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  • In a joint research effort, scientists from the University of Ottawa, the National Research Council Canada NRC and Fraunhofer Institute for Solar Energy Systems ISE developed photonic power converters which convert 1446 nanometer laser light into electrical power with unprecedented 53.6 percent efficiency and an output voltage above 2 volts. These advancements pave the way for long-distance power transmission via optical fibers, for example in telecommunications, as well as free space applications. The results have recently been published open access in Cell Reports Physical Science.

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  • In the course of the energy transition, the proportion of converter-based generation plants in the electricity grid is increasing rapidly, while conventional power plants are being taken off the grid at the same time. In the “SUREVIVE” project, a consortium from research and the energy industry is investigating for the first time in the German distribution grid how grid-forming inverters and a large battery storage system can stabilize the electricity grid. In preparation for the field test, the Fraunhofer Institute for Solar Energy Systems ISE is testing the systems in its multi-megawatt laboratory.

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  • The groundbreaking ceremony on July 22, 2025 marked the start of construction for the Engineering Center for Sustainability (Ingenieurzentrum Nachhaltigkeit – IZN) on Freiburg’s airport campus. The new building will foster closer collaboration between Freiburg’s five Fraunhofer institutes and the University of Freiburg under the umbrella of the Department of Sustainable Systems Engineering (INATECH).

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  • Anup Premaraj Kamath, Research assistant at the Fraunhofer Institute for Solar Energy Systems ISE and master’s student at Albert-Ludwigs-Universität Freiburg, received the 1st “Bruno Scrosati Award” for his outstanding approach to the field of electrochemistry and energy storage. The award for international master’s students enrolled at a non-Italian university is in honor of late Prof. Bruno Scrosati, a pioneer in the early development of Lithium-ion batteries.

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  • Researchers at the Fraunhofer Institute for Solar Energy Systems ISE have succeeded in developing solar cells based on III-V semiconductors that can achieve an efficiency of over 40 percent indoors. By the optimized design and improved quality of the solar cell absorber material , the research team achieved remarkably high efficiencies even under very low light conditions of just 100 lux. This result makes this technology particularly attractive for autonomous Internet of Things (IoT) applications that operate indoors without an external wired power supply. The findings were published in the journal Applied Physics Letters.

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Sophia Bächle

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Sophia Bächle

Communications
Photovoltaics

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5215

Claudia Hanisch

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Claudia Hanisch

Communications
Energy Technology and Systems

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5448

Tobias Mickler

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Tobias Mickler

Communications
Heat and Buildings

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588 2370