Energy Vault Holdings, Inc. (NYSE: NRGV), a prominent provider of large-scale sustainable energy storage technologies, has announced that construction has commenced on the SOSA Energy Center, a battery energy storage facility with 150 MW capacity and 300 MWh duration in Madison County, Texas.
Energy Vault purchased this asset from Savion, a Shell plc subsidiary, during the fourth quarter of 2025 through its Asset Vault initiative, with operations anticipated to begin in the second quarter of 2027.
This construction phase marks substantial progress in Energy Vault’s asset ownership and operation approach, reflecting the firm’s dedication to quickly deploying financially viable energy infrastructure that generates steady income streams.
The SOSA facility is the inaugural Asset Vault project to reach the construction stage, backed by Orion Infrastructure Capital’s $300 million preferred equity commitment.
The company maintains a strong financial position to pursue its ownership strategy, closing 2025 with cash reserves exceeding $100 million—a 65% quarterly increase that surpassed projections.
Located within ERCOT North territory, the facility will utilize Energy Vault’s latest B-VAULT™ DC technology, facilitating swift implementation at economical costs while maximizing system uptime.
Once operational, the installation will provide essential grid stabilization and renewable energy integration capabilities for Texas’s evolving power sector, supported by a prospective 6-8-year supply contract under final negotiation with a creditworthy partner.
Robert Piconi, Chairman and CEO of Energy Vault, stated: “Initiating construction on the SOSA Energy Center shortly following its acquisition illustrates how rapidly we’re implementing and expanding our Asset Vault initiative, while highlighting our strategic focus on the Texas ERCOT region—among America’s most vibrant energy markets. Texas remains at the forefront of clean energy deployment and grid enhancement, making it central to our expansion plans.
This undertaking showcases both our capacity to quickly execute premium acquisitions and transition efficiently from purchase to building phase, while strengthening Energy Vault’s role as a vital infrastructure collaborator in Texas’s energy transformation.”
The development features secured land rights, unencumbered ownership, and finalized environmental reviews and grid connection approvals, enabling efficient construction execution.
Energy Vault will handle all engineering, procurement, construction activities, and ongoing maintenance contracts internally, generating diverse revenue opportunities while retaining operational oversight to maximize profitability.
This integrated model under Asset Vault captures economic value throughout the energy storage project’s complete lifecycle, from initial development through extended operations.
The SOSA Energy Center is projected to generate roughly $350 million in aggregate revenue, delivering stable, recurring high-profit cash flows throughout the facility’s operational lifespan.
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