The federal Nuclear Regulatory Commission on Thursday renewed Diablo Canyon’s license to operate, ensuring that California’s last remaining nuclear facility will continue to run through at least 2030. The plant was originally slated to close in 2025, but lawmakers extended the deadline by five years in 2022, citing ongoing need for power from a plant that provides more than 8% of the state’s electricity. The approval from the body that regulates nuclear reactors and waste marks the final hurdle in Pacific Gas and Electric’s multi-year journey to gather the necessary state and federal permits to keep its facility online. Last December, PG&E received a key permit from the California Coastal Commission by agreeing to give up 12, 000 acres of nearby land for conservation in exchange for the loss of marine life caused by the plant’s operations. Another key step took place in February, when the Central Coast Regional Water Board approved waste discharge permits for the plant and granted a certification under the Clean Water Act, the last step required before the Nuclear Regulatory Commission (NRC) could issue its final approval. The license renewal from the Commission allows the plant to remain running for 20 years, although extending it past 2030 would require additional action from the California legislature. “Today’s milestone reminds us that when discipline, science, responsibility and vision all come together, we can build an energy future that is both sustainable and secure,” said NRC Office of Nuclear Reactor Regulation acting director Jeremy Groom at a signing ceremony. Already this year some lawmakers and regulators have expressed interest in extending the plant’s life through 2045, citing growing electricity demand and the plant’s central role in helping the state meet its climate goals by providing carbon-free power to the grid. Groups that oppose the plant want to make sure that doesn’t happen. Last week on March 26, the California Coastkeeper Alliance filed a petition asking the California State Water Resources Control Board to throw out the facility’s water discharge permit. The group alleged that the Central Coast Regional Water Board illegally allowed the facility to continue operating without technology required under the federal Clean Water Act to protect marine life.
https://www.latimes.com/environment/story/2026-04-02/la-enviro-diablo-canyon-final-clearance
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