Complete List of Energy Words

Energy Glossary

A - ACBM, Active power, Active solar, Aftermarket converted vehicle, Aftermarket vehicle converter, Air conditioning, All-electric home, Alternate energy source for primary heater, Alternating current (AC), Alternative fuel (Methanol, denatured ethanol, and other alcohols, fuel mixtures containing 85 percent or more by volume of methanol, denatured ethanol, and other alcohols with gasoline or other fuels -- natural gas, liquefied petroleum gas (propane), hydrogen, coal-derived liquid fuels, fuels (other than alcohol) derived from biological materials (biofuels such as soy diesel fuel), electricity (including electricity from solar energy.)), Alternative-fuel vehicle (AFV), Alternative fuel vehicle converter, Ampere, Anthracite, Appliance efficiency index, Appliance efficiency standards, Asphalt, Asphalt (refined), Associated natural gas, ASTM, Atmospheric crude oil distillation, Automobile and truck classifications, Auxiliary generator, Average vehicle fuel consumption, Vehicle Mileage, Aviation gasoline (finished), Aviation gasoline blending components

B - Backup fuel, Backup Generator, Backup power, Barrel, Base (cushion) gas, Baseboard heater, Bbl, bbl/d, bbl/sd, bcf, Benzene (C6H6), Bi-fuel vehicle, Biodiesel, Biofuels, Biomass, Biomass gas, Bitumen, Bituminous coal, Black liquor, Black lung benefits, Blast furnace, Blast-furnace gas, Blending components, Blending plant, BLS, BOE, Boiler, Boiler fuel, Boiling-water reactor (BWR), Bonded petroleum imports, Bone coal, Bottled gas, Bottled gas, LPG, or propane, Bottom ash, Bottom-hole contribution, Bp, Break-even cutoff grade, Breccia, Breeder reactor, British thermal unit, Btu, Btu conversion factors, Btu per cubic foot, BTX, Building shell conservation feature, Building shell (envelope) DSM program, Built-in electric units, Bunker fuels, Bus, Butane (C4H10), Butylene (C4H8), Buy-back oil, Bypassed footage, Byproduct

