In general, this refers to substituting one type of fuel for another, such as switching from coal to natural gas. With regard to climate change, it is implicit that the substituted fuel generates lower carbon emissions per unit energy than the original fuel.
- Additionality
- Afforestation
- Alternative Energy
- Anthropogenic
- Atmosphere
- Atmospheric Lifetime
- Biofuels
- Biomass
- Biosphere
- Cap and Trade
- Carbon
- Carbon Capture and Sequestration
- Carbon Credit
- Carbon Cycle
- Carbon Dioxide (CO2)
- Carbon Dioxide Equivalent
- Carbon Finance
- Carbon Footprint
- Carbon Offset
- Carbon Trading
- Certified Emissions Reductions (CERs)
- Chlorofluorocarbons (CFCs)
- Climate
- Climate Change
- Co-Benefit
- CO2e
- Coal Mine Methane
- Coalbed Methane
- Deforestation
- Desertification
- Dryland Farming
- Ecosystem
- Emissions
- Emissions Factor
- Emissions Reduction Purchase Agreement (ERPA)
- Emissions Trading
- Enhanced Greenhouse Effect
- Enteric Fermentation
- Fluorinated Gases
- Fluorocarbons
- Fossil Fuel
- Fuel Switching
- Global Warming
- Global Warming Potential (GWP)
- Greenhouse Effect
- Greenhouse Gas (GHG)
- Halocarbons
- Hydrocarbons
- Hydrochlorofluorocarbons (HCFCs)
- Hydrofluorocarbons (HFCs)
- Indirect Emissions
- Kyoto Protocol
- Listed
- Methane (CH4)
- Metric Ton (Tonne)
- Natural Gas
- Nitrogen Oxides (NOx)
- Nitrous Oxide (N2O)
- Offsets/Offsetting
- Ozone
- Ozone Depleting Substances (ODSs)
- Ozone Layer
- Ozone Precursors
- Particulate Matter (PM)
- Perfluorocarbons (PFCs)
- Project Developer
- Project Protocol/Methodology
- Reduction
- Reforestation
- Registered
- Renewable Energy
- Retired
- Soil Carbon
- Stratosphere
- Sulfur Hexafluoride (SF6)
- Trader/Broker/Retailer
- Troposphere
- Verification Body
- Verifier
- Vintage
- Voluntary Emissions Reduction (VER)