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French CO2 Info

Since 1 October 2013, French CO2 Info (Grenelle Environnement) require airlines, travel agents and freight forwarders operating or selling transport services (passengers or goods) on flights to, from and within France to inform their passengers of the quantity of CO2 emitted.


The purpose of providing CO2 information for transport services is to raise the awareness of all users of transport services of their contributions to greenhouse gas (GHG) emissions, and to help them better direct their choices, if possible, towards less-emitting options.


French CO2 Info concerns airlines or companies organising or selling transport services by air such as travel agents and freight forwarders. All flights to, from or between French airports are included.

The French CO2 Info requirement applies to all airlines regardless of size (no exemption threshold) although there is a simplified methodology for companies with fewer than 50 employees.

Calculation methodology

There are four different calculation methods: 
  • Level 1 values: default values (CO2 emissions calculator)
  • Level 2 values: average figures calculated for all the activities
  • Level 3 values: mean values calculated for each sub-group of activities
  • Level 4 values: real data
Level 1 values

This method consists in using the CO2 aviation emissions calculator provided by the DGAC. The calculator allows to estimate the quantity of CO2 emitted on any flight departing from or arriving in any airport located in France. 

Level 2 values

Level 2 values correspond to average figures calculated by the airline for all of its flights. The calculation principles are identical to the Level 1 values methodology but the values used are calculated by the airline using its own average fuel consumption figures and load factors. These mean values correspond to all of its activities.

Level 3 values

Level 3 values correspond to mean values calculated by the service provider based on a complete breakdown of its activity (per organisational unit, type of route, customer, type of means of transport or any other appropriate breakdown).

For an airline these values are based on the average emissions per unit for specific subgroups (for example short/medium/long-haul, geographic areas of service, types of rotation (shuttles, regular lines, charters), etc.).

Level 4 values

The use of level 4 values involves the collection of information on the real operating conditions of the flight (fuel consumption, load factor, etc.) in order to produce CO2 information based on actual measured data. 

Disclosure requirements

CO2 information is expressed in kg or tonnes of CO2 for the transport service. This information can be communicated in the quotation or after completion of the service.

The beneficiary of this information may be one of two types: 
  1. this may be the person directly benefiting from the service, i.e. the passenger. In this case, the airline issuing the tickets or transport documents can display the CO2 values on these documents
  2. this may be an intermediary agent (travel agency, etc.), re-selling the service to a customer. In this case, the airline can provide this information within its booking system so that the travel agency provides this information to its clients. 
For more information, read our F.A.Q.

Source: French Ministry of Ecology, Sustainable Development and Energy