C - C4H, Calcium sulfate, Canadian deuterium uranium reactor (CANDU), Cannel coal, Capacity factor, Capacity utilization, Captive coal, Captive refinery MTBE plants, Captive refinery oxygenate plants, Carbon black, Carbon cycle, Carbon dioxide (CO2), Carbon dioxide equivalent, Carbon flux, Carbon intensity, Carbon output rate, Carbon sequestration, Carbon sink, Carburetor, Casinghead gas (or oil well gas), Cast silicon, Catalyst coke, Catalytic converter, Catalytic cracking, Catalytic hydrocracking, Catalytic hydrotreating, Catalytic reforming, CDD, Central chiller, Central cooling, Central physical plant, Central warm air furnace, Centralized water heating system, Cesspool, CFC, Cfs, Charge capacity, Chemical separation, Chlorofluorocarbon (CFC), CIF (cargo, insurance and freight), CIF (cost, insurance, freight), Circuit, Circuit-mile, Citygate, Clean Development Mechanism (CDM), Clinker, Cloud condensation nuclei, CO control period ("seasons"), Coal, Coal analysis: Proximate analysis, Agglomerating, Agglutinating, Coal bed, Coal bed degasification, Coal bed methane, Coal briquets, Coal carbonized, Coal chemicals, Coal coke, Coal consumption, Coal delivered, Coal exports, Coal face, Coal fines, Coal gas, Coal gasification, Coal grade: Briquettes, Cleaned coal or prepared coal, Compliance coal, Culm and silt, Low-sulfur coal, Metallurgical coal (or coking coal), Pulverized coal, Slack coal, Steam coal, Stoker coal, Coal imports, Coal liquefaction, Coal mining productivity, Coal preparation, Coal-producing regions (Coal producing districts), Coal production, Coal rank, Coal sampling (Face channel or channel sample: Column sample, Bench sample, Composite sample), Coal stocks, Coal sulfur, Coal Synfuel, Coal type, Coal zone, Cofiring, Cogeneration, Cogeneration system, Cogenerator, Coke (coal), Coke (petroleum), Coke breeze, Coke button, Coke oven gas, Coke plants, Coking - Delayed Coking, Flexicoking, Fluid Coking, Coking coal, Cold-deck imputation, Combined cycle, Combined cycle unit, Combined heat and power (CHP) plant, Combined hydroelectric plant, Combined pumped-storage plant, Combustion, Combustion chamber, Commingling, Commissioned agent, Compact fluorescent bulbs, Competitive transition charge, Completion (oil/gas production), Completion date (oil/gas production), Compliance coal, Compressed natural gas (CNG), Compressor station, Concentrating solar power or solar thermal power system, Concentrator, Condensate (lease condensate), Condenser cooling water, Conditional energy intensity, Conditionally effective rates, Conductor, Connected load, Connection, CO nonattainment area, Conservation and other DSM, Construction costs (of the electric power industry), Construction expenditures (of the electric power industry), Construction pipeline (of a nuclear reactor), Consumer (energy), Consumer charge, Consumption, Continuous delivery energy sources, Continuous mining, Contracted gas, Conventional gasoline, Conventional hydroelectric plant, Conventional mill (uranium), Conventional mining, Conventional oil and natural gas production, Conventional thermal electricity generation, Conventionally fueled vehicle, Conversion company, Conversion factor, Converted (alternative-fuel) vehicle, Cooling, Cooling degree-days, Cooling pond, Cooling system, Cord of wood, Correlation (statistical term), Cost model for undiscovered resources, Cost of retained earnings, Costs (imports of natural gas), Criteria pollutant, Crop residue, Crude oil, Crude oil acquisitions (unfinished oil acquisitions), Crude oil f.o.b. price, Crude oil input, Crude oil landed cost, Crude oil less lease condensate, Crude oil losses, Crude oil production, Crude oil qualities, Crude oil refinery input, Crude oil stocks, Crude oil, refinery receipts, Crystalline fully refined wax, Crystalline other wax, natural gas, Cull wood, Culm, Cumulative depletion, Current (electric), Cut-off grade (uranium), Cycle/reactor history, Cycling (natural gas)

D - Dam, Decatherm, Dedicated reserves, Deforestation, Degasification system, Degradable organic carbon, Delayed coking, Delivered energy, Delivered (gas), Deliveries (electric), Demonstrated reserves, Demonstrated reserve base (coal), Depletion (coal), Design electrical rating (capacity) net, Desulfurization, Development drilling, Development well, Diesel-electric plant, Diesel fuel, Diesel fuel system, Direct electricity load control, Direct nonprocess end use, Direct process end use, Directional (deviated) well, Discharged fuel, Discrete-delivery energy sources, Dispatching, Disposition - natural gas, Disposition - petroleum, Distillate fuel oil (No. 1 Distillate - No. 1 Diesel Fuel, No. 1 Fuel Oil, No. 2 Distillate, No. 2 Diesel Fuel, Low Sulfur No. 2 Diesel Fuel, High Sulfur No. 2 Diesel Fuel, No. 2 Fuel oil (Heating Oil), No. 4 Fuel, No. 4 Diesel Fuel and No. 4 Fuel Oil), Distillation unit (atmospheric), Distributed/point-of-use water-heating system, District heat, Diversity exchange, DOE, Dredge mining, Drift mine, Drilling – Exploratory, Developmental, Directional, Drilling and equipping of wells, Drilling arrangement, Dry bottom boiler, Dry (coal) basis, Dry gas, Dry natural gas, Dry natural gas production, Dry production, Dual fuel vehicle (1), Dual fuel vehicle (2), Dual-fired unit, Dump energy

