System Integration

In the "System Integration" business area, we deal with the transformation of our energy system into a target system without fossil fuels. This involves integrating renewable energies into the grid structures on the one hand and increasing the efficiency, flexibility and resilience of energy systems on the other: The solution lies in the cross-sector integration of energy systems in electricity, gas and heating grids with their diverse possibilities for storage utilization and flexibility options. Structural planning and management with the simultaneous provision of system services within the "electricity, heating, cooling and gas grids" infrastructure in the evolving energy market open up a comprehensive range of solutions for our customers from industry and the public sector.  

Our main areas of focus are 

  • Integrated networked energy supply concepts, so-called "on-site systems" with a high proportion of local and regional resources
  • Networked operations management for intersectoral, cross-divisional energy systems, digital integration into grid control systems and the energy market 
  • Intersectoral energy supply systems with distributed storage systems 
  • System simulation, combined heat and power, thermal and electrical storage and also hydrogen-based energy systems  
  • Digitalization: AI for system planning (energy system and grids), operational management and asset management 
  • Living labs: CO2-reduced energy supply in industry and the building sector, cross-media integration in electricity/heating/cooling and gas/H2 grids with flexibility management

Research Topics

In the Business Area "System Integration​", our work focuses on the following research topics:

 

Energy System Analysis

 

Integrated Energy Infrastructures: Electricity, District Heat, Gas

 

Energy Data and Monitoring

 

Flexibility Management of Energy Systems

 

Energy Solutions for Industry

 

Climate-Neutral Cities, Urban Districts and On-Site Systems

 

Electric Mobility

 

Living Labs

R&D Infrastructure

We offer comprehensive services ranging from the simulation of energy systems to the testing of components and systems.

 

Digital Grid Lab

  • Hardware-in-the-loop (HIL) system
  • 8 power amplifiers (100 kVA each)
  • Real grid control center
  • Test stand for smart grid control systems and communications technology
  • Extensive tool suite for IP-based communication protocols
  • Benchmark test environment for the characterization of energy management systems
 

Center for Power Electronics and Sustainable Grids

  • Direct connection to the high-voltage grid
  • Power electronics in the multi-megawatt range for low and medium voltages
  • Highly dynamic 1 MVA grid simulator
  • Digital Grid Lab, Medium Voltage Lab, Multi-Megawatt Lab and Power Converters Lab
 

Accredited Lab

TestLab Power Electronics

  • Measurement of PV inverters, battery converters and fast charging infrastructure
  • Measurement of electrolysers, CHPs and other electrical generators / consumers
  • Climatic chamber for large equipment up to 2.5 MVA
  • Quick Analysis for PV Power Plants
  • Accredited according to DIN EN ISO/IEC 17025:2018.

Tools

 

Energy System Models at Fraunhofer ISE

  • National and international energy systems
  • Energy systems in regions, cities and communities
  • Industrial or municipal energy systems

Contact

Christof Wittwer

Contact Press / Media

Prof. Dr. Christof Wittwer

System Integration, Integrated Energy Infrastructures: Electricity, District Heat, Gas

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5115

Christoph Kost

Contact Press / Media

Dr. Christoph Kost

Energy System Analysis

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5750

Nicolas Réhault

Contact Press / Media

Nicolas Réhault

Energy Data and Monitoring

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5352

Thomas Fluri

Contact Press / Media

Dr. Thomas Fluri

Climate-Neutral Industry

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5994

Robert Kohrs

Contact Press / Media

Dr. Robert Kohrs

Electric Mobility, Flexibility Management of Energy Systems

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5708

Annette Steingrube

Contact Press / Media

Dr. Annette Steingrube

Climate-Neutral Cities, Urban Districts and On-Site Systems

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5062

Gerhard Stryi-Hipp

Contact Press / Media

Gerhard Stryi-Hipp

Living Labs

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5686

Publications on the Topic "System Integration"

