By their very nature, RATP’s public transport services consume a relatively small amount of energy per passenger. Eight to ten times less energy is required to transport a single passenger in the metro or RER than to perform the same journey in a private car, while making the same journey in a bus uses half as much energy as a car. RATP has set itself the ambitious goals of reducing its energy consumption by 6% by 2012 and by 15% by 2020, compared to 2004 levels.
The Ticket to Kyoto carbon footprint
RATP, a partner of the European Ticket to Kyoto Project
A shared commitment to reduce the direct and indirect CO2 emissions of public transport.
Ticket to Kyoto is a partnership project over 4 years (2010-2014) involving five transport networks in Europe: STIB in Brussels, Belgium, RET in Rotterdam, The Netherlands, MoBiel in Bielefeld, Germany, TfGM in Manchester, United Kingdom, and RATP.
The objective of Ticket to Kyoto is to exchange, innovate, and experiment with solutions for reducing the direct and indirect CO2 emissions of public transport. The ultimate goal is to contribute to the European objectives of the Kyoto Protocol in 2020.
For RATP, the scope is limited to energy savings and CO2 reduction which is feasible with the infrastructure and through changes in the behaviour of public transport employees (driving, maintenance, site occupation...) of the various partners.
RATP expects three types of outcomes for this project:
- a joint action plan with the partners that is directly operational in order to reduce CO2 emissions of the transport infrastructure by 2020,
- generalised best practices in the short term and quick profits,
- conducting test investment: heat recovery and low-energy lighting.
Two major projects will be undertaken by RATP:
- the implementation of a heat pump system for recovering energy in the metro: in the air and water drainage,
- a comprehensive study on the lighting of a portion of the metro network's pilot line.
Adiabatic ventilation video
The following video contrasts the drawbacks of air conditioning with the advantages of adiabatic ventilation, which was presented at the second annual conference in May, 2011.
Running time: 2'38'
Main action plans
RATP’s action plans to reduce energy consumption concern all fields of activity.
- Thanks to regenerative brake systems, the new metro trains gradually being brought into service require some 30 to 40% less energy to operate than the existing models.
- RATP conducts energy audits of its industrial and tertiary-sector buildings. These give rise to site-specific action plans.
- All RATP employees are made aware of the importance of saving energy and adopting eco-friendly habits.
“Eco-lighting” at Censier Daubenton
RATP is currently trialling a very-low-energy lighting solution, which uses up to three times less energy than conventional systems, at Censier Daubenton station on line 7 of the metro.
All of the lights at the station – in the ticket hall, passenger hall, corridors, staircases and escalators and platforms – are now equipped with LED lighting. In total, 100,000 LEDs are now installed in the station’s 600 light fittings. With 300 metro stations and nearly 70 RER stations, electricity consumption in transport environments accounts for approximately 10% of RATP’s total energy bill.
One of the main ways in which energy can be saved in stations is in lighting, hence the importance of this experiment with a low-energy solution.
This LED technology uses very little energy, is more energy-efficient and lasts much longer than conventional lighting solutions. In addition, the LEDs can be recycled as electronic components, and emit very little heat.
On a practical note, LEDs are not affected by impacts or vibrations, light up immediately and do not burn your fingers!
An innovative system has made it possible to adapt existing equipment to function with standard LED tube lights. This solution should reduce electricity consumption by two thirds, while providing lighting that is just as bright as, if not brighter than, that provided by the previous system.
RATP decided to trial the system in a real station in order to observe the energy savings actually achieved in the medium term.
It is estimated that the overall energy saving for the station’s entire lighting system will be more than 65%. Because LEDs also have a much longer life expectancy than the light bulbs currently used, this technology will require less frequent routine maintenance and replacement, and thus considerably reduce waste. It is therefore more environmentally friendly than the current system. If the benefits of this new technology are shown to be as conclusive as expected, RATP may gradually roll out LED lighting across its network.