Fraunhofer Institute for Solar Energy Systems ISE

PV Research and Production in Europe

The coalition ‘Solar Europe Now’ is calling for the recognition of solar energy as a key driver to deliver on the European Green Deal ambitions.

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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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Dear customers, project partners, sponsors and friends,

The COVID-19 pandemic presents us with great challenges and requires all of us to act responsibly. With this letter, we would like to inform you about the present situation at Fraunhofer ISE and our continued cooperation with you.

Our overriding priority is protecting the health of society in general. Therefore, we strictly adhere to the official regulations set down on the city, state and federal levels and the guidelines of the Fraunhofer-Gesellschaft. In addition, we are implementing measures specific to Fraunhofer ISE.

In spite of the restrictions resulting from these regulations, Fraunhofer ISE continues to operate as far as possible. Your projects will still be worked on, our research and development activities in the laboratories will continue and our services are still available. In accordance with the official regulations laid down by the authorities, visitors and business trips have been limited to the very minimum. Many of our employees are now working from home and are using modern, digital tools to ensure the further cooperation with you. Our employees are reachable by telephone to a limited extent; however, you can always reach them via email. If you have difficulties reaching your contact person at Fraunhofer ISE, please call our main telephone number: +49 761 4588 0

If the dynamics of the situation make other decisions mandatory, we will communicate this to you via this website.

Thank you for your cooperation and take care!

Warm regards,

Prof. Dr. Hans-Martin Henning
Prof. Dr. Andreas Bett

Institute Directors Fraunhofer ISE

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.

Current Press Releases


Press Release #10 / 8.5.2020

Fraunhofer ISE’s CalLab PV Modules Improves Measurement Uncertainty to Record Value of 1.1 %

CalLab PV Modules of the Fraunhofer ISE has been re-accredited by the German Accreditation Body (DAkkS) as an independent calibration laboratory according to the new standard DIN EN ISO/IEC 17025: 2018. 


Press Release #9 / 7.5.2020

A Glimpse into Real-Time Methanol Synthesis: Dynamic Operation of a Miniplant at Fraunhofer ISE

As part of the "Power-to-Methanol – Green Methanol" project, the Fraunhofer ISE successfully commissioned a miniplant for methanol synthesis –the production of methanol from hydrogen and CO2.


Press Release #8 / 5.5.2020

The European Solar Value Chain Raises Concerns over Lack of Positive Signals for the Industry in the Green Deal

The coalition ‘Solar Europe Now’, which has been officially launched today, is calling for the recognition of solar energy as a key driver to deliver on the European Green Deal ambitions.


Press Release #7 / 3.4.2020

Lade-PV Project Begins: Vehicle-integrated PV for Electrical Commercial Vehicles

In the “Lade-PV” project under the direction of the Fraunhofer Institute for Solar Energy Systems ISE, four industrial companies and two Fraunhofer institutes want to demonstrate the market feasibility of PV applications in the heavy-load transport. 

Film Portrait

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Language: English | Length: 6:29 Min.

News and Events


Trade Fairs, Conferences and Workshops


power4re: Research Project to Increase Converter Reliability Starts

Durable converters that are insensitive to environmental influences are an indispensable technological component of the energy transformation with a high economic potential. In the research project "power4re" (reliable converters for the renewable energy supply), five Fraunhofer Institutes under the leadership of the Fraunhofer Institute for Wind Energy Systems IWES are working together with industry representatives on solutions to increase the reliability and robustness of inverters in PV systems and frequency converters in wind turbines. The power4re project is being funded within the framework of the internal research program PREPARE of the Fraunhofer-Gesellschaft with funds totaling 3.5 million euros.
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EPFL and Fraunhofer ISE offer free webinar on module reliability

The École Polytechnique Fédérale de Lausanne EPFL (Switzerland) and the Fraunhofer Institute for Solar Energy Systems ISE (Germany) are organizing a free webinar as compensation the SOPHIA workshop on PV Module Reliability, which was to be held this year yet was postponed due to the Corona pandemic. The presentations on May 28th and 29th will highlight expert results and experiences on the topics of reliability and degradation as well as testing innovative PV applications. Additionally a comprehensive overview of the results from the EU MSCA project Solar-Train will be given.
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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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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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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.