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This file contains the codes used for all of the carbon and sustainability data fields in the Renewable Transport Fuel Obligation (RTFO) operating system (ROS) and the biofuels carbon calculator.

Suppliers should use these codes to upload their administrative consignment data by a comma-separated values (CSV) file to ROS or to the carbon calculator.

Please contact the RTFO Administrator if a code is not available for data you wish to report. For example, for a feedstock or country.

Contact us聽

Send queries about the RTFO聽codes to the Department for Transport鈥檚聽Low Carbon Fuels聽Delivery Unit at聽[email protected].