Elestor, a newly-founded company from Arnhem, is focused on developing innovative battery technology based on hydrogen bromide.


There are a number of unique features to this innovative ‘flow battery,’ that result in very low storage costs per kWh, combined with a robust, patented design, that makes production in series possible. This translates to very low overall costs. This is exactly what is needed to a transition to a 100% sustainable energy resource, especially in areas where reliable energy production is seasonal or dependent on weather conditions (sun, wind, etc.).

The first prototype version of 1kW / 10 kWh has been developed and a pilot was started in November 2016. Pilot partners are the University of Applied Sciences Arnhem/Nijmegen and ECN, a part of the engineering firm Witteveen and Bos in Deventer. The testing of this version will take place in an international INTERREG consortium consisting of both Dutch and German business partners working together. Elestor is planning to combine its battery technology in cooperation with various partners, including German energy networks and aggregators, combined with the complementary storage technology of the applied development company Dr. Ten.


Oost NV has worked together with Elestor, the KiEMT Foundation and other SME companies in developing this international partnership as well as applying for funding through INTERREG. Elestor secured financing in 2015 through PPM Oost from the Gelderland for Innovations (GvI) fund in order to continue developing this patented battery technology.