Jahr
Year
Titel/Autor:in
Title/Author
Publikationstyp
Publication Type
2026 Uncertainties in the German energy transition: detecting robust solutions under shock events in long-term transformation pathways
Grimm, Gunter; Jürgens, Patrick; Kost, Christoph
Zeitschriftenaufsatz
Journal Article
2026 Closing the ambition gap: Germany's energy transition in line with a 1.5°C carbon budget
Jürgens, Patrick; Kaiser, Markus; Senkpiel, Charlotte; Thelen, Connor; Kost, Christoph; Henning, Hans-Martin
Zeitschriftenaufsatz
Journal Article
2026 Benefits and Allocation Principles of Sector-coupled Energy Communities
Wanapinit, Natapon; Thomsen, Jessica
Zeitschriftenaufsatz
Journal Article
2026 Improving the simulation-based optimization in the REMod model to deal with complexity in energy system modeling
Jürgens, Patrick; Müller, Paul; Brandhuber, Fritz; Kost, Christoph
Zeitschriftenaufsatz
Journal Article
2025 Allocation Procedures in Life Cycle Assessment of Negative Emission Technologies
Fischer, Marie; Joseph, Wilson Charles Kumar; Hagemann, Nikolas; Herceg, Sina; Drews, Mathias; Kühnhold-Pospischil, Saskia
Zeitschriftenaufsatz
Journal Article
2025 Highly active and selective Ag/C catalysts for CO2 electrolysis to CO using 4-aminothiophenol as anchoring agent
Seteiz, Khaled; Grammel, Hannes; Häberlein, Josephine N.; Heizmann, Philipp A.; Metzler, Lukas; Rusitov, Dennis; Günthel, Michael; Knäbbeler-Buß, Markus; Vierrath, Severin; Disch, Joey
Zeitschriftenaufsatz
Journal Article
2025 Integrated cloud platform for energy management of self-sustainable island communities
Jelic, Marko; Corrêa, Dayanne Peretti; Jelic, Dea; Berbakov, Lazar; Werner, Daniel; Maruf, Md Nasimul Islam; Lázaro, Ignacio; Fernández, Izaskun; Keane, Marcus; Tomasevic, Nikola
Zeitschriftenaufsatz
Journal Article
2025 Design, simulation, and experimental evaluation of an agrivoltaic greenhouse in Turkey
Özdemir, Özal Emre; Bretzel, Tamara; Gfüllner, Leonhard Josef; Gorjian, Shiva; Katircioglu, Yasar; Dur, Berkay; Trommsdorff, Maximilian
Zeitschriftenaufsatz
Journal Article
2025 Thermally driven ultrapure water production for water electrolysis - A techno-economic analysis of membrane distillation
Schwantes-Chavan, Rebecca; Morales, Yair; Pomp, Eric; Singer, Jan; Chavan, Kirtiraj; Saravia, Florencia
Zeitschriftenaufsatz
Journal Article
2025 Proportional control of a chiller-dry cooler-combination: Efficient and robust
Chaigneau, Matthieu; Hennemann, Timo; Nienborg, Björn
Zeitschriftenaufsatz
Journal Article
2025 Kernfusion: Realistischer Baustein eines klimaneutralen Energiesystems?
Wurbs, Sven; Henning, Hans-Martin
Zeitschriftenaufsatz
Journal Article
2025 Techno-economic analysis of a solar calciner for CO2 emissions reduction in the Chilean cement industry
Zuleta Marín, Juan Sebastián; Bern, Gregor; Platzer, Werner; Dinter, Frank
Zeitschriftenaufsatz
Journal Article
2025 Evaluating low-temperature heat sources for large-scale heat pump integration: A method using open-source data and indicators
Fuchs, Nicolas; Yanez Vazquez, Luis Guillermo; Nkongdem, Bertrand; Thomsen, Jessica
Zeitschriftenaufsatz
Journal Article
2025 Herausforderungen und Chancen dynamischer Stromtarife
Fluri, Verena; Kost, Christoph; Sassen, Christian; Derzbach, Robin; Thomsen, Jessica; Ganter Naess, Lina; Ameling, Justus; Haas, Klemens; Frey, Hellmuth; Lendowski, Eva
Zeitschriftenaufsatz
Journal Article
2025 Germany - Insights on Climate Action Ten Years after the Paris Climate Agreement
Senkpiel, Charlotte; Schlomann, Barbara; Henning, Hans-Martin; Knopf, Brigitte; Hans, Nicolai; Schmidt, Cynthia
Aufsatz in Buch
Book Article
2025 Bidirectional battery electric vehicle fleets in commercial applications: Exploring synergies and substitutions with stationary battery storage
Antretter, Michelle; Oberfeier, Paula; Surmann, Arne; Schäfer, Mirko; Kühnbach, Matthias
Zeitschriftenaufsatz
