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[Desperate Gavin Newsom...] California energy officials vote to extend Diablo Canyon nuclear plant operations

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Leroy N. Soetoro

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Dec 29, 2023, 4:31:29 PM12/29/23
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https://www.latimes.com/environment/story/2023-12-14/california-energy-
officials-vote-to-extend-diablo-canyon-operations

California energy officials have voted to extend the operation of the
Diablo Canyon Power Plant through 2030, extending the life span of the
state’s last nuclear plant an additional five years.

The California Public Utilities Commission approved a proposal to keep
Diablo Canyon’s twin reactors online, overturning an earlier agreement to
close the plant in 2025.

Three commissioners — Alice Busching Reynolds, John Reynolds and Karen
Douglas — voted in favor. Commissioner Darcie Houck abstained and
Commissioner Genevieve Shiroma was absent.

Thursday’s decision is expected to preserve a large bloc of the state’s
zero-emission power supply. But it also raises concerns over the high cost
and potential safety issues associated with operating an aging nuclear
power plant.

The state utilities commission acknowledged that the costs associated with
the plan were still unknown but were expected to exceed $6 billion. A
federal safety review will also be conducted.

State energy commissioners emphasized that the extension should serve as a
bridge to renewable energy and that the plant was not expected to operate
beyond 2030. The decision, they said, was intended to bolster the
reliability of California’s grid, which has narrowly avoided rolling
blackouts during heat waves in recent years.

“The short-term extension of the power plant as proposed is a transitional
strategy to help California weather the challenges of the energy
transition, including the weather and climate extremes that we have
experienced ... and the cost challenges that we face in scaling up the
clean energy transition so quickly,” Douglas said ahead of the vote. “So
this is an opportunity for us to help bridge some years.”

Pacific Gas & Electric Co., the plant’s operator, lauded the commission’s
decision, saying it will help provide the state with a dependable,
emission-free source of energy.

“We’re grateful for the opportunity to answer the state’s call to ensure
electrical reliability for Californians,” said Suzanne Hosn, a
spokesperson for PG&E.

At a state meeting filled with heated discourse, supporters argued that
California needed the power supply from Diablo Canyon to avert outages and
meet the state’s climate goals. The plant supplies about 9% of the state’s
electricity and 17% of the state’s zero-emission power.

“It was methodically determined that Diablo Canyon is in fact integral to
the California electricity reliability,” said Brendan Pittman, a Berkeley
resident, who supported the proposal. “It contributes substantially to
California’s zero-emission targets and the costs for continued operation
are not, quote, too high to justify.”

But a chorus of critics warned that the extension could bring rate hikes
from PG&E.

Opponents also argued that the plant’s proximity to several fault lines
makes it susceptible to earthquakes, and a significant risk.

The plant, which sits along the Pacific Ocean about 10 miles outside of
San Luis Obispo, opened in 1985. A 46-page report by Digby Macdonald, a
professor at UC Berkeley’s Department of Nuclear Engineering, suggested
one of the plant’s nuclear reactors “poses an unreasonable risk to public
health and safety due to serious indications of an unacceptable degree of
embrittlement,” or deterioration due to prolonged exposure to radiation.

“Inside the aging Diablo Canyon reactors resides an astronomical quantity
of radioactivity,” said Daniel Hirsch, a retired director of the Program
on Environmental and Nuclear Policy at UC Santa Cruz. “It only stays
inside if it’s constantly cooled. Any disruption in that, an earthquake or
accident, can cause a meltdown releasing enough radioactivity to
contaminate a substantial portion of California for generations.”

“If you approve overturning the Diablo shutdown agreement, you risk
culpability for a nuclear catastrophe,” he continued.

Gov. Gavin Newsom has argued the state still needs the nuclear plant to
help keep the lights on as global warming drives higher demand for air
conditioning, and as California increasingly relies on solar farms that
stop generating electricity after sundown.

Nuclear power plants do not produce planet-warming CO2 emissions. However,
they do produce radioactive waste from spent nuclear fuel. Exposure to
this waste can damage DNA and increase cancer risk.

The federal government has long delayed its plans to establish a national
repository for nuclear waste, forcing nuclear plants, including Diablo
Canyon, to keep their waste on site in large steel-and-cement casks.


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