Seed · Energy · Milan, Italy · Founded 2022 · 10–20 employees
Sinergy Flow is a DeepTech startup developing sustainable and low-cost redox flow batteries for long-duration energy storage using sulfur-based waste materials from petrochemical industries. The company's innovative approach reduces battery costs up to 30 times compared to current market solutions while adhering to circular economy principles. In February 2026, they raised €7 million in seed funding led by CDP Venture Capital SGR, following their earlier €1.8 million round in 2022. The company has won multiple prestigious awards including the National Award for Innovation 2021 and has received recognition from ENI Awards 2022.
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