Fraunhofer Institute for Solar Energy Systems ISE

Integrated Photovoltaics – Areas for the Energy Transformation

Integrating PV technology into building envelopes, vehicles and roads, as well as over agricultural fields and floating on water surfaces, capitalizes on surface areas with a tremendous potential for generating solar power.

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Digitalization: The Enabler and Driver of the Energy Transition

In the future energy system, digitalization is key for decentralization and flexibility as well as achieving energy and resource efficiency.

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Photovoltaics is a central pillar of the future energy supply from both an economical and ecological point of view.

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Energy Efficient Buildings

Energy efficiency in buildings plays a central role in climate protection. Currently the building sector in Germany is responsible for over 40% of the final energy demand.

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Solar Thermal Power Plants and Industrial Processes

Already today, concentrating solar thermal power plants (CSP) coupled with large thermal storage units provide dispatchable renewable electricity. Such systems show great potential for industrial systems, increasing efficiency and allowing more flexibility in the energy flows.

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Hydrogen Technologies and Electrical Energy Storage

Our R&D services address the generation, conversion and further thermo-chemical processing of hydrogen. In electrical energy storage, we offer R&D along the entire value chain: from materials, through the cell and module up to the complete battery system.

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Power Electronics, Grids and Smart Systems

We are working to optimize the interplay between efficient renewable energy generation, the security of supply, energy storage and stable grid operation.

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R&D for Energy Transition

The Fraunhofer Institute for Solar Energy Systems ISE creates the technological foundations for supplying energy efficiently and on an environmentally sound basis in industrialized, threshold and developing countries. With its research focusing on energy conversion, energy efficiency, energy distribution and energy storage, it contributes to the broad application of new technology.

Fraunhofer ISE develops materials, components, systems and processes in five business areas. In addition to its R&D, the institute offers testing and certification procedures. Furthermore, it features an excellent laboratory infrastructure and is certified according to the quality management standard, DIN EN ISO 9001:2015. Founded in 1981, Fraunhofer ISE, with a staff of over 1200, is the largest solar research institute in Europe.

Film Portrait

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Language: English | Length: 6:29 Min.

Current Press Releases


Press Release #28 / 14.11.2019

First International Conference on Agrophotovoltaics in August 2020

The first international conference on APV systems AgriVoltaics2020 will take place in Perpignan, France from August 26-28, 2020 under the motto “Launching Agrivoltaics World Wide.”


Press Release #27 / 22.10.2019

Heat Pumps with Climate-Friendly Refrigerant Developed for Indoor Installation

Researchers at Fraunhofer ISE have developed a climate-friendly heat pump which uses propane, a natural gas. The greenhouse gas potential is about 500 times less than conventional refrigerants and thus extremely low. 


Press Release #22 / 29.8.2019

Fraunhofer ISE’s PV-TEC Pioneers New Technologies and Improves Solar Cell Efficiency

From industry-driven solar cells with efficiency values of more than 22 percent to effective new metallization processes for contacting solar cells — the PV-TEC at the Fraunhofer ISE in Freiburg has enjoyed numerous technological successes. 


Press Release #18 / 4.7.2019

Utilizing Surfaces: Fraunhofer ISE to Present Integrated Photovoltaic Solutions at the EU PVSEC

From September 9 to 13, the Fraunhofer ISE will be at the EU PVSEC in Marseille (booth F 5) to introduce ideas and technologies for the successful integration of photovoltaics into the built environment.

News and Events

SiliconPV 2020

Hangzhou , China / 03/30/2020 - 04/03/2020

HPC 2020 – IEA Heat Pump Conference

Jeju Island, South Korea / 05/11/2020 - 05/14/2020


Public Net Electricity Generation in Germany 2019: Share from Renewables Exceeds Fossil Fuels

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE have presented the newest figures on the annual electricity generation in Germany. The share of renewables in the net electricity generation, that is, the amount coming from the socket, rose from 40.6 percent in 2018 to 46 percent in 2019, and surpassed the share from fossil fuels (40 percent) for the first time.
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International Energy Workshop 2020: Call for Papers

The 39th edition of the International Energy Workshop (IEW) will take place from June 29 to July 1, 2020 in Freiburg, Germany and will be hosted by the Fraunhofer Institute for Solar Energy ISE. The IEW is a leading conference for the international energy modeling community. In a world of environmental and economic constraints, energy modeling is an increasingly important tool for addressing the complexity of energy planning and policy making. The IEW provides a venue for scholars and researchers to compare modeling tools, to discuss modeling advances for emerging energy sector issues, and to observe new trends in the global energy sector.
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Christopher Hebling Conferred Honorary Professor by the University of Cape Town

Christopher Hebling, division director of Hydrogen Technologies at the Fraunhofer Institute of Solar Energy Systems ISE, was appointed Honorary Professor of Chemical Engineering in the Faculty of Engineering and the Built Environment at the University of Cape Town (UCT) in South Africa. Besides research and teaching, Hebling will promote the cooperation between the Fraunhofer-Gesellschaft and the South African scientific community in the fields of hydrogen and solar technologies.
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Fraunhofer ISE and CSET at Solar World Congress in Chile

The first Solar World Congress in South America takes place in Santiago de Chile from November 4 to 7, 2019. The Congress will be held by the International Solar Energy Society (ISES) together with the International Conference on Solar Heating and Cooling for Buildings and Industry of the IEA (International Energy Agency) Solar Heating and Cooling Programme (SHC). The local host is SERC-Chile (Solar Energy Research Center), a consortium of seven Chilean Universities, as well as the Fraunhofer-Chile Foundation. The Fraunhofer Institute for Solar Energy Systems ISE and the Center of Solar Energy Technologies-Fraunhofer Chile Research (FCR-CSET) participate in the congress with a booth and presentations by its experts.
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Scientific Blog of Fraunhofer ISE


We want to share our expertise with you. The scientific blog of Fraunhofer ISE  »Innovation4E« offers a platform for information and exchange.

New Articles on Innovation4E:


“LiteFCBike”: Biking with a Fuel Cell

The LiteFCBike uses a fuel cell for the drive and thus differs from conventional e-bikes. Every bike can be retrofitted.   This year at the Hannover Trade Fair 2019, a system prototype for upgrading a conventional bike into an electric bike was presented for the first time. The special feature of this system is that a [...]
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New Film Portrait of Fraunhofer ISE

In Fraunhofer ISE’s new film portrait, the two institute directors, Prof. Hans-Martin Henning and Dr. Andreas Bett, present an overview of the current work at the research institute. “R&D for Energy Transition” – This motto of the Fraunhofer Institute of Solar Energy Systems ISE has many facets. Located in Freiburg, Europe’s largest solar research institute [...]
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Digital Tool for the Electricity Grid: Forecasting Model to Determine the Power Output of PV Modules

As part of a research project, Dr. Sven Killinger developed a forecasting model that provides grid operators with data on the power output of PV systems in real-time. In the interview, he explains how it works. The cover of the Fraunhofer ISE’s newly released annual report shows a satellite image of a city with various [...]
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Net Electricity Production in Germany: How has it developed in the past ten years?

With a single glance, small changes often go unnoticed. Over a long period of time, however, many small changes can add up to make an enormous difference. Using the Fraunhofer ISE Energy Charts, we decreased the zoom factor and thus were able to compare the net electricity generation of the past ten years, from 2009 [...]
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