Journal Article
2025 Socio-technical perspectives for mechanical ventilation systems in buildings: predictors of attitude and user satisfaction
Berneiser, Jessica; Maier, Diana; Gölz, Sebastian; Auerswald, Sven; Dinkel, Arnulf
Zeitschriftenaufsatz
Journal Article
2025 Direct and indirect electrification in the German industry from a sector-coupled energy system modeling perspective
Kaiser, Markus; Senkpiel, Charlotte; Henning, Hans-Martin; Kost, Christoph
Zeitschriftenaufsatz
Journal Article
2024 Recommendations for a positive energy district framework - Application and evaluation of different energetic assessment methodologies
Gondeck, Marie; Triebel, Marc-André; Steingrube, Annette; Albert-Seifried, Vicky Bo Ki; Stryi-Hipp, Gerhard
Zeitschriftenaufsatz
Journal Article
2024 Fahrzeugflotten bidirektional laden
Kohrs, Robert
Zeitschriftenaufsatz
Journal Article
2024 Bottom-Up-Ansatz zur Modellierung von Prosumenten im Energiesystem
Fluri, Verena
Zeitschriftenaufsatz
Journal Article
2024 Actor analysis with focus on decarbonization of energy-intensive industries in Germany
Schneider-Strehl, Leonard; Berneiser, Jessica; Gölz, Sebastian
Zeitschriftenaufsatz
Journal Article
2024 Operative Benefits of Residential Battery Storage for Decarbonizing Energy Systems: A German Case Study
Wanapinit, Natapon; Offermann, Nils; Thelen, Connor; Kost, Christoph; Rehtanz, Christian
Zeitschriftenaufsatz
Journal Article
2024 Energy Communities als Teil des Bilanzkreismanagements 2.0
Surmann, Arne; Verkely, Jannik
Zeitschriftenaufsatz
Journal Article
2024 Deconstructing corporate net-zero and climate neutrality targets in the German chemical industry
Riedel, Franziska Sophie
Zeitschriftenaufsatz
Journal Article
2024 Increasing Spatial Resolution of a Sector-coupled Long-term Energy System Model: The Case of the German States
Brandes, Julian; Jürgens, Patrick; Kaiser, Markus; Kost, Christoph; Henning, Hans-Martin
Zeitschriftenaufsatz
Journal Article
2024 Analyse von Wärmequellen für den Einsatz von Großwärmepumpen in Wärmenetzen
Paitazoglou, Reuven; Hanßke, Anja; Fuchs, Nicolas; Jentsch, Andrej
Zeitschriftenaufsatz
Journal Article
2024 Risk analysis for agrivoltaic projects in rural farming communities in SSA
Adelhardt, Nora; Berneiser, Jessica
Zeitschriftenaufsatz
Journal Article
2024 Synthesis and Characterization of Carbon-Based Heterogeneous Catalysts for Energy Release of Molecular Solar Thermal Energy Storage Materials
Magson, Lucien; Hölzel, Helen; Aslam, Adil S.; Henninger, Stefan; Munz, Gunther; Moth-Poulson, Kasper; Knäbbeler-Buß, Markus; Funes-Ardoiz, Ignacio; Sampedro, Diego
Zeitschriftenaufsatz
Journal Article
2024 System Flexibility in the Context of Transition towards a Net-zero Sector-coupled Renewable Energy System - Case Study of Germany
Gaafar, Nourelden; Jürgens, Patrick; Sepúlveda Schweiger, Jael; Kost, Christoph
Zeitschriftenaufsatz
Journal Article
2024 Implications of hydrogen import prices for the German energy system in a model-comparison experiment
Schmitz, Richard; Brandes, Julian; Nolte, Hannah; Kost, Christoph; Lux, Benjamin; Haendel, Michael; Held, Anne
Zeitschriftenaufsatz
Journal Article
2024 To charge or not to charge? Using Prospect Theory to model the tradeoffs of electric vehicle users
Pelka, Sabine; Bosch, Antonia; Chappin, Emile J.L.; Liesenhoff, Fabian; Kühnbach, Matthias; Vries, Laurens J. de
Zeitschriftenaufsatz
Journal Article
2024 Wird Kernfusion Teil unseres Energiesystems?
Henning, Hans-Martin; Pittel, Karen
Zeitschriftenaufsatz
Journal Article
2019 Akzeptanz und Konflikte als Zustände regionaler sozialer Prozesse. Anwendung eines transdisziplinären Analyserahmens
Gölz, Sebastian; Langer, Katharina; Becker, Annalena; Götte, Sebastian; Marxen, Tim; Berneiser, Jessica
Aufsatz in Buch
Book Article
Diese Liste ist ein Auszug aus der Publikationsplattform Fraunhofer-Publica

