What does Elestor do?

Dutch energy storage company developing hydrogen-bromine flow batteries for long-duration grid energy storage. Offers scalable, affordable technology with 80% efficiency and 25-year lifespan, positioning flow batteries as replacements for fossil fuel power plants.

Where is Elestor located?

Elestor is headquartered in Utrecht, Netherlands.

What energy sectors does Elestor operate in?

Elestor operates in Energy Storage, Hydrogen.

How many employees does Elestor have?

Elestor has approximately 50-200 employees.

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Elestor

Utrecht, Netherlands

Energy StorageHydrogenPrivate

Founded 201450-200 employees

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About

Founded in 2014, Elestor is a private headquartered in Utrecht, Netherlands with approximately 50-200 employees specializing in Energy Storage, Hydrogen.

Elestor was founded in 2014 by Wiebrand Kout to develop large-scale, ultra-low-cost electricity storage solutions. The company specializes in hydrogen-bromine (HBr) and hydrogen-iron flow battery technologies designed for long-duration energy storage (8-100 hours). The technology leverages globally abundant chemical elements, enabling cost-effective scaling and grid stabilization. Elestor received €22 million in funding from the Dutch National Growth Fund for the SLDBatt project. The company positions flow batteries as strategic infrastructure to replace fossil fuel power plants and enable full renewable energy integration. Leadership includes CEO Hylke van Bennekom (appointed January 2025), Founder & CTO Wiebrand Kout, and CFO Pieter Pijper (appointed August 2023).

flow batteryhydrogen-brominelong-duration storagegrid stabilityenergy transitiondecarbonization

Headquarters

Utrecht, Netherlands

Founded

2014

Employees

50-200

Company Type

Private