We show how it’s done

We are using innovative ideas to help shape the energy system of the future.
See for yourself by taking a look at our showcase projects in the areas of



Digital schools

Wien Energie is paving the way to the classroom of the future. By 2022, we will be equipping 126 vocational colleges, polytechnics and middle schools in Vienna with comprehensive, high-speed WLAN access. This project involves an investment volume of EUR 40 million.


Pilot blockchain projects

Blockchain technology is set to revolutionise the energy industry, which is why Wien Energie is already proactively dealing with the topic and developing expertise. In 2017, for example, Wien Energie carried out the world’s first blockchain gas trade.


Smart drones

Inspections are an important part of the work to ensure that technical facilities remain efficient and able to function for a long period of time, and drones are increasingly being used for this purpose, making it possible for solar power plants, wind turbines and district heating pipelines to be maintained faster, cheaper and more reliably.


Viertel Zwei

Wien Energie is trialling aspects of future urban life by supporting innovative mobility, energy and living concepts in the VIERTEL ZWEI urban development area, in doing so also creating Austria’s first energy community. The residents trade self-generated solar power among themselves using blockchain technology.



Charging point expansion drive

The breakthrough of e-mobility depends on having a well-developed charging infrastructure. Wien Energie will therefore build 1,000 charging points the Greater Vienna metropolitan area by 2030 with a view to guaranteeing a comprehensive network of charging points for e-cars. Customers will never be more than 200 metres away from the next charging station.


E-mobility citizen participation

Wien Energie will build a total of 1,000 charging points by 2020 to ensure that there is a comprehensive network in place for electric cars. In the course of this project, residents of Vienna were given the opportunity to participate in the expansion drive by means of investment packages, thereby playing a role in the mobility revolution.

Circular economy


Sewage sludge drying

Wien Energie has developed an innovative process for the digestion, dehydration, drying and incineration of sewage sludge to produce environmentally-friendly district heating. 40,000 tonnes CO2 can thus be saved every year. An additional, environmentally-friendly advantage of the process is that phosphorus can be recovered.


The Vienna Model

The model combines the use of waste heat from power generation (cogeneration), the generation of energy from waste, the utilisation of industrial heat and the use of renewable energy sources. This saves three million tonnes of CO2 every year.



Liesing solar power plant

Our solar power plant in Vienna’s Liesing district not only produces CO2-free electricity, but also provides the optimum environment in the city for species requiring protection. By building the system and caring for vegetation in a particular way, plants and animals – such as bees, grasshoppers or field hamsters – can really thrive.


PV citizen participation

Our citizen solar power plants enable us to offer people a way of participating financially in PV systems, who in turn benefit from a secure investment and favourable electricity tariffs, while promoting the expansion of renewable energy in the city and cutting CO2 emissions.


Solar roof on Haus des Meeres

As part of the refurbishment of the Haus des Meeres, Wien Energie is installing a solar roof consisting of 202 photovoltaic modules with a total output of at least 63 kWp. What is unique about this new solar roof is the use of special bifacial glass-glass solar modules which generate power not only from above but also from below.

Heating and cooling


District cooling

Wien Energie offers district cooling, so-called green cooling, on hot days. This smart technology uses waste heat to power the cooling machines and reduces CO2 emissions by around 50 percent compared with conventional air-conditioning systems.


District heating from Manner

Manner feeds waste heat from baking processes into the local district heating network, where it is used for heating and hot water by 600 households and businesses in the immediate vicinity of the wafer production plant, saving 1,000 tonnes of CO2 every year.



GeoTief is a research project for surveying the geological conditions in the eastern part of Vienna. This relates to scientifically investigating the potential for environmentally-friendly heat from subterranean reservoirs of hot water, with a view to producing a 3D model of Vienna’s geology using the collected data by 2021.


High-pressure heat storage tank

The world’s first high-pressure heat storage tank makes it possible for heating to be used when it is needed. Irrespective of when it is produced. It covers the annual heating requirements of around 20,000 households and saves around 11,000 tonnes of CO2 every year by optimising production and storage.


Large-scale heat pump

Utilising existing waste heat is an essential part of being able to supply heating in an even cleaner way. Simmering is where we run the most powerful large-scale heat pump in Central Europe, supplying around 25,000 households in Vienna with environmentally-friendly district heating, thereby saving 40,000 tonnes of CO2 every year.


Power-to-heat plant

The power-to-heat plant resembles an oversized kettle that converts excess electricity into environmentally-friendly heat. The plant has a total capacity of 20 MW and supplies 20,000 households with district heating, thereby playing a key role in maintaining stability in the power grid.