This list has been generated from the publication platform Fraunhofer-Publica

Jahr
Year
Titel/Autor:in
Title/Author
Publikationstyp
Publication Type
2025 Bausteine eines intelligenten Stromnetzes der Zukunft
Wittwer, Christof
Vortrag
Presentation
2025 Klimaneutral bis 2045: Klappt das in Theorie und Praxis? Entwicklungen, Prognosen und Herausforderungen in der Region
Burger, Bruno
Vortrag
Presentation
2025 Digital System Integration for the Energy System Transition
Wittwer, Christof
Vortrag
Presentation
2025 Anforderungen an das Energiesystem und die Integration von Speichern
Wittwer, Christof
Vortrag
Presentation
2025 Das "große" Bild - Globale und nationale Entwicklungen
Henning, Hans-Martin
Vortrag
Presentation
2025 Stromerzeugung in Deutschland im Jahr 2024
Burger, Bruno
Vortrag
Presentation
2025 Die deutsche Energiewende - Erreichter Stand und Einschätzung zu wichtigen Handlungsfeldern
Henning, Hans-Martin
Vortrag
Presentation
2025 Fakten zur Energiewende
Burger, Bruno
Vortrag
Presentation
2025 Stromerzeugung in Deutschland im Jahr 2024
Burger, Bruno
Vortrag
Presentation
2025 Key Elements for the Development of the Future Energy System and the Role of Green Hydrogen
Henning, Hans-Martin
Vortrag
Presentation
2025 Die deutsche Energiewende: Historische Entwicklung und Szenarien bis 2045
Burger, Bruno
Vortrag
Presentation
2025 Bidirektionale Fahrzeugflotten in Unternehmen: Ergänzung oder Bedrohung für Batteriespeicher?
Antretter, Michelle; Kühnbach, Matthias; Oberfeier, Paula; Surmann, Arne
Konferenzbeitrag
Conference Paper
2025 Impuls zur deutschen Klimaschutzpolitik nach der Bundestagswahl
Henning, Hans-Martin
Vortrag
Presentation
2025 Sensor-based on-the-fly laser processing
Hoppe, Georg
Vortrag
Presentation
2025 Die Rolle des Wasserstoffs für die Transformation des Energiesystems in BaWü
Wittwer, Christof
Vortrag
Presentation
2025 Energiewende in Baden-Württemberg
Burger, Bruno
Vortrag
Presentation
2025 Auf dem Weg in eine klimaneutrale Wärmeversorgung
Henning, Hans-Martin
Vortrag
Presentation
2025 Smart Grids - Die Digitalisierung des Energiesystems
Wittwer, Christof
Vortrag
Presentation
2025 The Future Energy System - System Architecture and Key Technologies
Henning, Hans-Martin
Vortrag
Presentation
2025 Transformationsprozess in der Energiewirtschaft - Die Energy Charts als solide Datenbasis
Burger, Bruno
Vortrag
Presentation
2025 Resiliente Netze - wie die Transformation der Netze gelingen kann
Wittwer, Christof
Vortrag
Presentation
2025 Technologien, Ausbauoptionen und Systemintegration für die Transformation des Energiesystems
Wittwer, Christof
Vortrag
Presentation
2025 Stromerzeugung in Hüfingen - Ist-Zustand und Ausblick
Burger, Bruno
Vortrag
Presentation
2024 Energiegemeinschaften und Sharing-Konzepte aus systemischer Perspektive - Potenziale, Herausforderungen, Lösungsansätze
Thomsen, Jessica
Vortrag
Presentation
2024 Gemeinschaftliche Gebäudeversorgung - der Schlüssel zur Eigenversorgung im Mehrfamilienhaus?
Oberfeier, Paula; Surmann, Arne; Ernsting, Fabian; Kühnbach, Matthias
Konferenzbeitrag
