Seed · Energy · Marseille, France · Founded 2023 · 51–200 employees
HEXANA is a spin-off of the French Alternative Energies and Atomic Energy Commission (CEA) designing an innovative 4th-generation modular energy platform. The system integrates sodium-cooled fast-neutron small modular reactors (SMRs) with a molten-salt thermal energy storage unit. The platform is designed to provide highly flexible, cost-competitive, and low-carbon high-temperature heat up to 500 °C as well as electricity. The startup targets the decarbonization of energy-intensive heavy industries like steel, chemistry, and e-fuels. To accelerate development, the company secured a 15 million EUR seed extension in February 2026, bringing its total private equity funding to 30 million EUR.