LE System

About LE System

LE System is a Japanese company specializing in the development, manufacturing, and sale of electrolytes for vanadium redox flow batteries (VRFB). The company's core focus is on addressing the cost and stable supply challenges of VRFBs, which are recognized for their suitability for large-capacity, long-duration energy storage. This makes them a key component in stabilizing power grids that are increasingly reliant on intermittent renewable energy sources like solar and wind.

The original LE System was founded in January 2011 and established a reputation as a pioneer in the Japanese VRFB electrolyte market. A significant development occurred in October 2023 when RS Technologies, a company listed on the Tokyo Stock Exchange, established a new entity also named LE System Co., Ltd. This new company took over the business of the original LE System through a company split, with RS Technologies becoming the principal shareholder. The current CEO is Nagayoshi Ho. The company operates a head office in Tokyo, a Tsukuba Technical Center for research and pilot production, and the Namie Plant for mass production of electrolytes.

LE System's primary technological advantage lies in its proprietary methods for producing vanadium electrolyte. It has developed technology to recover vanadium from industrial waste at a low cost, tackling the price volatility of the raw material which has historically hindered the wider adoption of VRFB technology. The company’s business model revolves around the mass production and supply of this cost-effective electrolyte to battery manufacturers and energy projects. Vanadium redox flow batteries offer distinct advantages over lithium-ion batteries, particularly in terms of safety, long operational life, and design flexibility for large-scale applications. While difficult to miniaturize, their structure allows for safe, long-term charging and discharging capabilities, making them ideal for grid-scale energy storage.