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
- Lease Operations
- Lease Separation Facility
- Lease Separator
- Leasehold Reserves
- Lessee
- Levelized Cost (LCOE)
- Leverage Ratio
- Liability
- Licensed Site Capacity
- Licensees
- Life Extension
- Lift
- Lifting Costs
- Light Bulbs
- Light Gas Oils
- Light Rail
- Light Trucks
- Light Water
- Light Water Reactor (LWR)
- Light Water Reactor (LWR)
- Light-Duty Vehicles (LDVs)
- Lighting Conservation Feature
- Lighting Demand-Side Management (DSM) Program
- Lighting Equipment
- Lights
- Lignite
- Line Loss
- Line-Miles of Seismic Exploration
- Liquefied Natural Gas (LNG)
- Liquefied Natural Gas (LNG)
- Liquefied Petroleum Gas (LPG)
- Liquefied Petroleum Gases (LPG)
- Liquefied Refinery Gases (LRG)
- Liquefied Rich Gas (LRG)
- Liquid Collector
- Liquid Fuels
- Liquid Metal Fast Breeder Reactor (LMFBR)
- LNG Feedgas
- LNG Send-Out
- Load (Electric)
- Load Control Program
- Load Curve
- Load Diversity
- Load Factor
- Load Following
- Load Leveling
- Load Loss (3 Hours)
- Load Management Technique
- Load on Equipment
- Load Reduction Request
- Load Shape
- Load Shedding
- Load-serving Entity (LSE)
- Local Distribution Company (LDC)
- Local Distribution Company (LDC)
- Locational Marginal Price (LMP)
- Long Ton
- Long-term Debt
- Long-term Purchase Agreements
- Longwall Mining
- Loop Flow
- Loss of Service (15 Minutes)
- Low Btu Gas
- Low Emission Vehicle Program (LEVP)
- Low Emissivity Glass (Low E Glass)
- Low Flow Showerheads
- Low Flush Toilet
- Low Head Hydroelectric Power
- Low Income Home Energy Assistance Program (LIHEAP)
- Low Income Home Energy Assistance Program (LIHEAP)
- Low Power Testing
- Low Sulfur Diesel (LSD) Fuel
- Low Temperature Collectors (LTC)
- Low Volatile Bituminous Coal
- Low-pressure Sodium Lamp
- Lower 48 States
- Lower Heating Value (LHV)
- Lower Heating Value (LHV)
- Lubricants
- Lumen
- Lumens per Watt (LPW)