EnerVenue’s Changzhou facility has an initial annual capacity of 250 MWh, with plans to reach multi-GWh capacity by 2028
It is based on AMC technology that uses a water-based nickel-hydrogen chemistry and is designed for up to 30,000 charge cycles
The production milestone comes as the company secures its first multi-MWh commercial order for 26 storage units totaling 11 MWh
California, US-based EnerVenue Holdings has started production at what it calls the world’s first high-volume manufacturing line for its Aqueous Metal Cell (AMC) technology in Changzhou, China. The facility has an initial annual capacity of 250 MWh, with EnerVenue planning to increase this to 1 GWh in 2027 and multi-GWh capacity by 2028.
The company said the first conforming cell came off the production line at the end of September 2026, with the line expected to reach full production rates through November. At full automation, the facility is designed to produce about 300 fourth-generation AMC per day.
As opposed to lithium-ion cells, AMC is a water-based metal battery with nickel-hydrogen chemistry, the same chemistry used for the Hubble Space Telescope and International Space Station (ISS). Once charged, it produces hydrogen gas and stored inside a sealed, large-format cell ensuring there is no liquid spillage. The company says there is no flammable organic solvent in the cells.
EnerVenue said it uses no lithium or rare earths. The AMC has been designed for 30,000 charge cycles, equivalent to up to three cycles a day for 30 years, requiring no scheduled augmentation required over that period.
It claims it is the “most durable and resilient battery ever built for grid-scale deployment” as it is suitable for both hot and cold climates.
The approximately 20,000-square-meter facility was built specifically for AMC production, says EnerVenue. Since the equipment for AMC is not available commercially, EnerVenue said it designed and built the equipment specifically for the line. The line, it adds, runs as a single flow from raw material to finished cell.
Each cell passes 41 quality checks across 11 testing stations covering areas including weld integrity, leak tightness and performance. It tests fully commissioned 150 kWh battery racks on site before shipping them to the customers.
The production line makes cells used across EnerVenue’s four energy storage products—30 kWh Energy Core for telecom and other distributed UPS applications, 108 kWh Energy Cube for building and data center UPS, 150 kWh Energy Rack for commercial, industrial and grid applications; and 600 kWh to 1 MWh Energy Prism containerized systems.
The Changzhou facility also serves as a ‘blueprint’ for future “local-for-local” expansion since the stations are standardized and can be replicated for other markets, it shared.
Previously, in March 2022, EnerVenue had planned to establish a manufacturing facility in Shelby County of Kentucky, US. The company subsequently abandoned the Kentucky plan and chose Changzhou for its first factory.
EnerVenue CEO Henning Rath told Reuters that the decision to manufacture first in China was driven by the depth of the Changzhou industrial cluster calling it the “secret sauce”. This includes suppliers and engineering expertise in areas such as hydraulics, pneumatics and automation.
He said building the factory in China made it possible to demonstrate the technology at scale with the capital available to EnerVenue. According to the report, Rath made building in China a pre-condition for taking the job in April 2026 (see Henning Rath Joins As EnerVenue’s Chief Executive Officer).
EnerVenue's own announcement highlights the same supply-chain advantage, noting that around 160 battery-industry companies operate in Changzhou, with a highly developed battery supply chain within a 50-to-100-km radius of the plant.
The production milestone comes alongside EnerVenue's first multi-MWh commercial order. The company announced on September 23, 2026 that a major Chinese oil and gas producer has placed an order for 26 Energy Prism containerized storage units totaling 11 MWh.
The systems will be installed at an oilfield in northern China, where they will store electricity generated by an onsite solar array and supply it to the operation. The first three units are scheduled to ship in December 2026, with the remaining 23 units due to follow in March 2027.
The systems will use EnerVenue's fourth-generation AMC cells produced at the new Changzhou facility.
EnerVenue said the Changzhou line is funded by a $300 million Series B extension announced in March 2026 and that it has raised more than $700 million in total.
