APPENDIX 11A. USER INSTRUCT IONS FOR SHIP MENTS AND NIA SPREADSHEETS TABLE OF CONTENTS
11A.1 INTRODUCTION ................................................................................................ 11A-1 11A.1.1 Cooktops and Ovens ............................................................................................. 11A-1 11A.1.2 Microwave Ovens ................................................................................................. 11A-3 11A.2 BASIC INSTRUCTIONS..................................................................................... 11A-4

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

11A.1 INTRODUCTION The results obtained for the shipments analys is and the national impact analysis (NIA) can be examined and reproduced using the Micr osoft Excel spreadsheet available on the U.S. Department of Energy Building Technologies website at: http://www.eere.energy.gov/buildings/appliance_standards/

. There are a total of five NIA spreadsh eets, one each for the following products: dishwashers, dehumidifiers, cooktops and ovens , microwave ovens, and commercial clothes washers. The five spreadsheets posted on the DOE website represent the latest versions and have been tested with Microsoft Excel 2000. To execute the spreadsheet requires Micr osoft Excel 2000 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. Th e energy use and associated costs for a given standard are determined first by calculating the shipments and then calc ulating 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 th e overall energy savings and present values determined.
11A.1.1 Cooktops and Ovens The cooktops and oven NIA spreadsheet or workbook consists of the following worksheets: Summary Contains user input selecti ons under “User Inputs” and summary tables, Cumulative Energy Savings and NPV for the all standard levels. The “User Inputs” contains two buttons “Recalculate” and “Show Charts”, which allow the user to select product category to perform the calculations for. Clic king on “Show Charts” allows the user to select a product class, and select a standard level for cooktops and oven. After the sele ction, clicking the “Recalculate” button will recalculate the results and set the default back on standard level 1. Cooktop Base Case This sheet mainly performs the energy consumption and operating cost calculations for the cookt ops base case. The sheet uses shipments estimate and UECs to perform the energy consumption calculations.

11A-1Cooktop Stds Case

Oven Base Case

Oven Stds Case

Efficiency and Price Base Case Shipment Gas Cooking

Base Case Shipment Elec Cooking

Base Case Ship Charts

New Saturation
Historical Shipment Housing Projections

Fuel Prices This sheet performs the en ergy and operating cost savings calculations for the cooktops sta ndards 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. This sheet mainly performs the energy consumption and operating cost calculations for the ovens ba se case. The sheet uses shipments estimate and UECs to perform the energy consumption calculations. This sheet performs the en ergy and operating cost savings calculations for the ovens standa rds 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. This sheet provides the efficien cy and price data for all product classes. This sheet contains the main sh ipments model for gas cooking and provides the shipments estimates for gas cooking. The sheet further disaggregates the gas cooking shipments into shipments attributable to product classes for both cooktops and oven, based on their market shares. This sheet contains the main ship ments model for electric cooking and provides the shipments estimates for gas cooking. The sheet further disaggregates shipments fo r electric cooking into shipments attributable to product classes for both cooktops and oven, based on their market shares. This sheet provides the details of shipments estimates in the form of a chart. This sheet provides produc t saturation in new homes. The saturations are provided by product class. Contains data for historical sales of the equipment. Contains Forecast sheet provides projected new housing construction starts and stock. This worksheet contains projected average electricity and gas prices for the three economic scenarios.

11A-2Heat Rates The sheet contains the marginal site to source conversion factors that are used in the source en ergy savings calculations, for both electricity and gas. Lifetime This sheet contains the probability of survival for a given age of the equipment.
11A.1.2 Microwave Ovens The microwave oven NIA spreadsheet or wor kbook consists of the following worksheets: Input and Summary Contains user input selections under “User Inputs” and a summary table, Cumulative Energy and Water Savings and NPV for the selected standard level efficiency distribution. The sheet contains the efficiency levels being cons idered for commercial clothes washers and the associated incremental prices. This sheet also contains base and standards case e fficiency trends, and efficiency weighted average energy use and equipment price for the base and standards cases. Historical Shipment Contains data for historical sa les of comm ercial clothes washers. Base Case This sheet mainly performs the calculations leading up to the estimation of shipments, ener gy and water 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 calculate the surviv ing stock. It then performs calculations of replacements, and shipments due to new multi

family housing. The sheet calculates replacement units and shipments resulting from new construction separately and aggregates them into total shipments. Standards Case Contains stock accounting of th e equipment that helps calculate annual shipments estimates, en ergy and water savings and operating cost savings for the standards case. The energy, water and cost savings in a single ye ar are the difference between the base case energy use, water use a nd costs for that year and the standard case energy use, water use and costs in the same year. Housing Projections Forecast sheet prov ides projec ted new housing construction starts in multi-family housing. Fuel and Water Prices This worksheet contains projected average energy and water prices for the three economic scenarios.

11A-3Heat Rates The sheet contains the marginal site to source conversion factors that are used in the source en ergy savings calculations, for both electricity and gas. Lifetime This sheet contains the probability of survival of a clothes washer unit at a given age and the average lifetime of a unit.

11A.2 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 me nu bar to change the size of the display to make it fit your monitor.
3. The user can change the model parameters lis ted 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 valu e, use the drop-down arrow and select the desired impact (this parameter is not considered in the cooking products analysis). d. Lifetime: To change value, type in the desired value that lies within the maximum lifetime indicated.
4. Once the parameters have been set, click the “Set base case/Standards Case” button and define the efficiency distribution of the mark et, and the efficiency growth rate for both the base case and the standards case.
5. Once the distribution and the growth rate ha ve 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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