Conference Paper
2024 The Role of Biomass and Synthetic Energy Carriers in the Buildings Sector - From a Sectoral to a Cross-sectoral Perspective
Senkpiel, Charlotte; Thelen, Connor; Nolte, Hannah; Kost, Christoph; Steinbach, Jan; Deurer, Jana
Konferenzbeitrag
Conference Paper
2024 Navigating social acceptability and regulatory frameworks for a successful implementation of agrivoltaics
Gölz, Sebastian; Zoll, Felix; Doernberg, Alexandra; Trommsdorff, Maximilian; Siebert, Rosemarie
Vortrag
Presentation
2024 Auf dem Weg in eine klimaneutrale Energieversorgung
Henning, Hans-Martin
Vortrag
Presentation
2024 Zukunftswerkstatt: Die Energiewende mitgestalten - Impuls Energiespeicher
Wittwer, Christof
Vortrag
Presentation
2024 Heating the Future: Overcoming Challenges and Gaining Stakeholder Support for District Heating Transformation
Köhler, Benjamin; Berneiser, Jessica; Bürger, Veit; Herbstritt, Caren; Hünecke, Katja
Konferenzbeitrag
Conference Paper
2024 Ladeinfrastrukturpotenziale an Mehrfamilienhäusern & Nichtwohngebäuden
Kühnbach, Matthias
Vortrag
Presentation
2024 Technology innovations for a renewable energy system
Henning, Hans-Martin
Vortrag
Presentation
2024 System Integration in Energy Transition
Wittwer, Christof
Vortrag
Presentation
2024 Implementing Community-based Agrivoltaic Systems in SSA: Challenges and Mitigation Strategies
Berneiser, Jessica
Vortrag
Presentation
2024 Schlüsselbausteine zur Entwicklung des künftigen Energiesystems und die Rolle von Wasserstoff
Henning, Hans-Martin
Vortrag
Presentation
2024 The German PV and Battery Storage Market - Regional Market Development of Solar PV in Germany
Kost, Christoph
Vortrag
Presentation
2024 Key Features of the Future Energy System
Henning, Hans-Martin
Vortrag
Presentation
2024 Modelling balancing service provision in 5th gen district heating systems
Fröhlich, Erik; Öncel, Kerem; Steingrube, Annette
Vortrag
Presentation
2024 Integrierte, sektorgekoppelte Energieversorgung von Unternehmen: Die Rolle von grünem Strom, Wasserstoff und Wärme
Kost, Christoph
Vortrag
Presentation
2024 Future Photovoltaic Technology
Bett, Andreas W.
Vortrag
Presentation
2024 Capacity-building for agrivoltaics in Namibia: An evaluation of a training program
Berneiser, Jessica; Bingwa, Brendon; Hörnle, Oliver; Steinhüser, Andreas; Scholz, Frances
Vortrag
Presentation
2024 Schlüsselbausteine zur Entwicklung des künftigen Energiesystems
Henning, Hans-Martin
Vortrag
Presentation
2024 Photovoltaics at Fraunhofer ISE: Research, Transfer, Testing, and Recycling
Bett, Andreas W.
Vortrag
Presentation
2024 Development of Water-in-Oil Phase Change Slurries for Cold Transport and Storage Below 0 °C
Kick, Moritz; Lefkir, Chakib; Gschwander, Stefan
Konferenzbeitrag
Conference Paper
2024 Dezentrales vs. zentrales Lademanagement von Elektroautos im Quartier
Oberfeier, Paula; Surmann, Arne; Hain, Niklas; Rothenhäusler, Anna Christin; Groß, Arne; Köpfer, Benedikt; Kühnbach, Matthias
Konferenzbeitrag
Conference Paper
