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Smarter Together Site Vienna


Project status



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.

Demo Site Expected Impact

* 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.



* 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


Julia Girardi
City of Vienna

Building aspects

  • Building Energy Services
  • heating and DHW
  • Building Energy Services
  • lighting and appliances
  • Installed Renewable Energy Sources
  • photovoltaic
  • Installed Renewable Energy Sources
  • solar thermal collectors
  • Technology used to supply the buildings
  • boiler
  • Technology used to supply the buildings
  • district heating (DH) network
  • Technology used to supply the buildings
  • electrical equipment
  • Technology used to supply the buildings
  • heat pump: reversible
  • Technology used to supply the buildings
  • thermal storage

Mobility Type of Intervention

  • Vehicles

Thematic Field

  • Mobility and Transport
  • Refurbished Building(s)

Project data