Ess-Tech Acquires VoltStorage,
VoltStorage acquired by Ess-Tech
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VoltStorage
Undisclosed Amount
February 18, 2026

Ess-Tech
Ess-Tech has acquired VoltStorage, an energy storage company, for an undisclosed amount.
VoltStorage specializes in developing innovative products and solutions designed to help energy providers and customers maximize energy value, eliminate curtailment and waste, and bridge the energy gap through grid deferral.
This strategic move sees Ess-Tech integrating VoltStorage's advanced technologies into its portfolio, marking a significant expansion in the rapidly evolving energy sector.
VoltStorage addresses the critical global challenge of gridlock, where growing energy consumption outpaces supply and overstresses power grids.
Its core offering includes the proprietary Iron Salt Battery (ISB) Vault, an ultra low-cost, non-flammable, and durable battery technology.
Based on established flow battery principles, the ISB technology is specifically tailored for the Long-Duration Energy Storage (LDES) segment, providing essential solutions for bridging renewable power availability, supplementing long-term power grid upgrades, and assuring resilient, long-lasting assets.
The acquisition is expected to create substantial synergies, allowing Ess-Tech to enhance its offerings in the energy market.
By integrating VoltStorage's solutions, Ess-Tech can now provide comprehensive technologies that ensure generated energy is never wasted and is always available when needed.
This directly supports the development of more resilient and green grids, aligning with the increasing global demand for sustainable and reliable energy infrastructure.
The combination of Ess-Tech's resources with VoltStorage's specialized LDES expertise positions the combined entity to address pressing energy storage needs.
Looking ahead, the integration of VoltStorage's innovative Iron Salt Battery technology is anticipated to strengthen Ess-Tech's capacity to deliver advanced energy solutions.
The combined entity is poised to play a pivotal role in enabling the transition to more stable and efficient energy systems, contributing to the assurance of perpetual power and the modernization of global energy grids.
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