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  2. EPA in California

Moss Landing Vistra Battery Fire Response

Learn More: Response Timeline | Frequently Asked Questions | Photos | Register for Email Updates

U.S. EPA Region 9 Emergency Response Badge

We are committed to doing our work with respect for the Moss Landing community and local stakeholders. Transparency and community engagement throughout the process are central to our approach.

Since the January 2025 fire in Moss Landing, EPA has been on-site providing technical assistance in the planning and preparation for battery removal. We are working to ensure that Vistra safely removes and disposes of batteries impacted by the fire.

On this page:
  • Administrative Record
  • Work Highlights
  • Community Safety
  • Background and EPA’s Involvement
  • What is Each Agency’s Role in the Fire Response?
  • Battery Treatment, Transport & Disposal
  • Completed Activities
  • Documents

Administrative Record

Moss Landing Administrative Record available for public comment until October 15, 2025

  • The Administrative Record contains documents that justify EPA directing response activities at the site.
  • Public comments on the Administrative Record will be accepted from September 15 through October 15, 2025.
  • Please email comments to Hiruni Jayasekera, Community Involvement Coordinator at jayasekera.hiruni@epa.gov.
  • The Administrative Record is available online.
  • A paper copy of the Administrative Record can be found at:
    Castroville Branch Library
    11160 Speegle St.
    Castroville, CA 95012
    Please call for current hours of operation: (831) 769-8724.

Work Highlights

September 29, 2025

On September 29, 2025, workers began removing the first set of batteries from the Moss Landing 300 building. This marks a major milestone in the battery removal process.

A significant focus the past few months has been to ensure battery removal is safe and efficient (pdf). For weeks, teams have practiced safe battery removal handling and processing procedures. This was done while limited demolition and building stabilization happened.

  • Battery removal for most of 2025 will focus on “intact” batteries. This means batteries with no damage or minor damage from the fire.
  • Workers will de-energize these batteries and transfer any remaining energy back into the local electrical grid.
  • We will continue to keep the community updated as each phase of battery removal process is completed.

See our Community Involvement Plan for more information on the battery processing process.

As with all work, we are ensuring strict health and safety requirements, and best practices are always followed.

September 16, 2025

We are committed to transparency. To share information on this project, we have developed the  Moss Landing Battery Fire Community Involvement Plan (pdf) (4.25 MB, September 16, 2025) .

  • To create the plan, we interviewed 17 community members, local officials, organizations, and other stakeholders.
  • The interviews and other research helped us identify information gaps and things to keep in mind as we share information and engage the community throughout this project.
  • We developed and will implement the plan with support from Vistra.

Many thanks to the Monterey community members who volunteered to be interviewed. Your thoughtful, heart-felt contributions were the basis for this plan and we appreciate your openness to share with us.

July 17, 2025

On July 17, 2025, EPA entered into an agreement with Vistra to remove damaged batteries from its property.

  • The agreement covers the battery removal preparation and planning work that Vistra has been doing voluntarily and future work.
  • Building stabilization and demolition planning is underway to safely access the batteries.
  • All battery removal work will be done under our close oversight. We are coordinating with Monterey County throughout.

Community Safety

Community safety throughout the project is our priority. Batteries damaged in a fire may be unstable and could catch fire again during work. We are overseeing Vistra as they take these safety steps:

  1. Constant air monitoring and sampling around the property.
  2. Keep a 24/7 private firefighting company on-site out of an abundance of caution. The company will be able to respond right away and coordinate with the local fire department if a fire starts.
  3. Maintain an EPA-approved emergency response plan.

For more information on the battery removal process, see our Battery Treatment, Transport, and Disposal section.

Background and EPA’s Involvement

  • On January 16, 2025, the Moss Landing 300 battery energy storage system at the Moss Landing Vistra power plant (Monterey County, Calif.) caught fire.
    • The 300-megawatt system held about 100,000 lithium-ion batteries.
    • About 55 percent of the batteries were damaged by the fire.
  • Local agencies immediately requested our support for air monitoring. EPA deployed to the scene and did air monitoring January 17-20.
  • The State of California also requested we oversee the battery removal process.

Learn More: Updates on EPA’s Response

What is Each Agency’s Role in the Fire Response?

EPA

  • Oversee the safe removal of batteries from the property. Our oversight applies to:
    • activities within the fence line of the property, and
    • preparation of the batteries for transport to recycling or disposal facilities.
  • Ensure transparency and community engagement throughout the battery removal work.
  • Provide technical assistance to Vistra for battery:
    • removal,
    • transport,
    • recycling and disposal, and
    • closely coordinate with local and state governments to ensure information sharing, consistency and efficiency.

Vistra

  • Respond to fire damage and safely remove damaged batteries. All work is being done under federal and state oversight.
  • Vistra will perform and pay for the removal of the impacted lithium-ion batteries from the site under EPA’s oversight.
  • Submit detailed work plans to EPA, implement comprehensive safety measures to protect nearby residents and workers during the cleanup process, and participate in community involvement activities to enable meaningful community engagement throughout the removal process.

State and Local Government

  • Oversee all activities:
    • outside the property fence line, and
    • on the property that are not related to battery removal.

Monterey County Health Department

  • Learn more about response activities in the community at the Monterey County website.

State of California Environmental Protection Agency (CalEPA)

  • Collaborate with Monterey County on outside of the fence activities, such as community sampling.
  • Coordinate with EPA on inside-the-fence activities.
  • En español

Updates

  • Latest Updates
  • Register for Email Updates
  • Administrative Record Available for Public Comment on Time-Critical Removal Action at Moss Landing

    EPA has compiled the Administrative Record (AR) for a Time-Critical Removal Action in Moss Landing, California. The record is available for public comment over the next 30 days.

