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acquisitionAnnounced · Feb 23, 2026Energy StorageSource · CredibleArticle · Factual
ESS Tech acquires VoltStorage
David Najork · Founding Software Engineer
Published · Updated · 1 min read
Deal value
—
Target
VoltStorage
Munich, Bavaria
Acquirer
ESS Tech
Full Acquisition
Status
Announced
ESS Tech agreed to acquire VoltStorage. Reported deal value: Undisclosed. Status: Announced. Sector: Energy Storage. Target headquarters context: Munich, Bavaria, Germany.
This page summarizes publicly available information about the transaction as of 2026-02-23. Figures and status may change as filings and press coverage update.
ESS News US-based iron flow battery specialist ESS Tech , Inc. has announced the acquisition of the intellectual property and assets of VoltStorage GmbH , a German developer of iron-salt battery technology that ceased operations in mid-2025
Deal timeline
Announced
Feb 23, 2026 · pv-magazine.com
Additional milestones (proxy, vote, close) appear as filings and press updates are indexed.
Sector context
This transaction is classified in Energy Storage. Figures and status may change as sources update.
Sources: pv-magazine.com · Primary article · FireStrike proprietary index