2021: Industrial scale

In April 2021, Elestor entered a Joint Development Agreement (JDA) with Royal Vopak, world’s leading independent tank storage company specialized in storage of chemicals and gasses. Under his agreement Elestor and Vopak will jointly bring the Elestor technology to industrial scale, up to 10s of MW and 100s of MWh.

See also: https://www.elestor.nl/elestor-enters-cooperation-with-vopak-for-scaling-hbr-flow-battery-technology/

2018: Projects

In 2018, Elestor started the design of storage systems on container size under a number of regional / national / EU programs. Elestor is currently completing these projects, prior to commercial launch of the technology in 2021.

One of the upcoming installations takes place under the GIFT project (an acronym for ‘Geographical Islands FlexibiliTy’). In this project an Elestor flow battery is installed on a Norwegian island, located near the arctic circle.

Scroll down to ‘Projects’ for further details on finalized and ongoing projects.

2016: Pilots

Starting November 2016, Elestor successfully carried out a handful of field pilots, working under real conditions and connected to renewable energy sources and the grid, though with limited powers and capacities. Due to its working principle, a large system is only ‘more of the same’, but fundamentally not different from a small system. This allowed Elestor to start field tests on a limited scale, while the results are still representative for large systems.

The purpose of these pilots was to demonstrate proper functioning under real circumstances, and secondly to investigate and obtain formal approval from the notified bodies to install this innovative technology. The pilots, each running for 6 to 12 months, have all been finalized.



The goal of this project is to arrange the basis for a scalable energy storage system based on the Hydrogen Bromine Flow Battery principles together with belonging external control and an energy management system on a pilot location. The concept shall enable more sustainable energy systems in the build environment (houses or neighbourhoods).

Project partners: • Witteveen+Bos • TNO • HAN • Stichting Pioniers van de Toekomst • ZON Energie • Gemeentewerf Emmeloord

This project receives funding from the Netherlands Enterprise Agency RVO under the TKI Urban Energy program with grant number TEUE116904

Cleantech Energy Crossing (CEC) – FINALIZED

The CEC project consists of several work-packages and Elestor is active in work package (WP) 3, micro-grid storage (other work packages are ‘sustainable heating & cooling’ and ‘batteries at homes’). Within WP3 Elestor will provide a Hydrogen Bromine Flow Battery to work together with decentral energy sources, smart energy management systems and a charging infrastructure for electromobility. The project will include guarantee of energy origin. Within this environment the battery will be tested and validated.

Project partners within WP3: • KiEMT • GWI Essen • (EMS company) • Dr. Ten • GPX Octrooi • Saxion Hogeschool • Zuyd Hogeschool • (Energy Management Company) •

This project receives funding from the INTERREG-program Deutschland-Nederland with grant number 153098 and with support from the European Union, het Nederlandse ministerie van Economische Zaken en Klimaat, provincie Gelderland, provincie Noord-Brabant, provincie Limburg en het “Ministerium für Wirtschaft, Innovation, Digitalisierung und Energie van Nordrhein-Westfalen”


The goal of this project is to develop, test and validate a decentralised storage system that consists of a hybrid arrangement between the Hydrogen Bromine Flow Battery and another type of energy storage (here decided for a second life Li-Ion). The belonging energy management system shall optimise the hybrid cooperation between the two storage systems. The HBr battery targets 50kW/250kWh.

Project Partners: • Trinergie • HAN • (Energy Production Company) •

This project receives funding from EFRO/OP-Oost under grant number PROJ-000689


GIFT is an innovative project that aims to decarbonise the energy mix of European islands. European islands have to abide by the law of their countries that push toward a greener energy mix to comply with the European and international agreements. GIFT targets to develop innovative systems to allow islands to integrate vast amount of renewables (e.g. virtual power system, energy management systems, better prediction of supply and demand, visualisation of those data through a GIS platform). Within this context Elestor will provide a Hydrogen Bromine Flow Battery as to be tested in Hinnøya, Norway.

Project partners: • INEA • Euroquality • Harstad • C.R.E.S. • Intracom Telecom • R&D Nester • Sapienza university • Odit-e • Trialog • Hålogaland Kraft AS • Etrel • Comune di Procida • NTNU • ARMINES  • Hafenstrom • Sylfen •

This project receives funding from the European Union’s Horizon 2020 Research and Innovation Program under grant number 824410


FlowCamp is a research and training project from 8 different countries, who will recruit 15 PhD students for the project. The project aims to improve materials for high-performance, low-cost next-generation redox-flow batteries. Renewable energy sources like wind turbines require large-scale, stationary energy storage systems to balance out fluctuations in energy generation. Redox-flow batteries are considered to be one of the most promising solutions. The recruited fellows will develop materials (membranes, electrodes, electrolytes, catalysts, sealing materials) and macrohomogeneous models for three next generation RFBs (hydrogen-bromine, organic and zinc-air systems). They will then upscale the new systems to prototype level, and validate them using the cutting-edge battery testing facilities available for the prestigious German-funded RedoxWind project at Fraunhofer ICT.

Project partners: • Amer-Sil SA • Bar Ilan University • CNRS-LEPMI • CNRS-LRP • MTA-TTK • JenaBatteries GmbH • Johnson Matthey • University of Chemistry and Technology Prague • University of Stuttgart Institute of Machine Components (IMA) • Zurich University of Applied Sciences (ZHAW), Institute of Computational Physics (ICP) •

This project receives funding from the EU Research Executive Agency Marie Sklodowska-Curie Innovative Training Networks under grant number 765289

Elestor’s systems are 100% self-contained. Nothing goes in our out… except electricity!