integraTE-XL

The overarching project objective of integraTE-XL is to establish technically and economically attractive systems for thermal and electrical energy supply using PVT collectors and heat pumps in existing large apartment blocks and commercial properties.

By implementing PVT-systems in the difficult market environment of renovation, it is expected that with a PVT technology share of only 5% in all newly renovated multi-family buildings, total savings of approximately 560 million tonnes of CO₂ can be achieved over the next 25 years.

To initiate PVT systems as well as measures for market development and knowledge transfer, target group-specific marketing materials and a "PVT chatbot" for automated responses to en-quiries from potential customers are being developed together with a large number of compa-nies involved in the project.

As accompanying measures for the market establishment of PVT systems for building energy supply, planning and design tools are being developed and made available to market partici-pants.

In order to demonstrate the performance of PVT building energy supply systems, a total of approx. 6-9 PVT systems will be analysed over a period of at least one year and optimised if necessary.

The image in Fig. 1 shows the roof of the new town hall building in Offenbach an der Queich, which is supplied with energy by PVT collectors and a heat pump via a cold local heating network.

To ensure market transparency and objective market positioning, product- and system-specific tests are carried out as part of the project.

The technical and economic findings resulting from the project will be prepared for the design of political framework conditions (e.g. funding schemes, energy labelling, Building Energy Act) and introduced into the relevant committees and communicated to decision-makers.

In order to utilise international experience in the field of PVT collectors and PVT systems for the project and to make the results from integraTE-XL available to a broad international spe-cialist public, the project is managed and actively involved in the task 73 "PVT Systems" of the Solar Heating and Cooling Programme (SHC) of the International Energy Agency (IEA).

12/01/2024 – 11/30/2028

Scientific Partner:

Institute for Building Energetics, Thermotechnology and Energy Storage (IGTE) at the University of Stuttgart
www.igte.uni-stuttgart.de

Fraunhofer Institute for Solar Energy Systems ISE in Freiburg

www.ise.fraunhofer.de

Institute for Solar Energy Research Hameln (ISFH)

www.isfh.de

The integraTE-XL project is funded by the Federal Ministry for Economic Affairs and Energy (BMWE) on the basis of a resolution passed by the German Bundestag under funding code 03EN6048C. Technical and administrative project support is provided by Project Management Jülich (PtJ). In addition, the German Heat Pump Association (BWP), the German Heating Industry Association (BDH), and the German Solar Industry Association (BSW), as well as 22 industry partners, are supporting the project.

The authors would like to express their gratitude for the support and assume responsibility for the content of this publication.