Hervé BEUFFE
CEO

Tiamat Energy produces sodium‑ion battery cells that replace lithium‑ion chemistry, using abundant sodium‑based materials to avoid lithium and nickel supply constraints. The high‑power, thermally stable cylindrical and prismatic cells are designed for hybrid ICE/fuel‑cell vehicles, industrial equipment, UPS, data‑center, smart‑grid and fast‑charging applications, and will be manufactured at a planned gigafactory targeting 5 GWh annual output by 2030.
Raised to date
$2MRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.



Global battery production must increase dramatically by 2030, but lithium and nickel extraction capacities are insufficient, creating supply‑chain bottlenecks and geopolitical risk for lithium‑ion batteries.
Tiamat Energy commercializes sodium‑ion battery cells that avoid lithium and nickel, using abundant, low‑cost raw materials. The technology, derived from a decade of CNRS‑led research, delivers high power and safety suitable for hybrid ICE, fuel‑cell vehicles, UPS, data‑center, smart‑grid and fast‑charging applications. Tiamat plans a gigafactory near Amiens to produce an initial 5 GWh of first‑generation cylindrical and prismatic sodium‑ion cells by 2030. By substituting scarce critical minerals, the company reduces geostrategic exposure while providing a scalable alternative for power‑intensive sectors.
Primary customers are manufacturers of hybrid ICE and fuel‑cell vehicles, industrial equipment makers, data‑center operators, and smart‑grid or fast‑charging system providers requiring high‑power, low‑risk energy storage.