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Smarter Together Site Vienna

Country & City

  • Austria
  • Vienna

Contact Information

The SMARTER TOGETHER project demonstration area in Vienna is located in the central part of the south-eastern district of Simmering. In total, 21 000 inhabitants will benefit from smart project solutions within the fields of refurbishment, energy, mobility, and information and communication technologies. An emphasis is made on dialogue, in line with the Vienna Smart City Framework Strategy, where the human dimension of the smart city is the focus of attention. Dialogue includes all generations and backgrounds aiming at contributing to an integrated societal dynamic. The partnership includes all actors, from government to citizens to business players, where everyone has a specific responsibility towards achieving the common goals.

* Detailed information regarding the technical and financial performance will be available at a later stage.

Within the SMARTER TOGETHER project, Vienna strives to:

  • refurbish three residential neighbourhoods with 1300 inhabitants and a total floor surface of 75 000 m2;
  • ensure total savings of 6000 MWh per year in all the refurbished housing complexes, which corresponds to the energy use of about 700 housing units;
  • guarantee more sustainable and future-oriented energy supply with 9000 MWh provided by renewable energy sources (thermal as well as electric energy), which will result in considerable savings for the tenants in energy and heating costs;
  • save about 550 tonnes of CO2 annually;
  • secure and/or create 900 jobs;
  • promote an intensive governance learning process by involving eight departments of the City of Vienna’s administration, ensuring that the experiences and results of the project will be integrated in a sustainable way all over the city.


Encountered barriers

The impact of engagement events in public areas only reached few. In addition, it was not possible to engage specific target groups sufficiently (e.g. full-time working people and families with migration background).

In order to reach more people, the project team implemented or plans to carry out the following actions:

  • get in contact with the target groups via the pupils. A cooperation with “science pool” (private education provider) was established and the content of the teaching unit was coordinated with the SMARTER TOGETHER targets.
  • in addition, the cooperation with local clubs will be sought because it is assumed that it will be very helpful for reaching broad target groups.
  • the mobile info point Sim mobil was refined and different addons were installed - a solar panel on the roof, a bike generator, an energy quiz - for making it more attractive.
  • the standard information process of the housing companies was enhanced. By installing a temporary information office on-site, the tenants had the possibility to talk to someone connected to the housing company to receive information about the refurbishment process and to express their wishes.

The tenants of one of the refurbishment projects (Hauffgasse) were averse to the refurbishment.

The team organised an information evening, and increased the opportunities for discussions in smaller groups.


The tenants thought that all of them have to pay for the e-car sharing scheme regardless or the usage. The utilisations was not high enough to reach economic feasibility.

Stronger communication efforts were necessary, including on-site support from independent people to answer questions and reduce the fear of something new. The use of a proven business model is very important.

Best Practices

Best Practices



A major focus of the project lies on the integration of the residents, and respectively the affected people of the target area in the district of Simmering. They can participate in different ways during the co-creation process, which accompanies the realisation projects. Quite a few engagement and co-creation activities took place, among which:

• Low-energy districts - the tenants of the refurbishment building Lorystraße can decide about the colour of the façade and the balconies, as well as about the design of the community space and the garden.

• Sustainable mobility - in order to select an e-bike model for the public mobility stations, a public e-bike testing was carried out. A mobility survey to support the mobility projects was also performed among the local tenants to gain knowledge about their mobility behaviour. The inhabitants also had the possibility to weigh in their wishes and ideas for the mobility point(s) during multiple events at the mobile info point Sim mobil.

• Information and engagement: there were guided walks in the target area on project-related topics like mobility or energy. Bike days took place to inform about bike topics, while the Sim mobil was used to inform tenants (in public areas, during the information events, etc). The practical support and experiences from the local urban renewal office was very helpful.





With regards to school Enkplatz, one part of the building is under a preservation order, thus it cannot be used for renewable energy sources installations. The project team was aware of this from the beginning of the project. During the planning of the zero-energy gym, this had to be considered and the needed energy generation facilities will be installed on the gym only.


The public bodies in Austria have stricter tender criteria than private companies, due to security reasons in public areas, thus all installations respectively products need a CE certificate. Furthermore, the tender and offer documents are accepted only in German. The solar bench product of the initial envisaged Serbian company did not have CE certifications and thus did not fit the Austrian tender criteria so an alternative company had to be found. This resulted in a delay. The lesson from this example was that the first question when dealing with an international company should be about the CE certification.


A predesigned administrative procedure for installing a charging station does not exist. Therefore, the acquisition of permission takes longer, there is insecurity and a strong need for cooperation with relevant actors.


The investments for SMARTER TOGETHER in Vienna are more than € 50 million, mostly for refurbishment and construction work. Return on investment depends on the different project (e.g. 7% for energy investments to much lower for constructions). The main risks are probably associated with investments for new mobility services where the long-run revenue is difficult to foresee.


* Detailed information regarding the technical and financial performance will be available at a later stage.

The measures that will be implemented include:

Energy efficiency in buildings

  • Retrofitting the building envelope
    • Residential and school buildings
  • Building services (HVAC & Lighting)
    • Installation of heat meters to measure heat consumption

Energy systems integration

  • District heating and cooling
    • More users are to be connected to the district heating
  • Thermal storage
    • Local shared heating: integration of solar thermal energy and heat storage
  • Photovoltaics
  • Thermal collectors
  • Waste heat recovery
    • Integrating solar thermal energy and waste heat to district heating
  • Smart street lighting
    • Innovative street lighting with free WLAN hotspots
Mobility & transport: 
  • Electric, hybrid and clean vehicles
    • Development of a local e-mobility strategy
    • Design and installation of e-mobility point
    • Introducing e-mobility in the factory premises of the local Siemens plant and in mail delivery
    • Electric delivery in Austrian Post (vans and fast chargers)
    • Feasibility study of an e-taxi fleet station in Simmering
  • Car sharing
    • Exclusive e-car sharing system for tenants of a social housing block
  • Bicycle infrastructure
    • E-bike sharing scheme in Simmering
  • Urban data platform
    • Together with the other two lighthouse cities in SMARTER TOGETHER, Vienna will upgrade their urban data platform into a smart data platform by integrating new datasets from energy and mobility, as well as data analysis features
  • Postal reception boxes in the social housing blocks