Westlake Village-based energy storage provider Energy Vault Holdings Inc. is moving to capitalize on the AI data center building boom.

On Feb. 9, Energy Vault Holdings announced an agreement with Broomfield, Colorado-based Peak Energy, where Energy Vault’s battery software management system would be deployed on Peak Energy’s sodium-ion battery energy storage systems.

Two days later, the company announced another partnership for AI data center projects with Denver-based Crusoe Inc., which builds AI data centers in locales with relatively cheap and abundant energy. The first project for the partnership will be at Energy Vault’s battery storage and technology center in Snyder, Texas.

Financial terms were not disclosed for either partnership announcement.

In a separate development late last week, Energy Vault announced it had recently closed a $135 million financing transaction. The financing provider was not identified.

Peak Energy partnership

The deal with Peak Energy involves that company’s sodium-ion battery technology. Sodium is more abundant than the industry standard lithium-ion combination for battery storage. It’s also better adapted for the highly variable power draws of AI data centers, according to Energy Vault’s announcement.

Energy Vault will supply software management tools for 1.5 gigawatt hours of Peak Energy battery storage systems. A gigawatt is one million kilowatts, or enough energy to power more than 800,000 homes.

“The rapid growth of AI is exposing fundamental limitations in conventional power infrastructure,” Marco Terruzzin, chief revenue officer at Energy Vault, said in the announcement. “This solution enables faster deployment, lower cost, and improved safety by combining Energy Vault’s integration platform with Peak’s sodium-ion technology.”

Crusoe partnership

Denver-based Crusoe builds AI data centers in locations that can draw on abundant and relatively cheap electricity, such as Texas. The company already has a data center in Abeline, Texas with a power capacity of 1.2 gigawatts.

Under its deal with Crusoe, Energy Vault will provide modular “powered shell” infrastructure designed to enable fast, repeatable deployment of the electrical and mechanical systems required for AI data centers.

The first deployment is set to take place at Energy Vault’s site in Snyder, Texas that features the first battery storage system entirely owned and operated by the company.

“Crusoe is executing against a clear market imperative: customers need scalable compute delivered quickly and reliably,” Robert Piconi, Energy Vault’s chief executive, said in the company’s announcement.