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Current projects


LowEx-Concepts for the Heat Supply of Existing Multi-Family Houses (LowEx-Bestand)

Project management: Stefan Hess, PhD
Funding period: 01.06.2016 - 28.02.2022
Funding code: 03SBE0001C
Funding body: Federal Ministry for Economic Affairs and Energy (BMWi)
Promoter: Forschungszentrum Jülich GmbH (PTJ)

The thematic project network »LowEx-Bestand« ( comprehensively analyses, developes and demonstrates solutions for the application of electrically and gas driven heat pumps, heat transfer systems and ventilation systems in energetically renovated multi-family houses. Within this network, research institutes, heating industry, building technology industry and housing corporations closely collaborate in different research and development projects. The Chair of Solar Energy Systems coordinates the cooperation within this thematic network.

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EnEff:Stadt: Smart Quartier Karlsruhe-Durlach - Focus on evaluation

Project management: Dr. Stefan Hess
Funding period:01.09.2018 - 31.11.2022
Funding code: 03ET1590C
Funding body: Federal Ministry for Economic Affairs and Energy (BMWi)
PromoterForschungszentrum Jülich GmbH (PTJ)

The aim of the project is to develop, implement and assess a complex energy supply system for a partially independent power supply in a cluster of five multi-family houses in Karlsruhe Durlach. The planned energy concept consists of a natural gas CHP with local heating supply, two heat pumps and PV systems on the roofs of the multi-family houses. It is meant to minimize up to 50 % of the primary energy consumption and the related CO2-emission in a cost-efficient way. Research partners of this project are the Fraunhofer Institute for Solar Energy Systems (ISE) and the Karlsruher Energieservice GmbH (KES).

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Finished projects


EnEff2050Begleit: Competition and project support in the frame of the funding initiative "EnEff.Gebäude.2050 – Innovative projects for achieving nearly climate-neutral building stock by 2050"

Project management: Dr. Stefan Hess
Funding period: 01.07.2017 - 30.06.2020
Funding code: 03EGB0006B
Funding body: Federal Ministry for Economic Affairs and Energy (BMWi)
Promoter: Forschungszentrum Jülich GmbH (PTJ)

The project EnEff2050Begleit accompanies the funding initiative EnEff.Gebäude.2050. The project is carried out in close cooperation with the Fraunhofer Institute for Solar Energy Systems ISE and the University of Wuppertal (BUW).

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ZAFH ENsource: Centre for Applied Science, Urban ENergy Systems and Resource Efficiency (2nd funding Phase)

Coordination: Hochschule für Technik Stuttgart (Prof. Dr. habil. Ursula Eicker)
Funding period:01.01.2019 - 31.12.2020
Promoter: Ministry of Science, Research and the Arts (MWK), European Regional Development Fund (ERDF)

The Research College ENsource ( develops urban simulation, automation and optimisation tools with associated business models and tests them in practical case-studies of the industrial, commercial and municipal sector. To this end, eight research-intensive colleges, two universities, the Fraunhofer Institute for Solar Energy Systems ISE, and the Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW) cooperate together with municipalities and associated partners from industry.

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