Diablo Canyon Power Plant
A two-unit pressurized water reactor plant near San Luis Obispo, California, operated by PG&E. It is the state’s last operating nuclear power plant, with closure now delayed beyond the original 2025 target.
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Contracts & Procurement
DOE awards PG&E $271 million to keep Diablo Canyon in service
The Department of Energy has awarded Pacific Gas & Electric a $271 million award to help the company keep California-based Diablo Canyon Power Plant in operation, the department said last week. The award was granted under DOE’s Civil Nuclear Credit Program, a $6 billion investment fund to support the continued operation of the existing nuclear […]
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Reactor Licensing & Regulation
NRC renews Diablo Canyon’s license for 20 more years
The Nuclear Regulatory Commission on April 2 renewed the operating licenses for Pacific Gas & Electric Company’s Diablo Canyon Units 1 and 2 in San Luis Obispo County, Calif. Diablo Canyon’s Unit 1 operating license will now expire in November 2044 and Unit 2 in August 2045. PG&E filed for an NRC license renewal in […]
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Reactor Licensing & Regulation
NRC renews Diablo Canyon’s license for 20 more years
The Nuclear Regulatory Commission on April 2 renewed the operating licenses for Pacific Gas & Electric Company’s Diablo Canyon Units 1 and 2 in San Luis Obispo County, Calif. Diablo Canyon’s Unit 1 operating license will now expire in November 2044 and Unit 2 in August 2045. PG&E filed for an NRC license renewal in […]
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Reactor Licensing & Regulation
Diablo Canyon clears major licensing hurdle with state approval
The license extension request for the Diablo Canyon Nuclear Plant recently received a key approval from a California state agency. On Dec. 11, the California Coastal Commission voted 9-to-3 to allow Pacific Gas & Electric’s (PG&E) Diablo Canyon permission to continue running through 2030. Along with the approval, PG&E must take substantial measures mitigating the […]
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Reactor Licensing & Regulation
Diablo Canyon clears major licensing hurdle with state approval
The license extension request for the Diablo Canyon Nuclear Plant recently received key approval from a California state agency. On Dec. 11, the California Coastal Commission voted 9-to-3 to allow Pacific Gas & Electric’s (PG&E) Diablo Canyon permission to continue running through 2030. Along with the approval, PG&E must take substantial measures mitigating the plant’s […]
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Reactor Licensing & Regulation
Diablo Canyon’s licensing renewal effort hits a wall
The future of Diablo Canyon Nuclear Power Plant in California is uncertain after a state agency denied a key approval necessary for its continued operation until 2030. At the California Coastal Commission Nov. 6 meeting, the agency denied Pacific Gas and Electric’s (PG&E) request for a coastal development permit as the agency said it needed […]
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Reactor Licensing & Regulation
Diablo Canyon’s licensing renewal effort hits a wall
The future of Diablo Canyon Nuclear Power Plant in California is uncertain after a state agency denied a key approval necessary for its continued operation until 2030. At the California Coastal Commission Nov. 6 meeting, the agency denied Pacific Gas and Electric’s (PG&E) request for a coastal development permit as the agency said it needed […]
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Reactor Licensing & Regulation
Environmental group urges Padilla to intercede with NRC on Diablo Canyon seismic risk
A California-based environmental group wants Sen. Alex Padilla (D-Calif.) to fight the Nuclear Regulatory Commission’s recent decisions to forgo additional seismic risk evaluation at the Diablo Canyon Power Plant in California. Diablo Canyon is a two-unit nuclear plant based in San Obispo, Calif. and operated by Pacific Gas and Electric. The company submitted a license […]
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Recommissioning & Restarts
Enviros drop lawsuit over federal bailout of Diablo Canyon
Friends of the Earth this week withdrew a federal lawsuit seeking to stop payment of $1.1 billion federal bailout of California’s last nuclear power plant, court papers show. The judge in the case on Thursday dismissed the suit without prejudice, meaning the environmentalists could sue again. The group dropped the suit, filed in April, after […]
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Recommissioning & Restarts
Enviros drop lawsuit over federal bailout of Diablo Canyon
Friends of the Earth on Wednesday withdrew a federal lawsuit seeking to stop payment of $1.1 billion federal bailout of California’s last nuclear power plant, court papers show. The group dropped the suit, filed in April, after Diablo Canyon Owner Pacific Gas & Electric Co. (PG&E) revealed Jan. 6 that its plans to extend the […]
