Fraunhofer Institute for Solar Energy Systems ISE

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 #18 / 4.7.2019

Power Electronics for the Energy Transformation

On July 4, 2019, the Fraunhofer Institute for Solar Energy Systems ISE in Freiburg officially inaugurates its new Center for Power Electronics and Sustainable Grids. With a propriety connection to the 110 kV high-voltage grid and 40 MVA transformer, the new center offers a worldwide unique research infrastructure.


Press Release #16 / 3.6.2019

Photovoltaics – Game Changer in the Global Energy System

Leading international PV researchers gathered by the Global Alliance for Solar Energy Research Institutes describe the key points of the future developments in an article which appeared on May 31, 2019 in »Science«.


Press Release #14 / 21.5.2019

New Photovoltaic Production Factories in Europe Are Possible

In a panel discussion at the Intersolar Europe in Munich, experts from industry, research and associations addressed the exciting question “Would a PV factory in Germany/ Europe be realistic?” The chances and possibilities of re-establishing a photovoltaic production in Germany and Europe were discussed.


Press Release #11 / 8.5.2019

Fraunhofer ISE Showcases Shingle Solar Cells, Integrated Photovoltaics, Power Electronics, Solar Forecasting and Battery Technology at Intersolar Europe

Completing the institute’s range of services at the leading exhibition for solar technology will be numerous presentations and workshops as part of the accompanying program and the conferences hosted by Intersolar Europe and EES.

News and Events

ICR 2019 - 25th IIR International Congress of Refrigeration

Montreal, Canada / 08/24/2019 - 08/30/2019

16th IAEE European Conference

Ljubljana, Slowenia / 08/25/2019 - 08/28/2019


PV Nano Cell Ltd. and Fraunhofer ISE Present Results of Joint Metallization Technology Development

PV Nano Cell Ltd., the developer of Sicrys™ conductive inks based on single crystal nano-particles of silver and copper, and the Fraunhofer Institute for Solar Energy Systems ISE announced remarkable results using the ink in the development of innovative metallization technologies for solar cells with Inkjet and Rotational Printing.
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Ultrathin Solar Cells Reach Nearly 20% Efficiency – “Nature Energy” Publishes Paper by Centre de Nano-Sciences et de Nanotechnologies and Fraunhofer ISE

Researchers at the French Centre de Nanosciences et de Nanotechnologies (C2N) have succeeded, in collaboration with researchers at Fraunhofer ISE and others, to efficiently trap sunlight in a solar cell thanks to an ultrathin absorbing layer made of 205 nm-thick gallium arsenide (GaAs) on a nanostructured back mirror. With this new process of fabrication, an efficiency of nearly 20% was obtained.
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Fraunhofer ISE and Fraunhofer CSET Enter Second Round for the Chilean Institute for Clean Energy Technologies

The Fraunhofer ISE, the Fraunhofer CSET and the CSIRO Mining Center in Santiago de Chile have successfully passed the first proposal round for the new Chilean institute for clean energy technologies.
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Analyzing Bifacial Modules under Realistic Conditions

The Fraunhofer Institute for Solar Energy Systems ISE in Freiburg implemented new analytic models into the software SmartCalc.CTM which simulates the losses and gains in power output due to cell-to-module (CTM) integration. Significantly extended features now include the analysis of solar modules with bifacial solar cells and the freedom to define arbitrary operation conditions. SmartCalc.CTM now supports module optimization beyond laboratory conditions for an even greater variety of technologies.
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16th IPSA International Conference and Exhibition, Building Simulation 2019

Rome, Italy / 09/02/2019 - 09/04/2019

CISBAT 2019 – International Scientific Conference

Lausanne, Switzerland / 09/04/2019 - 09/06/2019


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:


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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Fraunhofer CSET: Research for the Energy Transition in Chile – Part 2

In the second part of the blog post about the Fraunhofer CSET in Santiago de Chile, we look at current research projects and present services offered for the Chilean market. In February 2018, the CSET was taken over and further developed by Frank Dinter as Managing Director. The CSET has two major lines of research: [...]
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