Elestor

The company is focused on commercializing its hydrogen bromine (HBr) flow battery, a technology designed for grid-scale applications to support the integration of renewable energy sources like wind and solar. Unlike conventional batteries, Elestor's flow battery decouples power (MW) and energy capacity (MWh), allowing for highly modular and cost-effective scaling for long-duration storage (from 8 to 150 hours). The system utilizes hydrogen and bromine, materials that are abundantly available and significantly cheaper than those used in other battery chemistries, driving down the levelized cost of storage. This makes it economically viable for clients such as utility companies and grid operators to store surplus renewable energy and dispatch it during periods of low generation, stabilizing the grid and replacing the need for fossil-fuel power plants.

A distinct feature of Elestor's technology is its ability to integrate with hydrogen infrastructures. During the charging process, the battery generates hydrogen, which can be stored. This allows for synergy with electrolyzers, enabling them to operate more continuously using low-cost stored electricity, thereby reducing the production cost of green hydrogen. The company has secured significant milestones, including a €30 million Series A funding round in 2022, led by Equinor Ventures and co-led by Invest-NL, with participation from Royal Vopak and others. This capital is being used to accelerate commercialization and scale up to a gigawatt-scale production facility. Elestor has already signed a commercial contract with Royal Vopak to build its first commercial-scale system.