Decarb Alt Erlaa

The aim of this research project is to develop measures to improve Alterlaa's thermal performance and decarbonize its heating system as far as feasible. The potentials and risks are to be analyzed in technical, economic and social terms. The aim is to adopt a package of measures based on this. The motivation behind this submission is to develop the Alt Erlaa residential and retail park in Vienna's Liesing district, one of the largest residential complexes in Austria, into a climate-neutral neighborhood. Its builder and owner, the non-profit housing association GESIBA (represented by AEAG), has the concrete intention of implementing a comprehensive project in the near future with the components of thermal improvement and complete conversion from fossil fuels to climate-neutral energy sources. Preliminary work has already been carried out on the technical building planning. The exploratory study submitted in this case substantially strengthens and expands this project. The Alt Erlaa residential and retail park in Vienna Liesing comprises 3,200 apartments for approx. 9,000 people and 340,000 m² of gross floor area in three components. It was built between 1973 and 1985 by the non-profit developer GESIBA according to plans by the Viennese architect Harry Glück. On this scale, it is therefore a unique flagship project that demonstrates how decarbonization in the building sector can be achieved on a large scale.