Sinergy Flow

Sinergy Flow, a Milan-based deep-tech entity established in 2022, is focused on developing and commercializing a novel redox flow battery to address the growing need for long-duration energy storage. The company's genesis stems from the doctoral research of CEO Alessandra Accogli at Politecnico di Milano, where she, along with co-founders Gabriele Panzeri (CTO) and Matteo Salerno (COO/CSO), developed a new battery chemistry. This foundational work led to their success in the Switch2Product Challenge, which marked the beginning of their startup journey. The founding team's academic background in materials engineering and nanotechnologies from Politecnico di Milano directly informs the company's scientific direction.

The firm operates in the energy storage market, specifically targeting the grid-scale segment where long-duration storage (over 10 hours) is critical for integrating intermittent renewable energy sources like solar and wind. Sinergy Flow's business model centers on the production and sale of these battery systems. The core of its offering is a zinc-polysulfide flow battery that utilizes sulfur, a low-cost and abundant byproduct of the petrochemical industry, and zinc. This approach deliberately avoids the use of expensive and geopolitically sensitive materials like vanadium, which are common in other flow batteries, thereby aiming for a significantly lower cost structure.

The technology is designed to be modular and scalable, allowing for a customizable energy-to-power ratio to meet specific grid requirements. Key benefits of this technology include high energy efficiency, estimated between 70-85%, and adherence to circular economy principles by repurposing industrial waste materials. By providing a cost-effective and sustainable solution, Sinergy Flow aims to enable a higher penetration of renewables into the electrical grid, contributing to decarbonization efforts. In November 2022, the company secured a significant milestone with a €1.8 million seed funding round led by 360 Capital and CDP Venture Capital, which is being used to expand the team, advance research and development, and scale up the technology for mass production.

Keywords: long-duration energy storage, redox flow battery, grid-scale storage, zinc-polysulfide battery, sulfur battery, circular economy, energy transition, renewable energy integration, deep-tech, energy storage systems, stationary energy storage, sustainable battery, grid modernization, clean energy, materials science, Politecnico di Milano, decarbonization, electrochemical energy storage, battery technology, utility-scale storage