A
- Account Classification
- Account of Others (Natural Gas)
- Accounting System
- Acid Mine Drainage (AMD)
- Acid Rain
- Acquisition (Foreign Crude Oil)
- Acquisition (Minerals)
- Acquisition Costs, Mineral Rights
- Acre-Foot
- Acreage in Oil and Gas Investments
- Active Power
- Active Solar
- Actual Peak Reduction
- Adequacy (Electric)
- Adjustable Speed Drives (ASDs)
- Adjusted Electricity
- Adjustment Bid
- Administrative and General Expenses (A&G Expenses)
- Advance Royalty
- Advanced Fuel Ethanol
B
- Backup Fuel
- Backup Generator
- Backup Power
- Balancing Authority (Electric)
- Balancing Item
- Barrel
- Barrel (b)
- Barrel of Oil Equivalent (BOE)
- Barrels Per Calendar Day (BPCD)
- Barrels Per Day (b/d)
- Barrels per Stream Day (b/sd)
- Barrels per Stream Day (BPSD)
- Base Bill
- Base Gas
- Base Load
- Base Load Capacity
- Base Load Plant
- Base Period
- Base Rate
- Baseboard Heater
C
- Calcination
- Calcium Sulfate
- Calcium Sulfite (CaSO3)
- California Air Resources Board (CARB)
- Canadian Deuterium Uranium Reactor (CANDU)
- Cannel Coal
- Canola Oil
- Capable of Being Fueled
- Capacity
- Capacity (Purchased)
- Capacity Charge
- Capacity Factor
- Capacity Factor (CF)
- Capacity Transaction
- Capacity Utilization
- Capital Cost
- Capital Stock
- Captive Coal
- Captive Refinery MTBE Plants
- Captive Refinery Oxygenate Plants
D
- Dam
- Day-Ahead and Hour-Ahead Markets
- Day-ahead Schedule
- Daylighting Controls
- Deadweight Tons (DWT)
- Dealer Tank Wagon (DTW)
- Dealer Tank Wagon (DTW) Sales
- Decatherm
- Decommissioning
- Decontamination
- Dedicated Energy Crops
- Dedicated Reserves
- Dedicated Vehicle
- Deepest Total Depth
- Deferred Cost
- Deferred Fuel Costs
- Deferred Fuel Costs (DFC)
- Deferred Income Tax (Liability)
- Deforestation
- Degasification System
E
- E85 (Flex Fuel)
- E95 (Ethanol Fuel Blend)
- Economy of Scale
- Effective Full-Power Days (EFPD)
- Electric Baseboard Heating
- Electric Current
- Electric Deliveries
- Electric Energy
- Electric Expenses
- Electric Generation
- Electric Generator
- Electric Industry Reregulation
- Electric Industry Restructuring
- Electric Non-Utility
- Electric Operating Expenses
- Electric Plant (Physical)
- Electric Plant Acquisition Adjustment
- Electric Power
- Electric Power Grid
- Electric Power Industry
F
- f.o.b. Price (Free On Board)
- f.o.b. Value (Coal)
- Fabricated Fuel
- Facilities Charge
- Facility
- Fahrenheit (°F)
- Failure Modes and Effects (FME)
- Failure or Hazard
- Farm Use
- Farm-Out (In) Arrangement
- Fast Breeder Reactor (FBR)
- Federal Coal Lease
- Federal Electric Utility
- Federal Energy Regulatory Commission (FERC)
- Federal Power Act (FPA)
- Federal Power Commission (FPC)
- Federal Region
- Fee Interest
- Feeder Line
- FERC Guidelines
G
- Gallon
- Gallon (gal)
- Gas
- Gas Condensate Well Gas
- Gas Cooled Fast Breeder Reactor (GCFB)
- Gas Formation Volume Factor (Bg)
- Gas Plant Operator
- Gas Processing Unit
- Gas to Liquids (GTL)
- Gas Turbine Plant
- Gas Well
- Gas Well Productivity
- Gasification
- Gasohol
- Gasoil
- Gasoline
- Gasoline Blending Components
- Gasoline Grades
- Gasoline Motor (Leaded)
- Gasoline Treated as Blendstock (GTAB)
H
- Half-life
- Halogen Lamp
- Halogenated Substances
- Hand Loading
- Haulage Cost
- Head
- Heap Leach Solutions
- 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
- Heating Value (Natural Gas)
I
- Identified Resources
- Idle Capacity
- Impedance (Z)
- Implicit Price Deflator
- Implied Heat Rate
- Imported Crude Oil Burned as Fuel
- Imported Refiners' Acquisition Cost (IRAC)
- Imports
- Improved Recovery
- In Situ Leach Mining (ISL)
- In-house Demand-Side Management (DSM) Program Sponsor
- In-Use Vehicles
- Inadvertent Power Exchange
- Incandescent Lamp
- Incandescent Light Bulbs
- Incentives Demand-Side Management (DSM) Program Assistance
- Incremental Effects
- Incremental Energy Costs
- Independent Power Producer (IPP)
- Independent Power Producer (IPP)
J
K
L
- Lamp
- Land Use
- Land-use Restrictions
- Landed Cost (Crude Oil)
- Landfill Gas
- Langley (Langley)
- Large Passenger Car
- Large Pickup Truck
- Large-Scale Solar
- Latitude and Longitude
- Leachate
- Lead Acid Battery
- Leaded Gasoline
- Leaded Premium Gasoline
- Leaded Regular Gasoline
- Leading Edge
- Lease and Plant Fuel
- Lease Condensate
- Lease Equipment
- Lease Fuel
M
- M (Thousand Units)
- Machine Drive (Motors)
- Made Available (Vehicle)
- Magma
- Main Heating Equipment
- Main Heating Fuel
- Mains
- Maintenance Expenses
- Maintenance of Boiler Plant (Expenses)
