EnerVenue Secures $300 Million for NASA-Derived Metal-Hydrogen Grid Storage Batteries

EnerVenue Secures $300 Million for NASA-Derived Metal-Hydrogen Grid Storage Batteries

EnerVenue, a California-based energy storage startup, has raised $300 million in a Series B extension led by Full Vision Capital to commercialize metal-hydrogen battery technology originally developed for the International Space Station and Hubble Space Telescope. The funding will accelerate production at the company’s Kentucky gigafactory and support deployment of utility-scale battery systems that promise to outlast lithium-ion alternatives by decades while eliminating fire risk and toxic waste concerns that plague current grid storage technologies.

NASA Heritage Technology

EnerVenue’s nickel-hydrogen batteries are based on the same chemistry that has reliably powered NASA spacecraft for over 30 years, including the International Space Station and the Hubble Space Telescope. The technology uses a combination of nickel hydroxide and hydrogen gas in a sealed vessel, creating an electrochemical cell that is virtually immune to degradation from cycling. While traditional lithium-ion batteries lose significant capacity after 3,000-5,000 charge cycles, EnerVenue’s cells maintain over 80% capacity after 30,000 cycles — equivalent to more than 80 years of daily cycling. This extraordinary durability fundamentally changes the economics of grid-scale energy storage.

Safety and Environmental Advantages

Unlike lithium-ion batteries, which contain flammable electrolytes and can experience thermal runaway leading to fires and explosions, EnerVenue’s nickel-hydrogen chemistry is completely non-flammable and operates safely across a wide temperature range from -40 to 60 degrees Celsius. The batteries contain no cobalt, lithium, or other conflict minerals, and are fully recyclable at end of life. These safety and environmental characteristics are particularly attractive for utility-scale installations near residential areas, where fire risk from large lithium-ion battery systems has become a growing public concern following several high-profile incidents.

Manufacturing Scale-Up

EnerVenue’s gigafactory in Shelbyville, Kentucky is designed to produce 2 gigawatt-hours of battery capacity annually when operating at full capacity. The facility, which received significant support from state and federal manufacturing incentives, uses automated production lines that can fabricate battery cells at approximately one-tenth the cost of the original NASA production methods. The company has optimized the cell design for manufacturing simplicity, reducing the number of components per cell from over 50 in the NASA version to just 12 in the commercial version while maintaining equivalent performance and durability specifications.

Market Opportunity and Deployment

The global grid storage market is projected to reach $500 billion by 2030, driven by the rapid expansion of renewable energy that requires storage to manage intermittency. EnerVenue has secured contracts with several major utility companies for pilot installations ranging from 10 to 100 megawatt-hours, with commercial deliveries beginning in Q3 2026. The company is targeting applications where its extreme longevity provides a decisive cost advantage over lithium-ion, particularly in daily cycling applications for solar and wind integration. At projected scale, EnerVenue estimates that its technology will deliver a levelized cost of storage approximately 40% lower than lithium-ion over the system’s lifetime.