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Recommissioning & Restarts
California state body approves rate increase for Diablo Canyon life extension
The California Public Utilities Commission last week approved $723 million in rate increases to let Pacific Gas & Electric Co. keep the state’s last nuclear power plant open through 2025, media reported. The increases would cover operations of the Diablo Canyon Nuclear Power Plant from Sept. 1, 2023 through Dec. 21, 2025. The California Public […]
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Commercial Decommissioning
Judges question environmentalists’ legal recourse in fight about Diablo Canyon Unit 1 vessel
Federal judges on Monday worried that the owner of California’s last nuclear power plant has not checked the condition of a reactor core for more than a decade but questioned whether environmentalists had grounds to force such a check. “Your argument from practicality and so on is really disturbing,” Marsha Berzon, a senior judge in […]
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Commercial Decommissioning
Judges question environmentalists’ legal recourse in fight about Diablo Canyon Unit 1 vessel
Federal judges on Monday worried that the owner of California’s last nuclear power plant has not checked the condition of a reactor core for more than a decade but questioned whether environmentalists had grounds to force such a check. “Your argument from practicality and so on is really disturbing,” Marsha Berzon, a senior judge in […]
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Reactor Licensing & Regulation
NRC will review seismic risks at Diablo Canyon, but not close plant, in partial victory for enviros
There is “no imminent safety concern” of earthquakes severely damaging the Diablo Canyon Power Plant, but the Nuclear Regulatory Commission will review the possibility, staff told environmental groups last week. Commission staff will conduct their review “within a reasonable time,” according to a letter sent Aug. 27 to attorneys representing three environmental groups from Michael Franovich, acting […]
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Reactor Licensing & Regulation
NRC will review seismic risks at Diablo Canyon, but not close plant, in partial victory for enviros
There is “no imminent safety concern” of earthquakes severely damaging the Diablo Canyon Power Plant, but the Nuclear Regulatory Commission will review the possibility, staff told environmental groups last week. Commission staff will conduct their review “within a reasonable time,” according to a letter sent Aug. 27 to attorneys representing three environmental groups from Michael […]
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Reactor Licensing & Regulation
Environmentalists will not get Diablo Canyon do-over in Ninth Circuit
Federal judges in August decided not to let environmentalists opposed to the restart of the Diablo Canyon Nuclear Power Plant reargue their case before an entire appeals court. The judges did not give a reason for their ruling in a decision published Aug. 5 on the online docket for the case in the U.S. Ninth […]
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Reactor Licensing & Regulation
No hearing for enviros about Diablo Canyon renewal request, licensing board says
Environmental groups had standing to challenge a utility’s request to renew its operating license for California’s Diablo Canyon Nuclear Power Plant but the groups’ complaints are inadmissible, a Nuclear Regulatory Commission board ruled. “With this Order, we chronicle yet another chapter in the ongoing narrative of the Diablo Canyon Nuclear Power Plant,” the Atomic Safety […]
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Reactor Licensing & Regulation
No hearing for enviros about Diablo Canyon renewal request, licensing board says
Environmental groups had standing to challenge a utility’s request to renew its operating license for California’s Diablo Canyon Nuclear Power Plant but the groups’ complaints are inadmissible, a Nuclear Regulatory Commission board ruled. “With this Order, we chronicle yet another chapter in the ongoing narrative of the Diablo Canyon Nuclear Power Plant,” the Atomic Safety […]
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Budget & Policy
Newsom signs bill to boost PG&E’s Diablo Canyon life-extension loan
California Gov. Gavin Newsom (D) this week signed a bill that would give Pacific Gas & Electric $400 million more to keep the Diablo Canyon Power Plant open for the rest of the decade. Newsom signed the bill June 29, days after the state legislature passed it. The funding, which Newsom proposed, is part of the […]
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Budget & Policy
Newsom has bill to boost PG&E’s Diablo Canyon life-extension loan
The California legislature last week passed a bill that would give Pacific Gas & Electric $400 million more to keep the Diablo Canyon Power Plant open for the rest of the decade. The funding, which Gov. Gavin Newsom (D) proposed, is part of the state’s annual budget bill. The legislature initially rejected Newsom’s proposal to […]
