APPENDIX 11A. USER INSTRUCTIONS FOR SHIPMENTS AND NIA SPREADSHEETS
TABLE OF CONTENTS
11A.1 INTRODUCTION ................................................................................................ 11A-1 11A.2 SPREADSHEET WORKSHEETS....................................................................... 11A-1 11A.3 BASIC INSTRUCTIONS..................................................................................... 11A-2

11A-iAPPENDIX 11A. USER INSTRUCTIONS FOR SHIPMENTS AND NIA SPREADSHEET

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 Building Technologies website at: http://www.eere.energy.gov/buildings/appliance_standards/

. There is one NIA spreadsheet for commercial clothes washers. The spreadsheet posted on the DOE website represents the latest version 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 change in national energy use and net present value due to an energy efficiency 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 all equipment shipped under that standard. The differences between the standards and base cases can then be compared and the overall energy savings and present values determined.

11A.2 SPREADSHEET WORKSHEETS The commercial clothes washer NIA spreadsheet or workbook consists of the following worksheets: Input and Summary Contains user input selections under “User Inputs” and a summary table, Cumulative Energy Savings and NPV for the selected standard level efficiency distribution. The sheet contains the efficiency levels being considered for microwave ovens and the associated incremental prices. This sheet also contains base and standards case efficiency trends, and efficiency weighted average energy use and equipment price for the base and standards cases for all the product classes. Historical Shipment Contains data for historical sales of the equipment.
Base Case This sheet mainly performs the calculations leading up to the estimation of shipments, energy consumption and operating cost calculations for the base case. The sheet starts with the stock accounting of the equipment and uses the survival function to 11A-1calculate the surviving stock. It then performs calculations of replacements, and shipments going into new housing, thus yielding total shipments.
Standards Case Contains stock accounting of the equipment that helps calculate annual shipments estimates, energy savings and operating cost savings for the standards case. The energy and cost savings in a single year are the difference between the base case energy use and costs for that year and the standard case energy use and costs in the same year. Housing Projections Forecast sheet provides projected new housing construction starts and stock.
Fuel Prices This worksheet contains projected average electricity prices for the three economic scenarios.
Heat Rates The sheet contains the marginal site to source conversion factors that are used in the source energy savings calculations.
Lifetime This sheet contains the probability of survival of a microwave oven unit at a given age of the unit. The sheet also provides the average lifetime of a unit.

11A.3 BASIC INSTRUCTIONS Basic instructions for operating the NIA spreadsheets are as follows:
1. Once the NIA spreadsheets have 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. Economic Growth: To the change value, use the drop-down arrow and select the desired Growth level (Reference, Low, or High). b. Discount Rate: To the change value, type in the desired Discount Rate. c. Relative Price Elasticity: To change value, use the drop-down arrow and select the desired. d. Lifetime: To change value, type in the desired value that lies within the maximum lifetime indicated.

11A-24. Once the parameters have been set, click the “Set base case/Standards Case” button and define the efficiency distribution of the market, and the efficiency growth rate for both the base case and the standards case.
5. Once the distribution and the growth rate have been set, click the “update” button to make your defined distribution effective.
6. The results are automatically updated and are reported in the summary table for each product class to the right of the “User Inputs” box.

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