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In accordance with article L 1431-3 of the Transport Code, Île-de-France Mobilités, SNCF Transilien and RATP make available to passengers information on the greenhouse gas (GHG) emissions emitted during their journeys. emitted during their journeys.
This information is based on indicators that are updated annually
in accordance with current regulations (decree no.
Information on greenhouse gases is available in particular
in particular on the following websites:
Emission factors used for calculation
The emission factors used ADEME's Base Carbone, according to the values in force on the date the of the indicators. More information on the site: www.bilans-ges.ademe.fr
For calculations made in
2020 (base year 2019), the emission factors are presented below.
below. They include emissions
emissions (direct) and upstream emissions (indirect) for each mode of
38.6 gCO2e per kWh
3.17 kgCO2e per liter
3.16 kgCO2e per liter
0.5559 kgCO2e per m3
(average power and motorization)
0.177 kgCO2e per passenger-kilometer
Calculation of GHG indicators for different modes of
The indicators are calculated below for 2019. For
modes operated by different transport operators, an average emission factor is
is calculated from the average emissions of each network, weighted by its passenger-kilometers.
by its passenger-kilometres. This is the case for RER and trains, as well as for buses.