Terra-Gen: Faulty sprinkler system forced the decommissioning of stolen Valley Center LG batteries

LinkedIn
Twitter
Reddit
Facebook
Email

The malfunctioning of a sprinkler system forced the decommissioning of the LG batteries which were eventually stolen from Terra-Gen’s Valley Center BESS in California, the company told Energy-Storage.news.

As we reported last week, the battery packs were taken from the site after having been decommissioned and placed on pallets awaiting transportation. While this resolved the question around how they were taken in the first place, it raised the arguably as-important issue of why they were taken offline just a year or less after the system was deployed.

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

In response to a request for comment about this, a spokesperson for Terra-Gen told Energy-Storage.news:

“In response to your inquiry about why the battery packs were decommissioned just one year after the system was energized, in April of 2022, a sensor system fault triggered the water-based protection systems resulting in the batteries in question to be taken out of service.”

Sprinklers going off when they shouldn’t have were behind arguably the most high-profile battery overheating incident to-date – the incident which took offline the Moss Landing battery energy storage system (BESS) in California.

A report found it was most likely due to a programming error that the Very Early Smoke Detection Apparatus (VESDA) triggered the spray of water at a threshold of smoke detection below what should have been required, project owner Vistra Energy said.

An insurance source recently pointed to this happening on other occasions too, telling Energy-Storage.news that sprinklers can sometimes cause more harm than they prevent.

Terra-Gen’s clarification coincides with a guest blog published this week about fire safety and energy storage from executives at Energy Safety Response Group (ESRG) and Finland-based power solutions firm Wärtsilä. In it, they wrote about the need for a systems-level approach to fire safety rather than a narrow focus on battery cells themselves.

Energy-Storage.news’ publisher Solar Media will host the 5th Energy Storage Summit USA, 28-29 March 2023 in Austin, Texas. Reporter Cameron Murray will be attending both days.

Featuring a packed programme of panels, presentations and fireside chats from industry leaders focusing on accelerating the market for energy storage across the country. For more information, go to the website.

Read Next

June 18, 2025
Distributed energy company Scale Microgrids has closed US$275 million to support 140MW of distributed generation projects, including battery storage installations in several US states.
June 18, 2025
Home battery systems company Haven Energy and California utility Clean Energy Alliance (CEA)  have partnered to provide homeowners in the state with battery energy storage systems (BESS) at no purchase or installation cost.
June 18, 2025
BESS technology continues to advance, but the energy industry needs to change its thinking about O&M to capture the full potential, writes Jeremy Williams of IHI Power Services.
Premium
June 17, 2025
Q2 2025 saw the sharpest jump in battery energy storage system (BESS) prices since 2021, according to procurement platform Anza Renewables’ Q2 US energy storage pricing insights report.
Premium
June 17, 2025
After months of deliberation and analysis, the California Energy Commission (CEC) has approved the first project reviewed as part of its opt-in certification scheme.

Most Popular

Email Newsletter