Energy Vault Holdings secures 1.25 GW dedicated power supply agreement for AI data center infrastructure, among the largest single AI data center power contracts disclosed.
Energy Vault Holdings (NRGV) shares surged 17.91% to $3.49 on Friday, gaining an additional 0.29% after hours to $3.50, following a major commercial agreement worth 1.25 gigawatts of power infrastructure for hyperscaler AI data centers. The deal represents the company's largest single contract to date.
Under the agreement, Energy Vault will supply battery energy storage systems, grid-forming power conversion technology, and infrastructure control software. The company will combine these systems with dispatchable power generation and turnkey engineering services for large computing campuses. Together with its strategic partner—which brings experience across natural gas engines, turbines, diesel systems, solar power, and hydrogen technologies—Energy Vault will deliver an integrated platform capable of supporting demanding data center power requirements.
The planned systems will operate independently from traditional utility connections during initial deployment phases, allowing customers to bring computing capacity online faster than projects relying entirely on grid connections. Initial deployments are expected to begin within four to twelve months. The control software will manage power flows while maintaining stable voltage and frequency across the infrastructure, respond rapidly to sudden changes in electricity consumption, and reduce unnecessary generator cycling to improve fuel efficiency during changing computing workloads.
The modular design allows customers to expand power infrastructure as their computing campuses grow. Operators can later connect utility electricity, renewable generation, or other distributed energy resources to the existing platform, enabling them to start operations before permanent utility connections become available and expand capacity over time.
Energy Vault has traditionally developed utility-scale battery, gravity, and green hydrogen energy storage technologies. This agreement strengthens its evolution toward complete energy infrastructure development and power plant integration, combining storage technology with generation, engineering, construction, and infrastructure management services. The companies plan to pursue additional hyperscaler, neocloud, and AI infrastructure projects, targeting markets facing constrained grid capacity, long interconnection timelines, and rising electricity demand.