E - E85, E95, EIA, Electric baseboard, Electric current, Electric energy, Electric generation, Electric generation industry, Electric generator, Electric hybrid vehicle, Electric industry reregulation, Electric motor vehicle, Electric plant (physical), Electric power, Electric power grid, Electric power plant, Electric pump for well water, Electric system loss, Electric system reliability, Electric utility, Electric utility company, Electricity demand, Electricity generation, Electricity only plant, Electrochemical process, Elution, Emergency backup generation, Emergency energy, Emissions, Emissions coefficient, Energy audit, Energy broker system, Energy charge, Energy conservation features, Energy consumption, Energy demand, Energy efficiency, Energy efficient motors, Energy exchange, Energy expenditures, Energy Information Administration (EIA), Energy intensity (Commercial Buildings Energy Consumption Survey), Energy loss, Energy loss (power), Energy management and control system (EMCS), Energy management practices, Energy production, Energy reserves, Energy sale(s), Energy savings, Energy source, Energy used in the home, Energy-use sectors, Engine size, Enriched uranium, Enrichment feed deliveries, Environmental Protection Agency (EPA), EPA certification, EPA composite MPG, Equilibrium cycle, ETBE (ethyl tertiary butyl ether), Ethane (C2H6), Ethanol (CH3-CH2OH), Ether, Ethylene, Ethylene dichloride, Evacuated-tube collector, Evaporation pond, Evaporative cooler (swamp cooler), Exchange - electricity, Exchange energy, Natural Gas Exchange, Petroleum Exchange, Exhaust fan, Exploration drilling, Exploratory well, Extraction loss, Extractive industries

F - Fabricated fuel, Fahrenheit, Fast breeder reactor (FBR), Federal Energy Regulatory Commission (FERC), Feeder line, Fertile material, Field production, Field separation facility, Finished leaded gasoline, Finished motor gasoline, Finished unleaded gasoline, First purchase (of crude oil), Fissile material, Fission, Fixed carbon, Flared natural gas, Fleet vehicle, Flexible fuel vehicle, Flexicoking, Floor (coal), Floor, wall, or pipeless furnace, Flow control, Flue, Flue gas desulfurization, Flue-gas desulfurization unit (scrubber), Flue-gas particulate collector, Fluid catalytic cracking, Fluid coking, Fluidized-bed combustion, Fluorescent lamp, Fluorescent light bulbs, Fluorescent lighting other than compact fluorescent bulbs, Flux material, Fly ash, Fossil fuel, Fossil-fuel electric generation, Fossil fuel plant, Fossil fuel steam-electric power plant, Foundry, Foundry coke, Fractionation, Framework Convention on Climate Change (FCCC), Free well, Fresh feed input, Fresh feeds, FRS, Fuel cell, Fuel cycle, Fuel efficiency, Fuel emergencies, Fuel ethanol (C2H5OH), Fuel expenses, Fuel/fabricator assembly identifier, Fuel injection, Fuel oil, Fuel oil supplier, Fuel ratio, Fuel switching capability, Fuel-switching DSM program assistance, Fuel wood, Fuels solvent deasphalting, Fugitive emissions, Full forced outage, Fumarole, Furnace, Furnace coke plant

G - Gallon, Gas, Gas cooled fast breeder reactor (GCFB), Gas oil, Gas plant operator, Gas processing unit, Gas to liquids (GTL), Gas turbine plant, Gas well, Gasification, Gasohol, Gasoline, Gasoline blending components, Gasoline grades ( Regular gasoline, Midgrade gasoline, Premium gasoline), Gasoline motor, (leaded), Gasoline motor, (unleaded), Generation company, Generator capacity, Generator nameplate capacity (installed), Geologic assurance, Geologic considerations, Geological and geophysical (G&G) costs, Geopressured, Geothermal energy, Geothermal plant, Geyser, Giga, Gigawatt (GW), Gigawatt-electric (GWe), Gigawatthour (GWh), Gilsonite, Global climate change, Global warming, Global warming potential (GWP), Greenhouse effect, Greenhouse gases, Green pricing, Grid, Gross energy intensity, Gross gas withdrawal, Gross vehicle weight rating (GVWR), Gross withdrawals, GWe, Gypsum