- Maintenance of Structures (Expenses)
- Maintenance Supervision and Engineering Expenses
- Major Electric Utility
- Major Energy Sources
- Major Fuels
- Major Interstate Pipeline Company
- Make-up Air
- Manhattan Project
- Manual Dimmer Switches
- Manufactured Gas
- Manufacturing Division
N
- Name Plate
- Nameplate Capacity
- Naphtha
- Naphtha Less Than 401 Degrees Fahrenheit
- Naphtha-Type Jet Fuel
- Naphthas
- National Ambient Air Quality Standards (NAAQS)
- National Association of Regulatory Utility Commissioners (NARUC)
- National Association of Regulatory Utility Commissioners (NARUC)
- National Defense Authorization Act (NDAA)
- National Oceanic and Atmospheric Administration (NOAA)
- National Priorities List (NPL)
- National Rural Electric Cooperative Association (NRECA)
- National Rural Electric Cooperative Association (NRECA)
- National Uranium Resource Evaluation (NURE)
- National Uranium Resource Evaluation (NURE)
- Native Gas
- Native Load (Electric)
- Natural Gas
- Natural Gas Field Facility
O
- Occupancy Sensors
- Ocean Energy Systems
- Ocean Thermal Energy Conversion (OTEC)
- Ocean Thermal Energy Conversion (OTEC)
- Octane
- Octane Rating
- Off Peak
- Off-highway Use
- Off-Hours Equipment Reduction
- Off-Peak Gas
- Off-site Produced Energy for Heat, Power, and Electricity Generation
- Off-system
- Offshore Oil and Gas Operations
- Offshore Reserves and Production
- Offsystem (Natural Gas)
- Ohm (Ω)
- Ohm's Law
- Oil
- Oil Company Use
- Oil Formation Volume Factor (FVF)
P
- Packaged Air Conditioning Units (PACUs)
- Packaged Units
- Parabolic Dish
- Parabolic Trough
- Paraffin (Oil)
- Paraffin (Wax)
- Paraffinic Hydrocarbons
- Parent and its Consolidated Entities
- Parent Company
- Parent Well
- Partial Requirements Consumer
- Particulate
- Parting
- Passenger-Miles Traveled (PMT)
- Passive Solar Heating
- Payables to Municipality
- Payment Method for Utilities
- Peak Capacity of an LNG Export Facility
- Peak Day Withdrawal
- Peak Demand
Q
R
S
- Salable Coal
- Salable Natural Gas
- Sales
- Sales for Resale
- Sales for Resale (Electric)
- Sales to End Users
- Sales Type
- Sales Volume (Coal)
- Salt Gradient Solar Ponds
- Sample (Coal)
- Schedule
- Scheduled Outage
- Scheduling Coordinators
- Scoop Loading
- Screenings
- Seam
- Seasonal Energy Efficiency Ratio (SEER)
- Seasonal Energy Efficiency Ratio (SEER)
- Seasonal Pricing
- Seasonal Rates
T
- Tailgate Safety Meeting
- Tailings
- Tall Oil
- Tallow
- Tangible Development Costs
- Tank Farm
- Tanker and Barge
- Tar Sands
- Tariff
- Tax-Cost
- Telemetering (Electric)
- Temperature (T)
- Temperature Coefficient (of a Solar Photovoltaic Cell)
- Temporarily Discharged Fuel
- Tennessee Valley Authority (TVA)
- Tennessee Valley Authority (TVA)
- Terawatt-hour (TWh)
- Terawatthour (TWh)
- Term Agreement
- Terminal Location
U
- U.S. Department of Energy (DOE)
- U.S. Energy Information Administration (EIA)
- U.S. Refiner Acquisition Cost of Imported Crude Oil
- Ultimate Customer
- Ultra Large Crude Carrier (ULCC)
- Ultra-low Sulfur Diesel (ULSD) Fuel
- Ultraviolet (UV)
- Unaccounted for (crude oil)
- Unaccounted for Natural Gas
- Unbundling
- Uncompleted Wells, Equipment, and Facilities Costs
- Unconsolidated Entity
- Unconventional Oil and Natural Gas Production
- Underground Mine
- Underground Mining Equipment
- Underground Mining Methods
- Underground Natural Gas Storage
- Underground Natural Gas Storage Injections
- Underground Storage
- Underground Storage Withdrawals
V
- Vacuum Distillation
- Value Added by Manufacture
- Value of Shipments
- Vapor Displacement
- Vapor Retarder
- Vapor-Dominated Geothermal System
- Variable Air Volume (VAV) System
- Variable Fuel Vehicle (VFV)
- Variable-Speed Wind Turbines
- Vehicle Fuel Consumption
- Vehicle Fuel Efficiencies
- Vehicle Fuel Expenditures
- Vehicle Identification Number (VIN)
- Vehicle Identification Number (VIN)
- Vehicle Importer
- Vehicle Miles Traveled (VMT)
- Vehicle Miles Traveled (VMT)
- Vented and Flared Gas
- Vented Emissions
- Vented Natural Gas
W
- Wafer (Semiconductor Wafer)
- Walk-in Refrigeration Units
- Wall Insulation
- Warm-air Furnace
- Warranty Contracts
- Waste Coal
- Waste Energy
- Waste Heat Boiler
- Waste Heat Recovery
- Waste Management in Energy Industry
- Waste Materials
- Waste Oils and Tar
- Wastewater, Domestic and Commercial
- Wastewater, Industrial
- Water Bed Heater
- Water Conditions
- Water Heated in Furnace
- Water Heater
- Water Heating Demand-Side Management Programs (DSM)
- Water Heating Equipment