Elestor develops hydrogen–bromine flow batteries intended for long-duration energy storage (LDES). Its technology uses hydrogen and bromine as active materials and produces hydrogen during charging, enabling integration with hydrogen infrastructures and electrolysers. The company positions the batteries as a reliable, scalable and cost-effective way to store renewable solar and wind power and to link battery-based and hydrogen-based storage systems. Founded in 2014 and based in the Netherlands, Elestor intends to commercialise its proven technology and expand production toward a GW-scale manufacturing facility. The company raised €30M in a fresh funding round to execute an ultra-rapid growth strategy, expand production capacity and manage its supply chain. Management cited in the articles includes CEO Guido Dalessi and COO Hylke van Bennekom, who joined in April 2021 through an MBI, and Deloitte Corporate Finance acted as Elestor’s exclusive advisor for the raise. Elestor is an Arnhem-based startup developing a hydrogen‑bromine (HBr) flow battery aimed at low-cost, large-scale stationary electricity storage. The company says the battery uses very low-cost active materials, enabling impressively low storage costs per kWh. Elestor is preparing a commercial launch and intends to enter a steep growth phase, increasing investment in staff, test facilities, production engineering and automation ahead of series production. Management has identified building a giga-factory for large-scale HBr flow battery production as the logical next step. The latest funding comes alongside increased capital from early investor EIT InnoEnergy. Near-term deployment plans include a first hydrogen container to Emmeloord (Netherlands), two systems to Germany and one to an island off the Norwegian coast. In 2017 Elestor won the European IDTechEx award for Best Technical Development within Energy Storage.

Total raised

$30M

Funding rounds

2

Latest round

Equity

Latest activity

Aug 2022