H - Half-life, Halogen lamp, Halogenated substances, Heat content, Heat pump, Heat pump (air source), Heat pump (geothermal), Heat pump efficiency, Heat rate, Heated floorspace, Heating degree-days (HDD), Heating equipment, Heating intensity, Heating stove burning wood, coal, or coke, Heating value, Heavy gas oil, Heavy metals, Heavy oil, Heavy rail, Heavy water, Heavy-water-moderated reactor, Heliostat, Henry Hub, High efficiency ballast, High efficiency lighting, High-intensity discharge (HID) lamp, High-mileage households, High-temperature collector, Highwall, Hinshaw pipeline, Holding pond, Horizontal axis wind turbine, Horsepower, Hot dry rock, Hot tub, Household energy expenditures, Housing unit, Hub height, Humidifier, Humidity, HVAC, HVAC conservation feature, HVAC DSM program, Hybrid transmission line, Hydraulic fracturing, Hydraulic head, Hydrocarbon, Hydrochlorofluorocarbons (HCFCs), Hydrocracking, Hydroelectric power, Hydrofluorocarbons (HFCs), Hydrogen, Hydrotreating, Hydroxyl radical (OH), Hypothetical resources (coal)

I - Identified resources, IEA: International Energy Agency , Impedance, Imported crude oil, Improved recovery, Inadvertent power exchange, Incandescent lamp, Incandescent light bulbs, including regular or energy-efficient light bulbs, Incremental energy costs, Independent power producer, Independent system operator (ISO), Indicated reserves, coal, Indirect utility cost, In-house Demand-Side Management (DSM) program sponsor, Initial enrichment, Inoperable capacity, In situ leach mining (ISL), Installed nameplate capacity, Instantaneous peak demand, Instantaneous water heater, Insulation, Insulation around heating and/or cooling ducts, Insulation around hot-water pipes, Insulation around water heater, Insulator, Intangible drilling and development costs (IDC), Integral collector storage (ICS), Integrated demand, Integrated gasification-combined cycle technology, Interchange energy, Interconnected system, Intergovernmental Panel on Climate Change (IPCC), Intermediate grade gasoline, Intermediate load (electric system), Intermittent electric generator or intermittent resource, Internal combustion plant, International bunker fuels, Interruptible gas, Interruptible power, Interstate pipeline, Interstate pipeline purchase, Intrastate pipeline, In-use (vehicles), Ion exchange, Iron and steel industry, Irradiated nuclear fuel, Isobutane (C4H10), Isobutylene (C4H8), Isohexane (C6H14), Isomerization, Isopach, Isopentane, Isotopes

J - Jet fuel, Joule (J), Joule's Law

K - Kaplan turbine, Kerosene, Kerosene-type jet fuel – for commercial aircraft & military aircraft, Ketone-alcohol (cyclohexanol), Kilovolt-Ampere (kVa), Kilowatt (kW), Kilowatt-electric (kWe), Kilowatthour (kWh), Kinetic energy, Kyoto Protocol, Lamp, Energy installation

L - Landfill gas, Large passenger car, Large pickup truck, Leachate, Lead acid battery, Leaded gasoline, Leaded premium gasoline, Leaded regular gasoline, Leading edge, Lease and plant fuel, Lease fuel, Light bulbs, Light-duty vehicles, Light gas oils, Light oil, Light rail, Light trucks, Light water, Light water reactor (LWR), Lighting conservation feature, Lighting equipment, Lights, Lignite, LIHEAP (Low-Income Home Energy Assistance Program), Line-miles of seismic exploration, LNG, Liquefied natural gas (LNG), Liquefied petroleum gases, Liquefied refinery gases (LRG), Liquid collector, Liquid metal fast breeder reactor, Load (electric), Load control program, Load curve, Load diversity, Load factor, Load following, Load leveling, Load management technique, Load shape, Load shedding, Local distribution company (LDC), Long ton, Longwall mining, Loop flow, Low Btu gas, Low E glass, Low flush toilet, Low flow showerheads, Low head, Low power testing, Low-pressure sodium lamp, Low temperature collectors, Low volatile bituminous coal, Lubricants, Lumen, Lumens/Watt (lpw)