2024 Decarbonizing energy-intensive industries: Empirical insights into the aspirations for electrification and flexibilization of industrial processes
Berneiser, Jessica; Kucknat, Johanna; Fornefeld, Felicitas
Konferenzbeitrag
Conference Paper
2024 Gesellschaftliche Unterstützung für eine erfolgreiche Wärmewende
Gölz, Sebastian
Vortrag
Presentation
2024 System Integration for the Transformation of the Energy System
Wittwer, Christof
Vortrag
Presentation
2024 Flexibilitätsbeitrag verschiedener Technologien im deutschen Energiesystem bis 2045
Sepúlveda Schweiger, Jael; Jürgens, Patrick; Kost, Christoph; Gaafar, Nourelden
Konferenzbeitrag
Conference Paper
2024 Wasser-in-Öl-Dispersionen für Kälteanwendungen - Potentiale zur Kältespeicherung und -transport
Kick, Moritz; Gschwander, Stefan
Vortrag
Presentation
2024 Photovoltaik: Schlüssel für eine nachhaltige und resiliente Energiebereitstellung
Bett, Andreas W.
Vortrag
Presentation
2024 Learnings aus einem Leuchtturmprojekt der Energiewende - EnStadt:Pfaff
Kucknat, Johanna; Lastrico, Raffaello; Gölz, Sebastian
Vortrag
Presentation
2024 Vor-Ort-Lösungen für die Energiewende
Henning, Hans-Martin
Vortrag
Presentation
2024 Modelling system flexibility in the context of energy transition
Gaafar, Nourelden; Jürgens, Patrick; Sepúlveda Schweiger, Jael; Kost, Christoph
Vortrag
Presentation
2024 The relevance of social acceptance for agrivoltaic systems
Berneiser, Jessica
Vortrag
Presentation
2024 The Heating Market in Sector Coupled Energy Scenarios
Henning, Hans-Martin
Vortrag
Presentation
2024 Digital System Integration for the Energy System Transition
Wittwer, Christof
Vortrag
Presentation
2024 Gesellschaftliche Unterstützung für eine erfolgreiche Wärmewende - Die Wärmewende wirklich schaffen
Gölz, Sebastian
Vortrag
Presentation
2024 Flexibility provision in 5th gen district heating systems
Fröhlich, Erik; Steingrube, Annette; Öncel, Kerem
Vortrag
Presentation
2024 Pathways to a GHG-neutral German industry: Assessing the role of direct and indirect electrification and demand reduction
Kaiser, Markus; Senkpiel, Charlotte; Jürgens, Patrick; Kost, Christoph
Konferenzbeitrag
Conference Paper
2024 Neun Jahre Modellierungserfahrungen mit den technischen Anschlussregeln VDE-AR-N 41XX
Salman, Ammar; Grab, Robin; Hans, Franziska Alina; Rogalla, Sönke
Konferenzbeitrag
Conference Paper
2024 How effective are neighborhood talks to ensure the uptake of climate neutrality? On the challenges to ensure transformative capacity for PEDs
Kucknat, Johanna; Gölz, Sebastian
Vortrag
Presentation
2024 Model Predictive Control of a Heat Pump System Integrated with PVT Collectors and Ice Storage
Khamidov, Daler; Bavia Bampi, Bruno; Frison, Lilli; Nienborg, Björn
Konferenzbeitrag
Conference Paper
2024 Lust auf Zukunft - Energie für Zukunftschancen
Wittwer, Christof
Vortrag
Presentation
2023 Transformation des Energiesystems: Wie geht es voran im Wärme und Stromsektor?
Wittwer, Christof
Vortrag
Presentation
Diese Liste ist ein Auszug aus der Publikationsplattform Fraunhofer-Publica

This list has been generated from the publication platform Fraunhofer-Publica