The carbon footprint of an organisation is the amount of carbon dioxide generated as a result of the activities for which an organisation is directly responsible, specifically energy use and travel. It is measures in tonnes of CO2.
These can be offset by
(a) the amount of renewable energy that is used,
(b) the amount of their carbon footprint which the organisation chooses to offset through various schemes such those operated by Climate Stewards and
(c) the amount that is offset through carbon sequestration schemes such as tree planting, The difference between the carbon footprint and the offset amount is known as net carbon.
This leaflet offers advice on how to achieve this.