Foto: Frontansicht des Einfamilien-Passivhauses in Pettenbach

e80^3-Buildings - Sub project 4: Demonstration object

Alongside the realisation of the plus energy building in Kapfenberg, a demonstration project is scheduled to be created that accomplishes an economically viable and technically innovative solution for the future.

Short Description

This project is a subproject of the flagship project "e80^3-Buildings - Renovation Concepts for Residential Buildings to Plus-Energy Buildings with Prefabricated Active Roof-and Façade Modules, Integrated Building Services and Grid Integration"




Starting point / motivation

The main objective of the subproject demoproject (SP4) is to practically implement the foregoing development in the field of active and passive façade and building service modules and to evaluate and test them in a demonstration project in Kapfenberg.

The combination of prefabricated façade and building service modules as a possible future oriented renovation technique has not yet been tested in a real case study in Austria.

The prefabricated active and passive façade and building service modules are supposed to be installed in the pilot project. After an evaluation the developed elements are expected to be ready for series production.

Content and goals

  • Implementation of active and passive façade and building service modules

  • Optimisation of the building with innovative energy and distribution concepts

    • 80% energy efficiency – reduction of energy demand

    • 80% ratio of renewable energy sources to the total energy consumption

    • 80% reduction of CO2-emissions

  • Optimisation of the energy concepts by using existing heat and power systems that reach plus energy standard in the network

  • Raising awareness of a sustainable and energy efficient use of apartments for residents and property managers

  • Dissemination of results for follow-up projects and visualisation of success nationally and internationally

If the implementation is successful a demonstration project that acts as a benchmark will be created. Through practical implementation it will be shown that plus energy concepts in the field of social housing are possible. It will also be shown that they not only make a contribution to a future CO2-neutral building portfolio but also increase the user comfort and contribute to a sustainable use of our building stock.


The project is structured in five work packages covering different topics, each with specific areas of responsibility.

  • In WP1 project partner AEE INTEC is responsible for the scientific project monitoring aiming to optimise the results for the scientific program “Haus der Zukunft Plus” and to establish optimal communication between practical implementation and scientific research.

  • Additionally, publication and dissemination activities to visualise the results and the gained experiences are performed.

  • In WP2 “optimisation plus energy concept” the scientific basis for the “plus energy network” is developed using appropriate simulations.

  • In WP3 the detailed design is finalised and recorded. Planning methods and planning meetings are used for the purpose of defining and fine-tuning.

  • In the course of WP4 the planned measures will be implemented and a developed system solution will be realised.

  • In WP5 “quality assurance” the TQB-criteria are identified and incorporated into the planning with regular documentation.

Expected results / conclusions

The term „plus energy building“ is already used for new buildings but so far no published results on achieving this ambitious goal have been mentioned.

In renovation the challenge is even more ambitious. Implementing technologies from passive houses in renovation as well as taking into account the realignment of a building to be an energy producer is possible but requires new concepts. The development of new, innovative renovation concepts taking into account already approved technologies and their direct implementation throughout the course of the project provides the opportunity to demonstrate the feasibility in practice and to demonstrate their advantages. By implementing these concepts within the research project, the new developments can be tested and evaluated. Through widespread dissemination of the evaluation results, the possibility for further realisations will be increased.

Project Partners

Project management

Project or cooperation partners

Contact Address

DI Dr Karl Höfler
AEE – Institut für Nachhaltige Technologien
Feldgasse 19
A-8200 Gleisdorf
Tel.: 43 (3112) 5886-325
Fax: 43 (3112) 5886-18
Web:, e80^3 - Buildings key project website

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