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ESS Tech acquires VoltStorage GmbH to expand long-duration energy storage

General • February 23, 2026

ESS Tech acquires VoltStorage GmbH to expand long-duration energy storage is drawing significant interest across the industry.

US-based ESS Tech has acquired the assets and intellectual property of Germany’s VoltStorage GmbH to strengthen its long-duration energy storage (LDES) portfolio and combine two iron-based flow battery technologies.

Experts suggest this could influence future trends and innovation in the sector.

More updates are expected as the story develops.


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