SÜBA takes on
a pioneering role
in Plus Energy Districts

The first Plus Energy District in Vienna is being realised at the the property at Pilzgasse 33 in the 21st district of Vienna as part of the research project Future District 2.0 and in cooperation with the City of Vienna.

The planned district comprises around 34,000 m² GFA evenly divided between residential use and office space. The building and energy concept developed so far results in a heating requirement of 15 kWh / m² NFA per year thanks to a highly efficient building envelope. Around 5,000 m² of photovoltaic modules will be placed on suitable rooftops and facade surfaces, which corresponds to a specific yield of 21 kWh / m² GFA per year, producing excess energy component activation is planned on the heat or cold emission side. For heat supply and storage, heat pumps are designed with a geothermal probe field with around 160 boreholes of 150 m each.

Innovation in technology and planning: When planning new areas, energy aspects are often considered later in the planning phase, resulting in additional costs due to increased planning effort, construction delays, and liability risks. More ambitious solutions are usually no longer possible. The situation is unique at Pilzgasse—the energy concept was taken into account from the outset.

But what makes the planned project even more exciting is the push not only to optimise the neighbourhood but also the overall structure. Specifically, SÜBA will implement an operating model in electricity production that benefits residents as producers (prosumers) with utility companies as customers a win-win solution. By feeding excess electricity into the grid, the general share of renewable energy can be increased and, at the same time, an additional benefit for residents can be gained from the energy produced.

The planning of Pilzgasse is scientifically supported by the FFG research project “Zukunftsquartier 2.0” to develop, in addition to Pilzgasse, a replicable concept for the grid-friendly integration of Plus Energy Districts with high on-site energy supply into the existing grid infrastructure (electricity and district heating network). The consortium consists of Urban Innovation Vienna (UIV), FH Technikum Wien, IBR&I Institute of Building Research & Innovation, Hacon GmbH, SÜBA, and Böhm Stadtbaumeister & Gebäudetechnik GmbH. The planning departments of the City of Vienna as well as other important stakeholders and other interested districts are also involved in the project in order to also learn beyond this sole occasion.

This creates a flagship project in terms of climate-friendly building, which not only sensibly combines living, business, and climate protection but also benefits the urban energy supply.

With its projects, SÜBA makes an important contribution to sustainability, not only regarding CO2 reduction but also by assuming responsibility for present and future generations.