Committed to the environment!
We transport 12 million passengers daily in the Ile-de-France region. Our core business naturally fits within a sustainable development process: transporting a passenger by metro, RER or tram requires 5 times less energy than the same trip by car!

The RATP Group reaffirms its ambition to develop more sustainable cities in its Corporate Social Responsibility policy, whose second commitment is:

To reduce the group’s environmental footprint by limiting greenhouse gas emissions and energy consumption, further improving the energy efficiency of its transport systems and stations, and developing eco-design procedures.

Since 2006, RATP has been engaged in an ongoing process to improve the energy performance and carbon footprint of its transport network. Between 2004 and 2015, these actions have reduced energy consumption by 12% per passenger/kilometre. Induced CO2 emissions have declined by 13% over the same period.

01. Committed to the environment!

Bilan Carbone® (Carbon report)

The Grenelle 2 act (law n° 2010-788 of 12 July 2010, article 75) requires state-owned companies with more than 250 employees to conduct a carbon report. This mandatory report comprises greenhouse gas emissions induced by energy consumption.
We were pioneers in this field: we began conducting a comprehensive carbon assessment of our businesses as early as 2006. Thanks to this report, we are able to measure our carbon footprint and to identify and set priorities for actions aiming to reduce our emissions. 

Information on CO2 emissions

Bus2025, the bus fleet’s energy transition


LED lighting in stations

Reducing water consumption

Waste management

Energy consumption of our buildings

Environmental management

Circular economy

Key number

reduction in energy consumption and 50% reduction in greenhouse gas emissions per passenger/kilometre, compared to 2015: this is our goal for 2025!

02. Expert in sustainability mobility

For us, only the construction of a complete, door-to-door mobility service structured around a dense, high performance public transport network, and positioning itself as an alternative to the car, will allow for the creation of a sustainable mobility eco-system that meets your needs, and those of your community.


  • Through the implementation of complementary services, such as the ride-sharing service currently being tested with the start-up Sharette since 2015, or the deployment, with STIF, of secure bike parking areas near stations, via the subsidiary Promométro.

  • Through the search for increasingly efficient itineraries, deployed on our site, our mobile apps, and even on connected watches, to propose tailor-made, contextualised and multi-modal itineraries. As part of the logic of door-to-door mobility, Vélib’  and Autolib’ bike and car sharing data are integrated with our route planners.

03. Attentif à votre santé

Contrôler la qualité de l’air dans nos espaces

Nous exerçons en permanence une activité de veille et d’expertise sur l’air circulant dans nos enceintes ferroviaires souterraines. Nos mesures montrent des conditions thermohygrométriques satisfaisantes, mais des niveaux élevés de particules métalliques, émises pour l’essentiel par les systèmes de freinage de nos matériels roulants. Pour améliorer la qualité de l’air, nos efforts portent donc à la fois sur l’amélioration du renouvellement dans nos espaces et sur la réduction des émissions de particules liées au freinage mécanique.

Réduire les nuisances sonores et vibratoires

Informer sur les champs électromagnétiques

Innovation Sustainable development Commitments