An ACCU is a unit issued to a person by the Clean Energy Regulator (Regulator) by making an entry for the unit in an account kept by the person in the electronic [Australian National Registry of Emissions Units] registry.
Each ACCU issued represents one tonne of carbon dioxide equivalent (tCO2-e) stored or avoided by a project. An ACCU can only be issued to a person if the person has a Registry account.