Fraunhofer Institute for Solar Energy Systems ISE


Photovoltaic technology is an essential component to transform today’s carbon-based energy system into one with its foundations in renewable and sustainable energy sources.

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Solar Thermal Technology

For the transformation of the thermal energy systems, solar thermal energy is a central component alongside energy efficiency.

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Building Energy Technology

More than 40 % of the end energy demand in most industrial countries is caused by the building sector, thus it has a major role to play in reaching the targets for climate protection.

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Hydrogen Technologies

Hydrogen, produced by electrolysis using electricity from renewable energy sources, can be used according to need across many sectors for a variety of applications; for example, in the sustainable mobility sector for fuel cell vehicles, etc.

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Energy System Technology

Energy system technology, which optimizes the interaction between generators, consumers and their control and addresses the management of energy distribution and storage, is one of the most important areas needing work for the energy transformation.

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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 9001:2008. Founded in 1981, Fraunhofer ISE, with a staff of 1150, is the largest solar research institute in Europe.

Current Press Releases


Press Release #20 / 23.11.2017

Harvesting the Sun for Power and Produce

Agrophotovoltaics Increases the Land Use Efficiency by over 60 Percent

Until now, acreage was designated for either photovoltaics or photosynthesis, that is, to generate electricity or grow crops. An agrophotovoltaics (APV) pilot project near Lake Constance, however, has now demonstrated that both uses are compatible.


Press Release #19 / 24.10.2017

VDE Renewables, Fraunhofer ISE, ERI@N launch global initiative for energy storage at the Asia Clean Energy Summit in Singapore

The VDE Global Energy Storage Competence Cluster will serve the international cleantech sector along the entire value chain and features VDE Prime Labs in Singapore, Germany and the USA. 


Press Release #18 / 4.10.2017

Center for High-Efficiency Solar Cells – Cornerstone laid for a new laboratory building at Fraunhofer ISE

The cornerstone of a new building with a clean room equipped to handle the latest technological challenges was laid on October 4, 2017 in Freiburg.


Press Release #17 / 26.9.2017

International Intercomparison of PV Modules Reaffirms Measurement Precision of the CalLab PV Modules

At 1.3 percent measurement precision, the accredited calibration laboratory of the Fraunhofer Institute for Solar Energy Systems ISE achieved a record value.

News and Events


Fraunhofer ISE Spin-off NexWafe GmbH Closes EUR 8 Million Financing

NexWafe GmbH is commercializing a technology developed at Fraunhofer ISE for epitaxial fabrication of silicon wafers for photovoltaics. Today the company the completion of Euro 8 million financing. The round was led by Saudi Aramco Energy Ventures (SAEV) and included Green Gateway Fund 2 (GGF2) advised by Wermuth Asset Management GmbH (WAM) and existing investor Lynwood (Schweiz) AG. Funds will be used for the commissioning of NexWafe’s 5MW wafer production line in Freiburg, and for initial customer qualifications.

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Fraunhofer ISE Record Solar Cell Nominated for GreenTec Award 2018

This year the Fraunhofer Institute for Solar Energy Systems ISE premiered a multi-junction solar cell made of III-V and silicon semiconductor materials. The novel solar cell converts a record 31.3 percent of sunlight into electricity. To compare, the best silicon solar cell has an efficiency of 26.7 %. As of today, the project is in the race for the GreenTec Award 2018.

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Start-up Blue Inductive Wins Business Plan Competition

In this year’s business plan competition “CyberOne Hightech Award Baden-Wuerttemberg 2017,” the Freiburg start-up Blue Inductive was awarded first prize in the area of industrial technology. The prize is endowed with 10,000 euros. Founded in 2016 as a spin-off company of the Fraunhofer Institute for Solar Energy Systems, the start-up develops wireless charging systems for batteries in mobile transport systems.

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Fraunhofer ISE Investigates Power Supply Concept for Mobile Data Centers

Mining cryptocoins requires an inexpensive energy supply. To this end, the Fraunhofer Institute for Solar Energy Systems ISE is investigating possible energy supply concepts for the mobile data centers in the German energy system.

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E-World energy & water

Essen, Germany / 02/05/2018 - 02/08/2018


9th International Rechargeable Battery Expo (Battery Japan)

Tokyo, Japan / 02/28/2018 - 03/02/2018

International Renewable Energy Storage Conference (IRES 2018)

Düsseldorf / 03/13/2018 - 03/15/2018

8th SiliconPV

International Conference on Crystalline Silicon Photovoltaics

Lausanne, Switzerland / 03/19/2018 - 03/21/2018


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:


Design Meets Efficiency – Innovative Coating for Colored Photovoltaic Modules

The global photovoltaic market is growing rapidly. While the optimization of the efficiency, service life and price has been the main focus of solar module development up to now, the appearance of solar modules is now gaining more and more attention. A new type of coating process promises new color variety for solar modules, while […]

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Agrophotovoltaics: Harvesting the Sun for Power and Produce

An old German saying says that the dumbest farmer produces the biggest potatoes. Today we can say in contrast that the clever farmer harvests solar electricity.  In Germany, solar electricity is about ten times more profitable than growing crops. When the first open-space photovoltaic plants were installed on arable land, a hot debate arose: Valuable […]

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Episode 03: An Espresso with… SOLAR-TRAIN scholars

In our series “An Espresso with …” we regularly carry out interviews with engaging people from the field of renewable energy. In this episode we welcomed three young scientists at our coffeetable. Ismail Kaaya, Djamel Mansour and Amantin-Panos Mehilli are scholars of the EU Horizon 2020 research project “SOLAR-TRAIN“. They reported on their initial experience […]

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Photovoltaics – the ordinary madness

SolarWorld is only the latest bankrupt PV manufacturer in Germany. Many now wonder: What is the matter with photovoltaics in Germany and what is next? When trying to answer these questions, we have to look at three sectors: Politics, economy and technology. In the technical and economic sector, photovoltaics (PV) is on a triumphal march […]

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