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Reactor Licensing & Regulation
NRC scheduled July meeting to consider enviros’ request to shut down Diablo Canyon
Nuclear Regulatory Commission staff on July 17 will hold a virtual public meeting about a California-based environmental group’s request to shut down the Diablo Canyon Nuclear Power Plant, the commission said June 21. The comment-gathering meeting was scheduled to begin at 3:00 p.m. Eastern time. The public may join via Microsoft Teams to observe interactions […]
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Budget & Policy
Compromise California budget bill for 2025 has $400 million more for Diablo Canyon
Pacific Gas & Electric would get $400 million more to help keep California’s last nuclear power plant open for another five years, if a state budget bill unveiled over the weekend becomes law. In a reversal for legislative leaders who opposed the funding as recently as June, the compromise spending bill would allow California to top up […]
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Budget & Policy
Compromise California budget bill for 2025 has $400 million more for Diablo Canyon
Pacific Gas & Electric would get $400 million more to help keep California’s last nuclear power plant open for another five years, if a state budget bill unveiled over the weekend becomes law. In a reversal for legislative leaders who opposed the funding as recently as June, the compromise spending bill would allow California to […]
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Reactor Licensing & Regulation
NRC scheduled July meeting to consider enviros’ request to shut down Diablo Canyon
Nuclear Regulatory Commission staff on July 17 will hold a virtual public meeting about a California-based environmental group’s request to shut down the Diablo Canyon Nuclear Power Plant, the commission said Friday. The comment-gathering meeting was scheduled to begin at 3:00 p.m. Eastern time. The public may join via Microsoft Teams to observe interactions between […]
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Reactor Licensing & Regulation
Court will let Diablo Canyon relicensing continue at NRC, thwarting enviros
The Nuclear Regulatory Commission can let the Diablo Canyon Nuclear Power Plant operate past the expiration of its federal license while the plant owner applies for a license renewal, a federal court ruled Monday. Pending a rehearing of the full Ninth Circuit or an appeal to the Supreme Court of the United States, an independent […]
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Reactor Licensing & Regulation
Court will let Diablo Canyon relicensing continue at NRC, thwarting enviros
The Nuclear Regulatory Commission can let the Diablo Canyon Nuclear Power Plant operate past the expiration of its federal license while the plant owner applies for a license renewal, a federal court ruled Monday. Pending a rehearing of the full Ninth Circuit or an appeal to the Supreme Court of the United States, an independent […]
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Reactor Licensing & Regulation
Environmentalists sue to block DOE’s $1B Diablo Canyon bailout
A federal bailout of Diablo Canyon Power Plant should be paused because the government did not properly review the environmental effects of keeping the plant open, environmentalists said in a lawsuit filed this week. The bailout came from the Department of Energy’s Civilian Nuclear Credits Program and was contingent on DOE completing an environmental impact […]
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Recommissioning & Restarts
San Luis Obispo County Board narrowly approves resolution supporting Diablo Canyon
The San Luis Obispo County Board on Wednesday passed a resolution supporting a life extension for the local Diablo Canyon Nuclear Power Plant by a vote of 3-2. Voting yes were Supervisors Dawn Ortiz-Legg (District 3), Debbie Arnold, the chair, (District 5) and John Peschong (District 1). Voting no were Supervisors Bruce Gibson (District 2) […]
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Recommissioning & Restarts
Local government to formally support Diablo Canyon life-extension
The San Luis Obispo County Board of Supervisors planned to consider a resolution supporting a life extension for nearby Diablo Canyon during a meeting scheduled for Wednesday morning. The board was to consider “a resolution that supports operation of Diablo Canyon Power Plant for 20 years,” according to an item on the agenda for the […]
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Recommissioning & Restarts
Enviros file for hearing request on Diablo Canyon life extension
Environmental groups this week requested a hearing over Pacific Gas & Electric’s plan to renew its Nuclear Regulatory Commission operating licenses for the Diablo Canyon Nuclear Power Plant’s two reactors. San Luis Obispo Mothers for Peace, Friends of the Earth and Environmental Working Group filed their hearing request on Monday. The state of California has […]






