Allegro Energy

Allegro Energy manufactures long-duration energy storage solutions using proprietary water-based microemulsion electrolyte technology that combines water, oil, and surfactant for electrochemical stability at a fraction of conventional cost. The technology uses abundant, globally available raw materials, is inherently non-flammable, and is 100% recyclable. Allegro serves utilities, renewable developers, mining operations, data centers, and community energy projects. The company's first commercial pilot deploys at Australia's largest coal-fired power station (Eraring), and its pilot manufacturing facility in Newcastle demonstrates locally-made, export-ready technology. Founded in 2021 and headquartered in Newcastle, Australia, the company has raised approximately $16.1M in Series A funding. Allegro differentiates itself through significant cost reduction compared to other flow battery providers, true long-duration capacity scalable by design, and circular chemistry with a clean end-of-life pathway, built locally using abundant commodity materials.