Energy Vault Begins Construction on 150 MW Battery Storage Project in Texas
- Jan 8
- 2 min read
Groundbreaking on the SOSA Energy Center marks new grid‑scale construction activity and momentum in utility‑scale storage deployment.
In early January 2026, Energy Vault Holdings started construction on the SOSA Energy Center, a 150 MW/300 MWh battery energy storage system in Madison County, Texas, within the ERCOT North market. The project was acquired in late 2025 from Savion, a Shell subsidiary, and will be developed under Energy Vault’s Asset Vault investment platform. The facility’s commercial operation is expected in the second quarter of 2027, and the project’s development is backed by a $300 million preferred equity investment. Energy Vault will manage engineering, procurement, and construction, and is in advanced negotiations on long‑term offtake arrangements.
Construction started in January 2026 on the SOSA Energy Center, a 150 MW/300 MWh grid‑scale battery storage project in Texas.
The project siting is in the ERCOT North region, a key market for storage and renewable integration.
It will be built and operated under Energy Vault’s Asset Vault model with a $300 million preferred equity investment.
Commercial operations are expected by Q2 2027, reflecting typical multi‑year build timelines.
Energy Vault will handle engineering, procurement, and construction internally, maintaining control of project delivery.
“Breaking ground on the SOSA Energy Center illustrates the growing momentum in deploying utility‑scale battery storage infrastructure.”
CONCLUSION
The start of construction on a major utility‑scale battery storage project underscores the ongoing shift toward integrating large storage assets into the broader grid as part of deployment strategies. These kinds of construction milestones signal that advanced energy assets will be critical for grid flexibility, reliability, and renewable integration. As more complex transmission and grid expansion projects, including HVDC corridors, are planned and built, successful execution of storage and ancillary infrastructure projects highlights the importance of coordinated deployment planning, engineering reliability, and construction readiness to achieve regional and national energy goals.
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