M - Machine drive (motors), Magma, Main heating equipment, Main heating fuel, Mains, Major electric utility, Major energy sources, Major fuels, Major interstate pipeline company, Make-up air, Manhattan Project, Manual dimmer switches, Manufactured gas, Marketable coke, Masonry, Masonry stove, Mass burn facility, Master-metering, Mcf, Mean indoor temperature, Median streamflow, Median water condition, Medium-temperature collector, Medium-volatile bituminous coal, Megavoltamperes (MVA):  Millions of voltamperes, Megawatt (MW): One million watts of electricity, Megawatt electric (MWe): One million watts of electric capacity, Megawatthour (MWh), Mercaptan, Mercury vapor lamp, Met, Meta-anthracite, Metal halide lamp, Metallic, Metallurgical coal, Methane, Methanogens, Methanol (CH3OH), Methanol blend, Methanotrophs, Methyl chloroform (trichloroethane), Methylene chloride, Metric conversion factors (for floorspace), Metric ton, Microcrystalline wax, Microgroove, Micrometer (or Micron), Microwave oven, Midgrade gasoline, Mid-size passenger car, Middle distillates, Middlings, Miles per gallon (MPG), Military use, Mill feed, Milling, Milling capacity, Milling of uranium, Million British Thermal Units, Minable, Mine capital, Mine count, Mineral-matter-free basis, Mining, Mini van, Minimum streamflow, Miscellaneous petroleum products, Mixed waste, MMbbl/d, MMBtu, MMcf, MMgal/d, MMst, Mobile home, Moist (coal) basis, Mole, Montreal Protocol, Motor gasoline blending, Motor gasoline blending components, Motor gasoline (finished), Motor speed, MPG, MPG shortfall, MSHA ID number, MTBE (methyl tertiary butyl ether) (CH3)3COCH3, Multiple completion well, Multiple cropping, Multiple purpose reservoir, Municipal solid waste, Municipal waste, Municipal waste to energy project or plant

N - Naphtha, Naphtha-type jet fuel, Native gas, Natural gas, Dry natural gas, Natural gas liquids (NGL), Natural gas plant liquids, Natural gas processing plant, Natural gas production, Natural gas utility demand-side management (DSM) program sponsor, Natural gasoline, Natural Gasoline and Isopentane, Natural streamflow, Natural uranium, NERC, Net energy for load, Net energy for system, Net photovoltaic module shipment, New field discoveries, New reservoir, Nitrogen dioxide, Nitrogen oxides (NOx), Nitrous oxide (N2O), No. 1 diesel fuel, No. 1 distillate, No. 1 fuel oil, No. 2 distillate, No. 2 fuel oil (heating oil), No. 2 fuel oil and No. 2 diesel, No. 2 fuel oil, No. 4 fuel oil, No. 5 and no. 6 fuel, No. 5 and no. 6 fuel oil, NOAA, Noload loss, Nonassociated natural gas, Nonconventional plant (uranium), Nonfuel use (of energy), Nonfungible product, Nonhydrocarbon gases, Nonmethane volatile organic compounds (NMVOC), Nonrenewable fuels, Nonroad alternative fuel vehicle (nonroad AFV), Normal butane, North American Electric Reliability Council (NERC), Nuclear electric power (nuclear power), Nuclear fuel, Nuclear reactor

O - Ocean energy systems, Ocean thermal energy conversion (OTEC), Octane, Octane rating, OEM, Off peak, Off peak gas, Offshore, Offshore reserves and production, Offsite-produced energy for heat, power, and electricity generation, Offsystem (natural gas), Ohm, Ohm's Law, Oil reservoir, Oil shale, Oil well, Oil well (casinghead) gas, On-highway use (diesel), On peak, On-system, On-system sales, One sun, OPEC (Organization of the Petroleum Exporting Countries), Open access, Open market coal, Open refrigeration unit, Operable capacity, Operable generators/units, Organic content, Organic waste, Organization for Economic Cooperation and Development (OECD), oxygenates, Outage, Outer Continental Shelf, Oven, Owned reserves, Oxidize, Oxygenated gasoline, Oxygenated gasoline (includes Gasohol), Oxygenates, Ozone, Ozone precursors

