How The Aqueous Metal Cell Technology Works

Nickel-hydrogen batteries have operated in space for more than four decades. They power the International Space Station. They powered the Hubble Space Telescope. NASA and aerospace engineers chose them because they needed batteries that could cycle tens of thousands of times in extreme conditions without degrading and the chemistry delivered.

EnerVenue's Aqueous Metal Cell (AMC) technology applies that same electrochemistry to stationary energy storage on Earth. The video below explains how the technology works, where it came from, and why it performs differently than conventional battery systems.

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What Makes AMC Different

Most grid-scale batteries use lithium-ion chemistry. Lithium-ion works well for many applications, but it comes with tradeoffs that matter at infrastructure scale: capacity degrades over time, thermal management adds complexity and cost, and replacement cycles shorten the economic life of a project.

AMC chemistry uses a water-based electrolyte, carries zero risk of fire from thermal runaway and needs no fire suppression. EnerVenue's systems are designed for 30,000 cycles, 30 years and 3 cycles a day, with no augmentation.

For utilities, grid operators, and developers evaluating long-duration storage, those differences show up directly in project economics: lower maintenance costs, no mid-life augmentation, and simpler permitting.

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Where AMC Fits

AMC performs best in applications where duration, reliability, and lifecycle cost drive the decision:

• Utility-scale energy storage paired with renewables
• Grid reliability and resilience in congested or capacity-constrained regions
• Behind-the-meter storage for data centers and critical infrastructure
• Long-duration discharge applications where four hours is not enough

Grid congestion is intensifying. Data center power demand is accelerating. Operators increasingly need storage assets that last, require minimal maintenance, and perform consistently across thousands of cycles. AMC was engineered around exactly those requirements.

Frequently Asked Questions

What is an aqueous metal cell? An aqueous metal cell is a battery that uses a water-based electrolyte and nickel-hydrogen electrochemistry. It is derived from the same battery technology used aboard the International Space Station and other long-duration space missions.

How long does EnerVenue's AMC last? EnerVenue designs its AMC systems for a 30-year design life and 30,000 charge-discharge cycles at up to three cycles a day, with no augmentation.

Is AMC safer than lithium-ion? The water-based electrolyte is non-flammable and the cell carries zero risk of fire from thermal runaway, so no fire suppression is needed. That simplifies permitting and widens the range of sites where the battery can go.

Where is AMC technology used today? The first fourth-generation system has operated with Towngas at Jintan, Changzhou, since November 2025. The first commercial order, 26 Energy Prism containers for an oilfield in northern China, ships from December 2026. Customers include PowerSecure in the United States, Radiance Energy in Canada and Horizon Power in Western Australia.