What is carbon offsetting? Carbon offsetting allows organisations and individuals to balance out their carbon footprints by funding emission reductions elsewhere which can 'offset' their own activities. For example, to offset the environmental impact of a flight, you could work out the emissions associated with that journey and purchase a carbon offset which guaranteed an equal emissions reduction elsewhere. Offsets include investments in renewable energy or tree planting and often take place in developing countries where the money invested by provides benefits in the local community. Find out more.