In response to a petition filed by environmental groups earlier this year, the Nuclear Regulatory Commission will reinvestigate earthquake fault lines and the potential for seismic activity and ensuing damage at California’s Diablo Canyon nuclear power plant.

In budget discussions conducted last week, the California legislature rejected a $400 million budget item to help keep the state’s sole remaining nuclear plant operational.

Diablo Canyon—owned by Pacific Gas & Electric—has been the subject of much debate in California. To meet grid demands during a record hot summer in 2022, Gov. Gavin Newsom had cut a deal to give $1.4 billion to support continued operations at the 2,200-MWe nuclear facility.

Over the past couple of months, the nuclear community has participated in a grassroots effort to save the Diablo Canyon nuclear power plant from premature closure—and it appears to be having an effect. The growing support for keeping Diablo Canyon open is seen in editorials, an academic study from Stanford/MIT, and a grassroots rally held in December 2021 to show support for keeping Diablo Canyon operating.

La Grange Park, IL – The American Nuclear Society (ANS) has submitted comments to the Federal Energy Regulatory Commission (FERC) in favor of reconsidering the shortsighted decision to shutter prematurely California’s largest clean energy resource, Diablo Canyon nuclear power plant.

ANS filed the comments on Nov. 12 in favor of an Oct. 26 complaint by Californians for Green Nuclear Power against the regulatory approvals of the 2016 decision by Pacific Gas & Electric Co. to permanently shutter Diablo Canyon Units 1 and 2 in November 2024 and August 2025, respectively. The complaint (Docket No. EL21-13-000) asked FERC to investigate whether the decision shuttering Diablo Canyon violates grid reliability standards. ANS agrees with the complaint that FERC ought to consider fully the negative consequences and reliability risks posed by a premature retirement of Diablo Canyon.