    • Comments Due Date: October 15, 2025
    • Geographic Locations: Southwest, California

News Releases

  • EPA Oversees Largest Lithium-Ion Battery Cleanup in Agency History at Moss Landing

  • EPA reaches agreement with Vistra Corp. for urgent battery cleanup at Moss Landing, launches website for public updates

  • EPA llega a un acuerdo con Vistra Corp. para la limpieza urgente de baterías en Moss Landing, lanza un sitio web para actualizaciones públicas

  • EPA Completes Air Monitoring Near Moss Landing Vistra Battery Fire

  • EPA Air Monitoring Results Near Moss Landing Vistra Battery Fire Not Exceeding Health Standards

Resources

  • Administrative Settlement Agreement and Order on Consent: Moss Landing Complex (pdf) (5.12 MB, July 17, 2025)
  • Moss Landing Battery Fire Community Involvement Plan (pdf) (4.25 MB, September 16, 2025)
  • January 2025 Fire Timeline
  • Vistra Corp.
  • Monterey County
EPA Region 9 Deputy Regional Administrator Cheree Peterson tours the site with the EPA emergency response team and Vistra
Deputy Regional Administrator Cheree Peterson tours the site with the EPA emergency response team and Vistra. Click to enlarge.

Contact

Please email us with your questions and concerns about the Moss Landing Vistra Battery Fire Response at R9.info@epa.gov.

Private fire truck part of Vistra’s fire team.
Private fire truck, part of Vistra’s fire team. Click to enlarge.
Back of a large RV like vehicle with painted text "U.S. EPA Command Post"
Photo of our Mobile Command Post stationed on-site shortly after the Moss Landing fire started (photo taken at a different event). Click to enlarge.

Battery Treatment, Transport & Disposal

Related Work

We have done extensive work dealing with batteries after large-scale fires, most recently for the 2025 Los Angeles wildfires. We are providing technical assistance to Vistra and its work crews to ensure safety and efficiency.

EPA will oversee the safe removal and disposal of batteries impacted by the fire.

De-energizing Batteries for Safety

  • Under our technical guidance, Vistra will use various methods to de-energize the batteries before transport.
  • Undamaged batteries will be de-energized.
  • Some batteries may not be able to be de-energized. These will be treated on the property before disposal.

Shipping and Disposal

  • We will ensure packaging and transportation follows the U.S. Department of Transportation safety regulations.
  • Depending on the type of battery waste, recycling may be possible.

Completed Activities

EPA and Vistra personnel surveying damage to the “ML300” building.
EPA and Vistra staff inspecting damage to Vistra’s building post-fire. Click to enlarge.

Before reaching the agreement with Vistra in July 2025 on the battery removal process, the following activities were completed on site:

  • Disconnected (delinked) batteries from the building’s infrastructure for safety.
  • Removed fire debris with asbestos from part of the damaged building.
    • Debris was safely transported and disposed of at the Forward Landfill. The landfill is in Manteca, Calif., about 135 miles northeast of Monterey.
  • Removed about 586,300 gallons (about as much as an Olympic-sized swimming pool) water that was stored in tanks on the property. The water was sampled, determined to be non-hazardous and sent for disposal.

Documents

Free viewers and readers are available to access documents on our website. If you encounter issues with assistive technology, please contact us.

  • EPA Presentation: Moss Landing Battery Fire Response (pdf) (3.69 MB, September 16, 2025)
    Slides from EPA’s presentation about the Moss Landing Battery Fire cleanup to the Monterey County Board of Supervisors on September 16, 2025.
  • Moss Landing Battery Fire Community Involvement Plan (pdf) (4.25 MB, September 16, 2025)
    This Community Involvement Plan includes content based on research and personal interviews with Monterey-area community members, local government representatives, organizations and other stakeholders.
  • Administrative Settlement Agreement and Order on Consent: Moss Landing Complex (pdf) (5.12 MB, July 17, 2025)
    Administrative Settlement Agreement and Order on Consent For Removal Action in the matter of Moss Landing Complex, Moss Landing, California - Vistra Corp. Moss Landing Energy Storage 1 LLC and Moss Landing Power Company LLC. CERCLA Docket No. 09-2025-08. On July 17, 2025, EPA and Vistra Corp. have entered into an enforceable agreement, called an Administrative Settlement Agreement and Order on Consent, under which Vistra will conduct and pay for on-site battery module removal under EPA’s oversight
  • EPA Letter: Response to Monterey County Board of Supervisors (pdf) (740.96 KB, June 30, 2025)
    EPA Region 9 response letter to May 23, 2025 Monterey County Board of Supervisors’ letter entitled Support for U.S. EPA Oversight and CERCLA Coordination at the Moss Landing Site, Monterey County.
  • Notice of Federal Response Action (NFRA) issued to Vistra Corp. (pdf) (186.47 KB, January 22, 2025)
    After the January 2025 battery fire at Moss Landing, EPA issued a Notice of Federal Response Action (NFRA) to Vistra Corp. on January 22, 2025, informing Vistra that a response action was necessary. This formal notice gave Vistra the opportunity to conduct a response and outlined work that needed to be done at the site

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  • Moss Landing Vistra Battery Fire
    • Response Timeline
    • Frequently Asked Questions
    • Photographs
    • Register for Email Updates
  • Incendio de la batería Vistra en Moss Landing
    • Cronograma de respuesta
    • Preguntas frecuentes
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Last updated on October 9, 2025
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