A certificate which allows a country or business to produce a certain amount of carbon emissions and which can be traded if the full allowance is not used.
The state of making no net release of carbon dioxide to the atmosphere, achieved through offsetting emissions, typically by planting trees.
The value applied to each unit or carbon emissions.
A government tax aimed at reducing gas emissions and encouraging greater energy efficiency across businesses or non-domestic organisations.
Fuels such as oil, gas and coal which are formed in the earth from plant and animal remains. Typically burnt to release the energy which also produced greenhouse gas emissions.
Energy produced from sources that do not run out and are naturally replenished such as the sun, wind, and water.
The amount of carbon emissions that exceed sustainable carbon sinks. A carbon debt could be assigned to any entity to which carbon emissions can be attributed, such as an individual, a firm, a group, a country, or an industry. Attribution of emissions and estimation of sustainable carbon sinks are complications to calculating this metric.
The process of compensating for carbon dioxide emissions arising from human activity, by removing the equivalent amount of carbon dioxide from the atmosphere, typically through carbon credits or offsetting projects.
An approach to limiting emissions of carbon dioxide, a major contributor to human-induced climate change, by establishing a tax on goods and services that is commensurate with the amount of CO2 released in their creation and delivery.
The practice of using less energy to provide the same amount of useful output.
A target of completely negating the amount of greenhouse gases produced by human activity to net-zero levels. Achieved by reducing emissions and increasing absorbing carbon dioxide from the atmosphere.
Electricity generated by sustainable sources. For example, solar panels, wind, geothermal, biomass, wave, or tidal power.