Energy Vault to provide 20 GWh of hyperscale battery storage to data centers

California-based utility-scale energy storage specialist Energy Vault will provide 2 GW/ 20GWh of firm, primary power to several data center sites developed by RackScale Data Centers. Energy Vault’s deal with the data center developer coincides with the launch of its latest battery energy storage system (BESS) product, The B-Nest.

The B-Nest is a multi-story structure designed to house batteries for onsite energy storage. It can store up to 1.6 GWh of energy per acre, a more than eight-fold increase compared to traditional ground-mounted BESS installations.

RackScale plans to deploy the B-Nest technology at its data center sites, which are tipped to begin construction in 2026. B-Nest’s high-energy density could provide each data center with full primary power for more than 10 hours. Furthermore, if it is paired with an interruptible utility power contract, the B-Nest can ensure full power deliverability to the data center during demand response events. RackScale’s data centers will participate in demand response programs with local utilities.

The B-Nest joins Energy Vault’s existing fully integrated BESS product suite. Its multi-story, fixed frame structure makes it particularly suitable for data center deployment due to their space limitations and high energy demands. It pairs with Energy Vault’s proprietary VaultOS Energy Management System to control, manage, and optimize the BESS operations.

“The B-Nest will be a major leap forward for the data center sector, and we are incredibly excited to bring it to market in partnership with RackScale Data Centers,” said Marco Terruzzin, Chief Product Officer, Energy Vault. “By incorporating the multi-story fixed frame structure concept inherent in our G-VAULT technology, we are delivering safe, cost-effective, insurable, and rapidly deployable solutions for the date center industry. With the B-Nest we look forward to providing data center developers the power they so urgently need.”

Terruzzin added he hoped the deployment of B-Nest at RackScale’s data centers would establish a model for the rest of the data center sector. “The safety characteristics, energy density, and economics of the B-Nest solution are ideally suited to meet the needs of the data center market,” he emphasized.