KEMIWATT, founded in 2014 in Rennes, France, specializes in developing organic Redox Flow Batteries (AORFB) for sustainable energy storage solutions. The company creates innovative battery systems that integrate renewable energy sources into grids and microgrids. Since its establishment, KEMIWATT has achieved significant milestones, including the creation of the first organic redox battery prototype in 2016 and the launch of their initial industrial demonstrator in 2017. Their focus on environmentally responsible solutions uses biodegradable and recyclable organic molecules, setting new standards in energy storage technology.
Battery Technology
KEMIWATT’s primary innovation lies in their Aqueous Organic Redox Flow Batteries, which utilize organic molecules instead of traditional metal-based materials. The system employs potassium ferrocyanide and proprietary anthraquinone derivatives, offering enhanced environmental benefits and cost efficiency compared to conventional vanadium-based alternatives.
The technology operates in an alkaline environment, which significantly reduces corrosion risks and extends system lifespan. This design allows for flexible scaling, where energy capacity depends on electrolyte volume, while power output is determined by cell quantity. The batteries excel in safety features, with minimal thermal runaway risks and impressive cycling capabilities.
A notable advantage of KEMIWATT’s technology is its modular design, enabling customization for various applications. The system’s organic components are both biodegradable and recyclable, addressing environmental concerns while maintaining high performance standards. The batteries demonstrate particular effectiveness in renewable energy storage, grid services, and industrial applications.
Recent Projects
In their most recent development, KEMIWATT partnered with MANN+HUMMEL to create an advanced generation of Redox Flow Batteries. This collaboration incorporates MANN+HUMMEL’s PFAS-free Ion Exchange Membranes, enhancing the environmental profile of their storage solutions. The company also joined the Federation of European Tank Storage Associations (FETSA) as a supplier partner, expanding their presence in Europe’s bulk liquid storage sector.
Investors
KEMIWATT’s development has been supported by several prominent investors, including Demeter Ventures and GO Capital. The company successfully raised €4.4 million by 2018, with additional backing from SATT Ouest Valorisation. Pierre-Yves Divet, serving as a non-executive director since 2018, has also contributed to the company’s growth and development.
Business Details
Location: Rennes, France
Website: https://kemiwatt.com
LinkedIn: https://www.linkedin.com/company/26358961
