A.2-i APPENDIX A-2. ACRONYMS AND ABBREVIATIONSA.2-1 APPENDIX A-2. ACRONYMS AND ABBREVIATIONS

ACEEE American Council for an Energy-Efficient Economy ACT Advanced Conservation Technology ADL Arthur D. Little, Inc. AEO DOE/EIA's Annual Energy Outlook AGA America Gas Association AHAM Association of Home Appliance Manufacturers ANOPR Advance Notice of Proposed Rulemaking ANSI American National Standards Institute ASHRAE American Society of Heating, Refrigeration, and Air-Conditioning

Engineers, Inc. ASTM American Society for Testing and Materials BRS DOE's Office of Building Research and Standards BTS DOE's Office of Building Technology, State and Community Programs Btu British thermal unit C elemental carbon CEC California Energy Commission CFR Code of Federal Regulations CNG Connecticut Natural Gas CO carbon monoxide CO2 carbon dioxide CPI Consumer Price Index CPSC Consumer Product Safety Commission DOE U.S. Department of Energy (also “the Department”) EEI Edison Electric Institute EIA DOE's Energy Information Administration EF energy factor EMPA Energy Market and Policy Analysis EPA U.S. Environmental Protection Agency EPCA Energy Policy and Conservation Act EPRI Electric Power Research Institute FEMP Federal Energy Management Program GAMA Gas Appliance Manufacturers Association GRI Gas Research Institute GRIM Government Regulatory Impact Model GW gigawatt (109watts) HCFC hydrochlorofluorocarbon HFC hydrofluorocarbon HUD U.S. Department of Housing and Urban Development IID intermittent ignition deviceA.2-2 ImBuild Impact of Building Energy Efficiency Programs model ITS Intertek Testing Service kWh kilowatt hours (103 watt-hours) LBNL Lawrence Berkeley National Laboratory LCC life-cycle cost LPG liquid petroleum gas MIA manufacturer impact analysis MMBtu million Btu MtC million metric tonnes of carbon NAECA National Appliance Energy Conservation Act NEEA Northwest Energy Efficiency Alliance NEGA New England Gas Association NEMS National Energy Modeling System NEMS-BRS National Energy Modeling System-Building Research and Standards version NEPA National Environmental Policy Act NES national energy savings NFGC National Fuel Gas Code NGC Natural Gas Council NIST National Institute of Standards and Technology NOx oxides of nitrogen NOAA National Oceanic and Atmospheric Administration NOPR Notice of Proposed Rulemaking NPV net present value NRDC National Resources Defense Council NRECA National Rural Electric Cooperative Association NU Northeast Utilities NWPPC Northwest Power Planning Council OOE Oregon Office of Energy O&M Operations and Maintenance ORNL Oak Ridge National Laboratory PNNL Pacific Northwest National Laboratory Pon rated input power PVC polyvinylchloride quad quadrillion (10 15 ) Btu R&D Research and Development RE recovery efficiency RECS Residential Energy Consumption Survey RIA regulatory impact analysis ROI return on investment SG&A selling, general, and administration costsA.2-3

S&P Standard & Poor’s SO2 sulfur dioxide TAG Technical Advisory Group TANK water heater simulation model (gas) ton short ton (2000 lbs) tonne metric ton (1000 kilograms) TSD Technical Support Document UA standby heat loss coefficient UEC unit energy consumption VP Virginia Power WATSIM Water Heater Simulation Model (electric) WHAM Water Heater Analysis Model