CLAWS says "Close Diablo" with Mothers for Peace and 67 orgs

Diablo Canyon Nuclear Power Plant

Diablo Canyon Nuclear Plant, Creative Commons usage, by Tracey Adams

CLAWS says NO to Diablo

Committees for Land, Air, Water and Species (CLAWS) signed on to the letter sent by Jane Swanson of Mothers for Peace, along with 66 other groups, to reiterate that the Diablo Canyon Nuclear Plant must be closed, on schedule and as planned. It's overdue and seriously unsafe. 

We were delighted to see the media release sent by Mothers for Peace get picked up, with features in the New York Times as well as Associated Press. Here's the news:

67 Organizations Push Back

Against Efforts to Extend Operation

of Diablo Canyon Nuclear Plant 

In response to Governor Newsom’s suggestion to extend the operating life of Diablo Canyon nuclear facility beyond its planned closure dates of 2024 and 2025, 67 organizations from across the country sent him a letter of protest on May 17, 2022.

Jane Swanson of Mothers for Peace states, “There is nothing smart about continuing to operate Diablo Canyon beyond its current licenses. It is old, dirty, dangerous, and expensive! Let’s invest California’s surplus money in clean and safe energy resources, conservation, and efficiency.”


Letter to Governor Newsom:

Re: Protest of proposal to extend the operation of Diablo Canyon nuclear facility

Your suggestion to extend the operational life of the Diablo Canyon nuclear facility is an outrage and a betrayal to those of us seeking clean and safe energy for our State.

Diablo means “devil” in Spanish, and the name is fitting. This plant is surrounded by multiple earthquake faults, one of which, the Shoreline Fault, comes within a third of a mile of the Unit 2 reactor. Diablo Canyon, right on the coast, is uniquely vulnerable to earthquakes and tsunamis, making it one of the most dangerous nuclear plants in the country. If there is a major accident, the cost could make a few billion dollars trivial. Damage from Fukushima has been estimated in the hundreds of billions of dollars.

It is an aging plant - designed in the 1960s with construction completed in the 1980s. Anticipating imminent closure, maintenance has been deferred, waivers granted, and key employees gone. It is becoming increasingly more dangerous. This nuclear plant should be shut down as soon as possible; there is nothing smart about continuing to operate it.

Allowing Diablo to run beyond its current licenses would produce hundreds of tons more high level radioactive waste, dangerous for half a million years, and for which there is still no safe place to store it long term. Continued operation adds additional risk and cost.

There is no concern about replacement power when the plant closes. The August 2020 outage had almost nothing to do with planning or generator capacity. It was due primarily to CAISO's market structure which failed at every point. Here is their own summary:

Energy market practices contributed to the inability to obtain additional energy that could have alleviated the strained conditions on the CAISO grid on August 14 and 15. The contributing causes identified at this stage include: under-scheduling of demand in the day-ahead market by scheduling coordinators, convergence bidding masking the tight supply conditions, and the configuration of the residual unit commitment market process.

Root Cause Analysis, Mid-August 2020 Extreme Heat Wave, Jan 2021, CAISO, CPUC, CEC, p.113

The problem was NOT about the heat wave and needing additional power plants.

On April 15, 2022, the CPUC wrote a letter to the editor in the Capitol Weekly with the assurance that “the State has ordered an unprecedented amount of new clean energy procurement—11.5 gigawatts—to replace the retirement of Diablo Canyon (along with other aging gas plants that are retiring). This includes wind, solar, batteries, geothermal, and long duration storage that will be online starting in 2023.

The federal program offering $6 billion dollars to qualified plants would likely not cover the amount of money required to bring Diablo into compliance with NRC and State agency regulations - hearings, proceedings, lawsuits, construction of cooling towers, environmental reports, and repairs. That money would be better spent invested in clean and safe energy resources, conservation, and efficiency.

Governor Newsom, respect the Joint Settlement Agreement signed by Pacific Gas & Electric Company and approved by the California Public Utilities Commission. Diablo Canyon is dangerous, dirty, and expensive. It must retire as planned in 2024 and 2025.


Signed by 67 organizations from across the country,


San Luis Obispo Mothers for Peace,

Committee to Bridge the Gap,

Nuclear Information and Resource Service,

Beyond Nuclear,


Santa Lucia Sierra Club,

Samuel Lawrence Foundation,

CODEPINK Women for Peace, SF Bay Area,

Nuclear Energy Information Service (NEIS),

World Business Academy,

Women's International League for Peace and Freedom US,

Women’s International League for Peace and Freedom, Santa Cruz Branch,

Nuclear Watch South,

Redwood Alliance,

Green Party of California,

Green Party of Sonoma County

SLO Clean Water,

Physicians for Social Responsibility,

Physicians for Social Responsibility/Los Angeles,

Physicians for Social Responsibility/Sacramento,

Oregon Physicians for Social Responsibility,

Physicians for Social Responsibility/Maine,

Physicians for Social Responsibility/Arizona,

Physicians for Social Responsibility/Wisconsin,

San Francisco Bay Physicians for Social Responsibility,

Chesapeake Physicians for Social Responsibility,

Mid-Missouri Peaceworks,

Concerned Citizens for Nuclear Safety, 

Gender and Radiation Impact Project, 

Responsible Government Action Group 

Biodiversity First!

Snake River Alliance,

Sustainable Energy & Economic Development,

Unitarian Universalists San Luis Obispo,

Occupy Bergen County,

Peace Farm,

Committees for Land, Air, Water & Species,

Dallas Peace and Justice Center, Nuclear Free World Committee,

Indivisible: Rapid Response Team SLO, [email protected] 

Green State Solutions

Abalone Alliance Safe Energy Clearinghouse,

Oregon Conservancy Foundation

Ecologistics, Inc.,

Tri-Valley CAREs,

Citizens' Resistance at Fermi Two (CRAFT),

Erwin Citizens Awareness Network 

Positive Discipline Community Resources,

Alternate Energy Resource Network,

Ohio Nuclear Free Network,

SLO Beaver Brigade,

Earth Day Alliance, Inc.,

Radiation Truth,

Friends of Dutra Creek

Frey Vineyards Ltd,

Coalition Against Nukes

Citizens for Alternatives to Radioactive Dumping (CARD),

Vermont Yankee Decommissioning Alliance

Los Angeles Alliance for Survival

Farm to Crag

The Allison Center for Peace,

North County Watch,

No Nukes Action,

Information Press,

Atascadero United Methodist Church,

Proposition One Campaign for a Nuclear-Free Future,

Michigan Stop the Nuclear Bombs Campaign

New England Coalition on Nuclear Pollution, Inc.,