Elestor B.V.

Elestor B.V. is a Netherlands-based energy storage technology company developing long-duration flow batteries that use hydrogen and bromine chemistry. Its systems store electricity via reversible electrochemical reactions in a flow-cell with external electrolyte tanks, decoupling energy capacity from power and enabling scalable storage from multi-hour to multi-day durations. Elestor targets applications such as grid balancing, renewable integration, and industrial energy management.

The company’s approach leverages abundant materials and established chemical handling practices to pursue cost-effective, durable, and recyclable stationary storage. Elestor works with utilities, industrial partners, and research institutions to advance system performance and deployment, making it relevant to the chemical industry through its bromine-based electrolytes, materials supply chains, and process engineering requirements.