Energy Vault has partnered with US-headquartered Peak Energy to co-develop a dedicated energy storage platform designed specifically for artificial intelligence (AI) infrastructure. The new solution will be built on sodium-ion battery technology and is aimed at supporting AI-focused data centers and “AI Neoclouds.”
The platform will combine Peak Energy’s sodium-ion batteries with Energy Vault’s system integration expertise and Vault OS™ software. The entire system will operate through Vault OS™, which will manage battery performance, optimize power dispatch, extend asset life, and maintain operational control.
Traditional battery storage systems are typically designed for stable grid operations and are not optimized for the high and fluctuating energy demands of AI training and processing. The partnership seeks to address this challenge by developing a storage architecture specifically suited for AI-first data center operators.
“The rapid growth of AI is exposing fundamental limitations in conventional power infrastructure,” said Marco Terruzzin, Chief Revenue Officer at Energy Vault. “This solution enables faster deployment, lower cost, and improved safety by combining Energy Vault’s integration platform with Peak’s sodium-ion technology.”
Exclusive Offering and Supply Agreement
The integrated system will be exclusive to Energy Vault as part of its data center portfolio. Key advantages include simplified electrical systems, lower dependence on traditional UPS solutions, reduced cooling needs, and improved handling of volatile AI compute loads.
Energy Vault has secured an initial 1.5 GWh offtake agreement for Peak Energy’s US-manufactured sodium-ion batteries. This ensures supply chain reliability and eligibility for Domestic Content tax credits. The company stated that the solution offers a stronger economic case compared to lithium-ion batteries and imported alternatives. Energy Vault has also secured exclusive regional channel rights for Peak’s technology in Australia and Japan.
Proven Sodium-Ion Technology
Peak Energy previously launched the first grid-scale sodium-ion deployment in the US a 3.5 MWh system at the SolarTAC renewable energy facility in Colorado, operated with nine utilities and independent power producers.
According to Peak Energy, its passively cooled sodium-ion system reduces lifetime costs by 20% and lowers degradation by 33% over 20 years, potentially saving over $100 million during a project’s lifespan.
Cameron Dales, President and Chief Commercial Officer at Peak Energy, stated: “If you look at the total cost of ownership over 20 years, these passive system innovations allow us to deliver savings of up to $75/kWh on a net present value basis. That’s more than the cost of the cells themselves.”
Commenting on the collaboration, Landon Mossburg, CEO of Peak Energy, said: “Lowering the cost of energy is essential for winning the AI race, and Peak’s proprietary sodium-ion energy storage systems offer the lowest-cost and fastest way to get data centers on the grid. This partnership confirms that Peak technology is at the center of meeting AI energy needs today and into the future.”
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