P - Packaged air conditioning units, Parabolic dish, Parabolic trough, Paraffin (oil), Paraffin (wax), Paraffinic hydrocarbons, Particulate, Passive solar heating, Peak day withdrawal, Peak demand, Peak kilowatt, Peak load, Peaking capacity, Peat, Pentanes plus, Perfluorocarbons (PFCs), Perfluoromethane, Permanently discharged fuel, Permeability, Persian Gulf, Petrochemical feedstocks, Petrochemicals, Petroleum, Petroleum coke, Petroleum coke, catalyst, Petroleum coke, marketable, Petroleum consumption, Petroleum imports, Petroleum jelly, Petroleum products, Petroleum refinery, Petroleum stocks, pH, Photosynthesis, Photovoltaic and solar thermal energy (as used at electric utilities), Photovoltaic cell (PVC), Photovoltaic cell net shipments, Photovoltaic module, Pig iron, Pipeline, distribution, Pipeline freight, Pipeline fuel, Pipeline, gathering, Pipeline (natural gas), Pipeline (petroleum), Pipeline purchases, Pipeline quality natural gas, Pipeline, transmission, Pipelines, rate regulated, Pitcheblende, Planetary albedo, Planned generator, Plant condensate, Plant liquids, Plant or gas processing plant, Plant products, Plant-use electricity, Plugged-back footage, Plutonium (Pu), Pneumatic device, Pole-mile, Pole/Tower type, Polystyrene, Polyvinyl chloride (PVC), Pondage, Pool, Pool site, Population-weighted degree-days, Pore space, Portable electric heater, Portable fan, Portable kerosene heater, Post-mining emissions, Potential peak reduction, Pounds (district heat), Power, Power (electrical), Power ascension, Power exchange, Power exchange generation, Power exchange load, Power factor, Power loss, Power pool, Power production plant, Power transfer limit, Powerhouse, Prediscovery costs, Premium gasoline, Preparation plant, Preproduction costs, Pressurized-water reactor (PWR), Preventive maintenance program for heating and/or cooling equipment, Price, Primary coal, Primary energy, Primary energy consumption, Primary energy consumption expenditures, Primary fuels, Primary recovery, Primary transportation, Private fueling facility, Privately owned electric utility, Probable energy reserves, Probable (indicated) reserves, coal, Process cooling and refrigeration, Process fuel, Process heating or cooling demand-side management (DSM) program, Process heating or cooling waste heat recovery, Processed gas, Processing gain, Processing loss, Processing of uranium, Processing plant, Producer, Producer and distributor coal stocks, Production capacity, Production costs, Production, crude oil, Production expenses, Production, lease condensate, Production, natural gas, Production, natural gas, dry, Production, natural gas liquids, Production, natural gas, wet after lease separation, Production, oil and gas, Production payments, Production plant liquids, Production, wet after lease separation, Propane (C3H8), Propane air, Propane, consumer grade, Propylene (C3H6), Prospecting, Prospecting costs, Proved energy reserves, Proved (measured) reserves, coal, Public street and highway lighting, Public utility, Pulp chips, Pulp wood, Pulping liquor (black liquor), Pumped-storage hydroelectric plant, Purchase-contract imports of uranium, Pure pumped-storage hydroelectric plant, PURPA, Pyrolysis

Q - Quad, Quadrillion, Qualifying facility (QF), Quality or grade (of coal)

