Future quarter 2.0 - Replicable, thermally and electrically grid-supportive conception of (positive energy) districts in a dense urban context

Status

completed (Mai 2022)

Starting point, contents and results

Over the past few years, national as well as urban climate and energy targets have been sharply raised: Austria as well as Vienna are to be climate-neutral by 2040. The expansion of decentrally generated renewable energy required to decarbonize the energy system poses major challenges, not least for the connecting public networks.

Plus-energy districts can make a significant contribution to grid relief in dense urban areas, on the one hand by exploiting energy generation potentials on site and, on the other hand, by adapting local consumption (by means of demand side management and corresponding storage capacities, e.g. in the form of the component-activated building). Such neighborhoods can also provide valuable flexibilities for the public grid.

In the course of this project, the planning process of a building complex by SÜBA in Vienna Floridsdorf, Pilzgasse 33 (PEQ21), which was designed from the very beginning to be energy-plus, was scientifically accompanied from the design phase to the submission of the building application. Numerous valuable insights were gained both in terms of the planning process and from a technical perspective. In parallel to the support of this concrete use case, the development of a replicable concept for the optimized integration of (plus-energy) quarters with a high on-site energy generation in a dense urban context into the existing grid infrastructure (concerning both electricity and heat) took place. A targeted system design using storage technologies in coordination with building efficiency, on-site power generation and consumption optimization, as well as the development of a local control strategy, will enable a mutually beneficial interaction with the overall grid or system. The daily, weekly and seasonal storage systems planned for the district are integrated in such a way that they can react flexibly to demands from the grid across sectors.

The core results detailed in the following report include the following aspects:

• Comprehensive definition and operationalization of the Plus-Energy-Quarter approach with inclusion of real framework conditions - further developed on the basis of the "Future Quarter" method.
• Need for adaptation of the planning process in PEQ planning
• Technical variants of a renewable, grid-serving energy supply concept
• Planning options for PV maximization as well as dealing with land use conflicts
• Regulation strategies that take into account user needs and comfort from the very beginning.
• Demonstration of the economic framework of a PEQ and enabling business models
• Replicability of the approach with illustration of two further example neighborhoods.

In the course of the project, all technical innovations were accompanied by socio-scientific studies regarding user acceptance as well as by analyses of the LCC and the LCA in order to include both economic and ecological considerations.

In the follow-up project ZQ3Demo, the PEQs Pilzgasse and Campo Breitenlee will be accompanied during implementation and the technical functioning will be optimized and validated during a monitoring period of at least one year. In addition, the information and involvement of the users in the operation will be accompanied by social science.

Project management

UIV Urban Innovation Vienna GmbH

Project or cooperation partners

• University of Applied Sciences Technikum Vienna
• IBR & I Institute of Building Research & Innovation ZT GmbH
• Ing. Fritz Brandstätter Bauplanungs- & Management GmbH
• INTROPLAN GmbH
• P33 GmbH

DI (FH) Petra Schöfmann, MSc
Operngasse 17-21
A-1040 Vienna
Tel.: +43 (1) 4000 84279
E-Mail: schoefmann@urbaninnovation.at
Web: www.urbaninnovation.at