Diablo Canyon Power Plant Decommissioning

On August 31, 2022, the California State Legislature passed Senate Bill 846, co-authored by Senator Bill Dodd and Assemblymember Jordan Cunningham. The legislation seeks to extend operations at Diablo Canyon Power Plant (DCPP) up to 2030. The Governor is expected to sign this Senate Bill into Law.

The County of San Luis Obispo has been actively engaged in the state legislative process regarding the future of DCPP. As the host community for the plant, the County continues to work with federal, state, and local partners to plan for the future of DCPP. The plant plays a significant role in the County’s economy and community, and the County is working to ensure the community’s interests are represented in the safety, environmental, and other regulatory processes and decisions that lie ahead.

For more information, please view the County's press release: State bill passes to extend operations at Diablo Canyon Power Plant - County of San Luis Obispo


Upcoming Public Meetings

December 14, 2022: Diablo Canyon Decommissioning Engagement Panel Meeting (virtual) starting at 6 p.m. PST. This meeting is intended to discuss the status and schedule for the potential continued operations at DCPP. Diablo Canyon Decommissioning Engagement Panel (diablocanyonpanel.org)


January 26, 2023: CPUC-led Public Participation Hearing in PG&E's 2021 Nuclear Decommissioning Triennial Cost Proceeding (A.21-12-007) (virtual): 

Webcast: adminmonitor.com/ca/cpuc/

Phone number: 1-800-857-1917

Passcode: 1767567#


January 31, 2023: CPUC-led Public Participation Hearing in PG&E's 2021 Nuclear Decommissioning Triennial Cost Proceeding (A.21-12-007) (in person):

San Luis Obispo County Chambers 

1055 Monterey Street, Room D170 

San Luis Obispo, CA 93408

If you wish to make a public comment, sign up at the Public Advisor’s Office’s table.


For more information related to the CPUC's proceeding, please visit Proceeding Details (ca.gov)


San Luis Obispo County Decommissioning Activities

In 2016, PG&E decided not to renew the Nuclear Regulatory Commission licenses for the Diablo Canyon Power Plant (DCPP). The California Public Utilities Commission approved the plant’s retirement in 2018. As a result, the power plant would have ceased operating upon the expiration of the Unit 1 and Unit 2 operating licenses, in November 2024 and August 2025, respectively.

PG&E submitted a land use permit application to the County in March 2021 for the decommissioning effort. An application supplement was submitted by PG&E on July 8, 2021, in response to the County’s request for additional application information. A third application filing was submitted by PG&E on October 6, 2021, responding to additional County comments. On October 27, 2021, the County accepted PG&E’s application, thus initiating the environmental review process pursuant to the California Environmental Quality Act.

The DCPP Decommissioning Project application files in CSS have been re-named using a prefix system that enables sorting of the files into chronological order, grouped by PG&E and County.


A User Guide titled “1. CSS USER GUIDE” has been uploaded to the CSS, along with a File Index titled “2. CSS APPL FILE INDEX”, intended to assist the public with identifying the application files in CSS.  The File Index provides the new file name with prefix, the previous file name, and additional reference information on file content.  The User Guide can be accessed here: DRC2021-00092 CSS User Guide.  PG&E’s application materials can be accessed using the link below, or by using the link within the CSS User Guide.

PG&E DCPP Decommissioning Project Application

Project Contacts

For questions or comments please contact: [email protected]

Susan Strachan | Power Plant Decommissioning Manager

Cindy Chambers | Senior Planner

Carrie Sisto | Principal Environmental Specialist





Project Milestones

Project Milestone Time Frame
PG&E Land Use Application Submitted March 29, 2021
Application Accepted by County October 27, 2021
Notice of Preparation Issued October 28, 2021
Environmental Impact Report Scoping Comment Period October 28, 2021 - December 6, 2021
Preparation of Draft Environmental Impact Report  In Progress


If you'd like to receive notifications and updates on the project, please provide your name and email address below:
Diablo Canyon Decommissioning Email Update Request
Enter security code:
 Security code


Public Information and Permit Processing Online Services

Preview of Public Information and Permit Processing Online Services (CSS Portal)

Connect with us on Facebook

For Department News and Updates

Follow Us On Facebook

CA COVID-19 Rent Relief

Housing is Key

CA COVID-19 Rent Relief