Achim Denkel

sonnen GmbH develops lithium storage systems and battery technologies. It specializes in the design of lithium storage systems and renewable energy development technologies. The firm engages in research and development investment projects focused on the production of power battery storage solutions. The company was founded by Christoph Ostermann and Torsten Stiefenhofer in April 2010 and is headquartered in Wildpoldsried, Germany.

JuViQu GmbH is an investment holding German company. The private company is based in Hamburg, Germany. The CEO of the company is Philipp Schröder.

1komma5° GmbH is a German Hamburg-based company founded in 2021 by Jannik Schall, Micha Grüber, Philip Liesenfeld, Philipp Schröder, and Michael H. Hinderer. The company is based in Hamburg, Germany, and has subsidiaries in Sweden and Germany. The company provides carbon-neutral home energy solutions, including solar systems, heat pumps, wallboxes, and energy storage, all connected to a smart energy system. The company offers a "One-Stop-Shop" for klimaneutrale Energiesysteme, providing tailored solutions for zero-impact power supply. Philipp Schröder has been the CEO since 2021.