Volterion was founded 2015 as a spin-off of the Fraunhofer Institute UMSICHT. The choice of location was deliberately made in favor of the Ruhr Metropolis, which is considered an ideal symbol for the energy transition. In keeping with the spirit of optimism associated with this, the development center was located in Dortmund, the European Capital of Innovation 2021.

From the beginning, the focus was on developing the perfect stack – the heart of all Flow battery storage systems.

With the acquisition of the majority shares by the Boysen Group in 2019, we have brought our preferred partner on board. As one of the fastest-growing suppliers to the international automotive industry, the Boysen Group with 25 locations worldwide gives us access to a global production network with a degree of automation of well over 90%.

Our Vision

To revolutionize the storage market and shape a more sustainable world through our innovative technology. We strive to be a leader in the design and implementation of advanced storage solutions that are not only efficient and reliable, but also actively contribute to environmental protection and improving the quality of life worldwide.

Dr. Thorsten Seipp

Thorsten Seipp · Founder and Managing Director

Founder and Managing Director

Renate Linek

Renate Linek · Commercial Director

Commercial Director

Kees van de Kerk

Kees van der Kerk · Business Development Manager

Business Development Manager

Our Mission

Our mission is to drive the energy transition and shape a sustainable future. With our expertise and innovative spirit, we are committed to developing clean and sustainable long-term energy storage systems.



  • ACHEMA Founder Award Energy
  • TU Startup Award


  • KUER Growing Business Award


  • EIT Climate-KIC European Cleantech Top 30


  • Joseph-von-Fraunhofer Price


  • German Innovation Award for Climate and Environment