables from the Monte Carlo simulation runs of the LCC for 

individual design lines (1/2 hp, 4 pole CSIR motor only). These 

data provide the inputs regarding increases of initial cost, and 

the decrease in energy consumption per motor for each 

standard level. This sheet also provides the CSIR efficiency 

distribution for the base case and each standards case, and 

calculates the shipment-weighted cost, energy use, and reactive 

power for the representative product class. 

CSIR Scaling Costs & Losses	 This worksheet implements the Departments’ scaling relations 

for price, losses, and reactive power, between the 

representative CSIR product class and each of the other CSIR 

product classes. It shows the efficiency (in percent) 

corresponding to each efficiency level, for each product class. 

CSCR LCC Inputs & Effic Distrib 

Data in this worksheet are the mean values for the different 

variables from the Monte Carlo simulation runs of the LCC for 

individual design lines (3/4 hp, 4 pole CSCR motor only). 

These data provide the inputs regarding increases of initial 

cost, and the decrease in energy consumption per motor for 

each standard level. This sheet also provides the CSCR 

efficiency distribution for the base case and each standards 

case, and calculates the shipment-weighted cost, energy use, 

and reactive power for the representative product class. 

CSCR Scaling Costs & Losses	 This worksheet implements the Departments’ scaling relations 

for price, losses, and reactive power, between the 

representative CSCR product class and each of the other CSCR 

product classes. It shows the efficiency (in percent) 

corresponding to each efficiency level, for each product class. 

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Electricity Prices+Heat Rates	 This worksheet provides the marginal heat rates (the ratio of 

source energy to site energy), the long term energy price trends 

(in each of four scenarios), and the retail energy prices for 

small electric motors. It also contains several parameters for 

determining the cost and primary energy requirements of 

reactive power. 

All Levels Summary	 This worksheet shows the same information as displayed on 

the “TSL Summary” sheet, but for every combination of 

possible standard levels for CSIR and CSCR motors. The user 

must click the button labeled “Generate Summary” to update 

this sheet to reflect user’s selected scenario. Tables show the 

results for both 7% and 3% discount rates. The Summary tables 

may be generated for the segmented market model instead by 

clicking on the “Mkt Seg Summary” button. 

SummaryTable	 The calculations on the sheet “All Levels Summary” are used 

to populate this table, showing the NES, NPV at each discount 

rate, and CSIR and CSCR LCC savings for each combination 

of CSIR and CSCR efficiency levels. The combinations DOE 

chose as its TSLs are highlighted. 

AllShipments	 This worksheet lists the shipments of each product class under 

each of the Department’s 8 TSLs, as well as the base case. To 

update this sheet, the user must click on the button labeled 

“Generate AllShipments” 

Mkt Segmented Shipments	 This worksheet lists the shipments of each product class under 

each of the Department’s 8 TSLs, as well as the base case (no 

standards), using the segmented market model. To update this 

sheet, the user must click on the button labeled “Generate Mkt 

Seg Shipments.” 

CSIR CSCR Market Share Model 

This worksheet shows the calculations used to determine the 

parameters of the Department’s CSIR/CSCR market share 

model, as well as the standard deviations for these parameters. 

Basic instructions for operating the capacitor-start NIA spreadsheets are as follows: 

After downloading the NIA spreadsheet file from DOE's website, open the file using 

Excel. At the bottom, click on the tab for the worksheet “Scenario Selection.” This worksheet 

provides the controls for choosing which combination of input and model parameters to use in 

summary calculations. The main parameter that affects the NPV is the discount rate. The 

worksheet allows the user to change the discount rate in cell E6. The results NES, NPV, and their 

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constituent parts are displayed on the sheet “TSL Summary” after the user clicks the button on 

that sheet labeled “Generate Summary.” 

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