1st Flow Energy Solutions specializes in vanadium redox flow batteries (VRFBs) that use vanadium ions in four oxidation states within a liquid electrolyte, which is non-flammable and non-explosive. Their proprietary Directed Flow Field (DFF) technology enhances power density, longevity, and reduces costs. The system’s modular design allows scalable power and capacity by separating electrolyte tanks and cell stacks. The batteries have a lifespan of over 20,000 cycles. Vanadium is sourced sustainably as an iron production by-product, and their systems include open-source energy management integration. Battery stacks are in fifth to seventh-generation designs for improved efficiency and power output.
1st Flow Energy Solutions produces VRFB systems with scalable power and capacity. Specific product features include a modular design of electrolyte tanks and cell stacks, safety due to non-flammable electrolyte, and advanced Directed Flow Field technology. Battery stacks are progressing through advanced generations, enhancing performance and efficiency.
In 2023, 1st Flow implemented a VRFB system at Knoll Energy’s “Car Park of the Future” in Umkirch, Germany. This system delivers up to 50 kW power and 300 kWh capacity, integrated with a 25 kWp solar installation, demonstrating application in buffer storage for electric vehicle charging stations and renewable energy management in commercial environments.
Storion Energy Inc., a U.S.-based company with over 20 years of VRFB technology experience, provided initial funding and technical support during 1st Flow’s early development stages.