R - R-value, Radiant barrier, Radiant ceiling panels, Radiant energy, Radiation, Radiative forcing, Radiatively active gases, Radiator, Radioactive waste, Radioactivity, Radioisotope, Radon, Rail (method of transportation to consumers), Railroad and railway electric service, Railroad locomotive, Railroad use, Range top, Rankine cycle, Rankine cycle engine, Rate base, Rate case, Rate schedule (electric), Rates, Rating, Ratio estimate, Ratoon crop, Rayleigh frequency distribution, Reactance, Reactive power, Real Power, Real price, Reasonably assured resources (RAR), Reburn, Recoverability, Recoverable coal, Recoverable proved reserves, Recoverable reserves, Recoverable reserves, estimated recoverable reserves (coal), Recovery factor (coal), Recovery percentage (coal), RECS, Rectifier, Recycled feeds, Recycling, Redox potential, Redrill footage, Reduced use-off hours, Reference month, Reference year, Refined petroleum products, Refiner, Refiner acquisition cost of crude oil, Refinery, Refinery capacity utilization, Refinery fuel, Refinery gas, Refinery input, crude oil, Refinery input, total, Refinery losses and gains, Refinery output, Refinery production, Refinery utilization rate, Refinery yield, Reflective film, Reflectivity, Reforestation, Reformulated gasoline, Refrigeration unit, Refunding, Refuse bank, Refuse-derived fuel (RDF), Refuse mine, Refuse recovery, Regional reserves, regional reserve estimates (coal), Regional Transmission Group, Regular grade gasoline, Regulated streamflow, Regulation, Regulation, procedures, and practices, Reheating coils, Reinjected, Reinserted fuel, Reinsertion, Reliability (electric system), Relocation of tailings, Remaining (resources/reserves) (coal), Renewable energy resources, Replacement energy source for primary heating, Replacement vehicle, Reporting, Repowering, Repressuring, Reprocessing, Requirements power, Reregulation, Resale (wholesale) sales, Research and development (R&D), Reseller, Reserve, Reserve additions, Reserve generating capacity, Reserve margin (operating), Reserve revisions, Reserves, coal, reserves, coal, Reserves, energy, Reservoir, Reservoir capacity, Reservoir repressuring, Residual fuel oil, Residue gas, Residuum, Resources (Coal), Retail motor gasoline prices, Retail wheeling, Retailer, Retired hydropower plant sites, Reversible turbine, Ribbon silicon, Rip rap, Road oil, Roof (coal), Roof insulation, Roof or ceiling insulation, insulation in exterior walls, Roof pond, Room air conditioner, Room heater burning gas, oil, and kerosene, Room-and-pillar mining, Rotary rig, Roundwood, Run-of-mine coal, Run-of-river hydroelectric plant, Rural Electrification

S - Salt dome, Salt gradient solar ponds, Scoop loading, Seam, Seasonal pricing, Seasoned wood, Secondary heating equipment, Secondary heating fuel, Selective absorber, Self-Generator, Semianthracite, Semiconductor, Septic tank, Series connection, Series resistance, Service well, Shaft mine, Shakes/shingles, Shallow pitting, Shell storage capacity, Short circuit, Short circuit current, Shortwall mining, Sidetrack drilling, Silicon, Silt, Silt, culm, refuse bank, or slurry dam mining, Single-circuit line, Single crystal silicon, Single crystal silicon (Czochralsky), Site characterization, Sinter, Slope mine, Slot, Sludge, Slurry, Slurry dam, Small pickup truck, Small power producer (SPP), Sodium lights, Sodium silicate, Sodium tripolyphosphate, Solar cell, Solar constant, Solar cooling, Solar declination, Solar dish, Solar energy, Solar pond, Solar power tower, Solar radiation, Solar spectrum, Solar thermal collector, Solar thermal collector, Solar thermal panels, Solar thermal parabolic dishes, Solar trough, Space heating, Special naphthas, Special nuclear material, Specular reflectors, Speculative resources (coal), Speculative resources (uranium), Spent fuel, Spent fuel disassembly hardware, Spent liquor, Spillway, Spinning reserve, Split system, Split tails, Spontaneous combustion, or self-heating, of coal, Spot market (natural gas), Spot market (uranium), Stabilization lagoon, Stack, Stand-alone generator, Standard fluorescent, Standby charge, Standby electricity generation, Startup/flame stabilization fuel, Station (electric), Steam boiler, Steam coal, Steam electric power plant (conventional), Steam for heating/cooling, Steam or hot water radiators or baseboards, Steam or hot-water system, Steam turbine, Still gas (refinery gas), Storage field capacity (underground gas storage), Storage hydroelectric plant, Storage site, Storm door, Storm or multiple glazing, Storm window, Strategic Petroleum Reserve (SPR), Stratigraphic test well, Stratosphere, Stream-flow, Strip mine, Strip mining (surface), Strip or stripping ratio, Stripper well, Styrene, Subbituminous coal, Subcompact/compact passenger car, Sulfur, Sulfur dioxide (SO2), Sulfur hexafluoride (SF6), Sulfur oxides (SOx), Summer and winter peaking, Superconductivity, Supplemental gas, Supplemental gaseous fuels supplies, Surface drilling expenses (uranium), Surface mine, Surface mining equipment, Surface mining methods, Surface rights, Surplus energy, Swamp coolers (evaporative coolers), Switching station, Synthetic natural gas (SNG)

