Vionx Energy Corporation

Renewable Energy Semiconductor ManufacturingMassachusetts, United States11-50 Employees

Vionx Energy Corporation, based in Woburn, Massachusetts, develops grid-scale energy storage solutions for the renewable energy sector. Its systems are designed for long-duration operation with lifespans reported at over 20 years and safety certifications indicating non-flammability. The technology supports discharge durations of up to 10 hours at full rated power, underpinned by a flow-battery approach and proprietary electrolyte processing. The VNX product family uses a modular architecture to deliver reliable, long-life storage, and has undergone durability testing indicating up to 40 years of stack life. 

Currently, Vionx is deploying its second six-hour duration system in Massachusetts with National Grid, illustrating progress in utility-scale projects. The company is moving toward higher-volume production to support anticipated growth in the energy storage market, aligning with its focus on grid-scale, long-duration storage solutions.

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