Energy Vault to start deploying 275MWh BESS in California; adds to existing pipeline

LinkedIn
Twitter
Reddit
Facebook
Email

Gravity-based energy storage company Energy Vault is to immediately begin deploying a previously-announced 275MWh battery energy storage system (BESS) project in California for Wellhead Electric and W Power.

The NYSE-listed company has signed an engineering, procurement and construction (EPC) contract with developers Wellhead Electric and W Power, it announced last week (8 September).

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

The project was first announced in Energy Vault’s second quarter earnings release at the start of August, when it claimed it would see US$680 million of revenue over 2022 and 2023 combined.

It said in a press release it would ‘begin deployment immediately’ of the 68.8MW/272.5MWh at W Power’s Energy Reliability Center, a 98MW gas-fired facility in Stanton, and is expected to be completed in mid-2023. Called Stanton ESS, it will be one of the largest energy storage systems in southern California, the companies have claimed.

It will be based on the proprietary system design and Energy Management Software (EMS) from its Energy Vault Solutions (EVS) segment, which provides “technology-neutral’ energy storage solutions and is headed by John Jung, former CEO of battery storage and EMS pioneer Greensmith Energy until its acquisition by Wärtsilä in 2017.

Wellhead Electric has also selected the company as preferred integrator for two additional hybrid energy storage projects in the state, which appears to be a new announcement. Energy Vault said it will support Wellhead and W Power with the development and deployment of additional projects in California totalling over 600MWh of capacity in the ‘near term’.

The only other projects it has announced within the EVS segment are 220MW of solutions for Jupiter Power and 440MWh with an unnamed ‘large western US utility’.

W Power describes itself as a woman-owned business that develops and owns power generation facilities.

Robert Piconi, chairman and CEO of Energy Vault, commented on the Stanton ESS announcement: “This exciting project reflects our broad energy storage experience and capabilities across multiple underlying storage technologies while optimising energy density and performance requirements that was a key factor to meet Wellhead’s requirements.

Later adding: “Our EVS-enabled solutions are the natural complement to Energy Vault’s long-duration gravity storage capabilities which are being deployed globally in parallel, and a key component of our vision of being a leading energy storage technology partner to our customers that require innovation and creativity in dealing with the complexities of the grid.”

11 November 2025
San Diego, USA
The 2024 Summit included innovative new features including a ‘Crash Course in Battery Asset Management’, Ask-Me-Anything formats and debate-style sessions. You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.

Read Next

June 24, 2025
Commissioning of the 1.6GWh Melbourne Renewable Energy Hub (MREH) battery energy storage system (BESS) in Victoria, Australia, is set to begin.
June 24, 2025
AEMO has issued a call for 6-hour duration BESS in Western Australia to support grid reliability as coal-fired power plants are withdrawn.
June 23, 2025
The North American Electric Reliability Corporation’s (NERC’s) 2025 State of Reliability report finds evidence suggesting battery energy storage systems (BESS) can improve primary frequency response.
June 23, 2025
The New Jersey Board of Public Utilities (NJBPU) has approved a programme to “significantly” expand the amount of grid-scale energy storage capacity in the state.
June 23, 2025
The Australian government is set to cut CIS tender process times to around six months as a 576MWh solar-plus-storage site has been approved in Tasmania.

Most Popular

Email Newsletter