T - Tailgate, Tailings, Tall oil, Tank farm, Tanker and barge, Tar sands, Temperature coefficient (of a solar photovoltaic cell), Temporarily discharged fuel, Terawatthour, Tertiary amyl methyl ether, Tertiary butyl alcohol, Test well contribution, Therm, Thermal, Thermal cracking, Thermal efficiency, Thermal energy storage, Thermal limit, Thermal resistance (R-Value), Thermal storage, Thermocouple, Thermodynamics, Thermophotovoltaic cell, Thermosiphon system, Thermostat, Thorium, Three-phase power, Tidewater piers and coastal ports, Tie line, Tinted or reflective glass or shading films, Tipple, Toluene (C6H5CH3), Ton mile, Transformer, Transmission and distribution loss, Transmission (electric) (verb), Transmission circuit, Transmission line, Transmission network, Transmission system (electric), Transmission type (engine), Transport, Transportation energy expenditures, Transportation sector, Transported gas, Transporter, Transshipment, Treating plant, Trillion Btu, Troposphere, Trough, Trunk line, Turbine

U - Ultraviolet, Unconventional oil and natural gas production, Underground gas storage, Underground mine, Underground mining equipment, Underground mining methods, Underground storage, Undiscovered resources (coal), Unfinished oils, Unfractionated streams, Unglazed solar collector, Unleaded gasoline, Unleaded midgrade gasoline, Unleaded premium gasoline, Unleaded regular gasoline, Unprocessed gas, Uranium (U), Uranium concentrate, Uranium deposit, Uranium endowment, Uranium hexaflouride (UF6), Uranium importation, Uranium mill, Uranium ore, Uranium oxide, Uranium property, Uranium reserves, Usage agreement, Utility distribution companies, Utility generation

V - Vacuum distillation, Vapor-dominated geothermal system, Variable fuel vehicle, Variable-speed wind turbines, Vehicle fuel consumption, Vehicle fuel efficiencies, Vehicle miles traveled (VMT), Vented natural gas, Vented/Flared, Ventilation system, Vertical-axis wind turbine (VAWT), Vertical integration, Vessel, Virgin coal, Visbreaking, Volatile matter, Volatile organic compounds (VOCs), Volatile solids, Volt (V), Voltage

W – Walk-in refrigeration units, Wall insulation, Warm-air furnace, Waste coal, Waste energy, Waste heat boiler, Waste heat recovery, Waste materials, Waste oils and tar, Wastewater, Water bed heater, Water heated in furnace, Water heater, Water heating DSM programs, Water heating equipment, Water pollution abatement equipment, Water pumping, Water reservoir, Water source heat pump, Water turbine, Water vapor, Water well, Water wheel, Waterway, Watt (W), Watthour (Wh), Wattmeter, Wax, Weather stripping or caulking, Weir, Well, Well water for cooling, Wellhead, Wellhead price, Wet bottom boiler, Wet natural gas, White spirit, Wholesale electric power market, Wholesale wheeling, Wind energy, Wind energy conversion system (WECS) or device, Wind farm, Wind power plant, Wind turbine, Wood and waste (as used at electric utilities), Wood conversion to Btu, Wood energy, Wood pellets, Working (top storage) gas

X - Xylene (C6H4(CH3)2)

Y - Yellowcake

Until here