Driving innovation for
over a decade

What drives us

We believe in the future of electric drive systems: efficient, powerful, and seamlessly integrable. Since 2014, DEF has been developing electric machines for demanding applications in industry, mobility, and specialized sectors.

Our mission is to set new standards from the first concept to series production by leveraging cutting-edge technology, in-house manufacturing, and close collaboration with our customers. We combine deep engineering expertise with short innovation cycles, high vertical integration, and a strong focus on performance, sustainability, and system integration.

As a center of excellence for directly cooled machines, DEF offers solutions ranging from a few kilowatts to the megawatt class. Our patented capcooltech® hollow conductor cooling enables exceptionally high power density and reliable thermal stability, proven in applications such as aerospace, automotive, automation, and off-highway.

We pursue a clear vision: to make electric drives smarter, more compact, and more powerful than what seems possible today, using technologies that set new benchmarks.

Team

Behind our technologies stands an interdisciplinary team from development, design, and manufacturing. Together, we combine deep expertise with a commitment to creating high-quality solutions. What unites us is a passion for precise engineering and the drive to explore new paths together.
Photography: Tom Bauer

Our story

Since its founding in 2014, DEF has developed into a recognized technology partner for electric machines and drive systems. With increasing development depth, in-house manufacturing, and comprehensive testing infrastructure, DEF now creates powerful, individually configurable solutions for complex applications.

Since early 2024, DEF has had a second production facility in addition to its headquarters in Valley/Holzkirchen, an important step toward scaling up manufacturing and further expanding the use of capcooltech® hollow conductor cooling. The company's innovative strength has been recognized with several awards, including the German Innovation Award 2019 and the Handelsblatt Energy Award 2019.