EfficienCE is a cooperation project funded by the Interreg CENTRAL EUROPE programme that aims at reducing the carbon footprint in the region. Most Central European cities have extensive public transport systems, which can form the basis of low-carbon mobility services. More than 63% of commuters in the region are using public transport. Measures to increase the energy efficiency and share of renewables in public transport infrastructure can thus have a particularly high impact on reducing CO2.

This is achieved by supporting local authorities, public transport authorities and operators by developing planning and financing strategies and action plans, implementing pilot actions, developing tools and trainings to plan and operate low-carbon infrastructure, and by transferring knowledge and best practices on energy-efficient measures across Central European regions.

Twelve partners, including seven public transport authorities/companies from seven countries are working together for three years to exploit the untapped potentials in this sector and to contribute to the EU’s ‘White Paper’ goals to cut transport emissions by 60 percent by 2050 and to halve the use of ‘conventionally fuelled’ cars in urban transport by 2030.

Public transport as a driver of the energy transition in the transport sector

12 October 2021, 14:30 - 16:00 (CET)

In contrast to the decrease in CO2 emissions in other sectors, transport emissions have remained nearly constant or have even increased. It is widely known that a systemic transformation of the transport sector is needed by introducing policies and mechanisms that: reduce traffic, increase the share of environmentally-friendly modes of transport and improve vehicle technology. Public transport has a key role to play here by making trips more efficient and by supporting the green electrification of vehicles and use of alternative fuels. However, the question of how public transport can actively contribute to increasing the share of renewable energy in electric public transport operations is not widely discussed.

In this session, we will present responses to this question based on planning strategies and the pilot results of the Interreg CE EfficienCE project as a part of the European Week of Regions and Cities event. 

Join us and register HERE.




take a virtual site visit to the metro station in Vienna

A new, foil-based photovoltaic system is being tested on the roof of a Vienna metro station at the Ottakring metro station by Wiener Linien. Three virtual site visits were prepared to introduce the solution. 


Press release

In Gdynia you can charge a car thanks to trolleybuses

The first mobile charging station for electric cars powered by a trolleybus network was built in Gdynia. A press conference was held on the 9th June at the PKT headquarters about this unique mobile charger, which will use recovered energy from the braking of trolleybuses.



Webinar held on energy-efficient metro stations, with virtual site visit to Vienna

The Transnational Webinar titled “Planning for energy-efficient metro stations” took place on the 18 May 2021, where the presenters introduced different energy-efficient solutions implemented in metro stations



Rationalisation of the public transport system in Maribor

A study was prepared about the best economic and technical solutions for the electrification of bus line no. 6 in Maribor to achieve sustainable goals and improve air quality in the city.




Three cities, Munich, Hamburg and Leipzig strive to develop urban data platforms and digital twins across cities that can be implemented in other German cities as well.




The Pilsen City Public Transport Company (PMDP) has successfully finished its pilot in the Interreg EfficienCE project, namely a series of tests of a battery buffer storage station at the final station of trolleybus line 16. During eight test phases, each of them consisting of a five-days working week, various cases of usage have been tested.


Project duration

Start Date


End Date


Project in numbers






ERDF funding in mio EUR



Project Partners

The EfficienCE Project brings together 12 partners from 7 Central European Countries.

Documents and publications

Public EfficienCE documents and publications are available for download in this section.

--> Discover more about EfficienCE project in the flyer, available in the following languages and versions: en, cz, de/at, hu, it, pl, si

--> You are kindly invited to show the commitment of your organisation towards energy efficiency in public transport by signing the EfficienCE Declaration, downloadable HERE. More information about the Declaration and list of signatories can be found HERE.

To keep you updated on the project results, we invite you to subscribe to the EfficienCE Newsletter.