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X-energy Commences First Irradiation Tests of Advanced TRISO-X Nuclear Fuel at Idaho National Laboratory

LCG, November 6, 2025--X-energy Reactor Company, LLC, (X-energy) and the U.S. Office of Nuclear Energy today announced the start of confirmatory irradiation testing at Idaho National Laboratory (INL) to qualify X-energy’s proprietary TRISO-X fuel pebbles for commercial use in the Xe-100 Small Modular Reactor (SMR). (TRISO stands for TRi-structural ISOtropic). This is the first time that TRISO-X fuel pebbles will undergo irradiation testing in a U.S. lab, which is a critical step in meeting requirements set forth by the U.S. Nuclear Regulatory Commission (NRC) for the commercial deployment of advanced reactors that will use the fuel.

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NextEra Energy and Google Collaborate on Accelerating Nuclear Power Deployment

LCG, October 28, 2025--NextEra Energy and Google yesterday announced two agreements that will help meet growing electricity demand from artificial intelligence (AI) with clean, reliable, 24/7 nuclear power and strengthen the nation's nuclear leadership. First, Google signed a new, 25-year agreement for power generated at the Duane Arnold Energy Center, Iowa's only nuclear power facility. The 601-MW boiling water reactor unit was shut down in 2020 and is expected to commence operations by the first quarter of 2029, pending regulatory approvals to restart the plant.

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Industry News

Czech Temelin Trips During Cooling System Test

LCG, Nov. 20, 2000--The reactor at the Temelin nuclear power plant in the Czech Republic automatically shut itself down without incident during cooling system tests early Saturday morning, but was restarted later in the day, a plant official said.

Yesterday, the plant was running at 5.2 percent of its potential capacity, up from 2.5 percent last week, according to Milan Nebesar, a Temelin spokesman

At 3:00 a.m. on Saturday, a signal sent out during a test of the cooling system in the plant's reactor was falsely interpreted by the automatic control system, according to Pavel Pitterman, a spokesman for the Czech Nuclear Safety Office. "Nothing serious occurred," Pitterman said, adding that details surrounding the incident would be known today when the whole procedure would be repeated.

"There was no accident and no anomaly," Nebesar said, adding that a detailed report on the incident had been sent to government officials in neighboring Austria.

After Temelin's reactor reaches commercial operation next year, work will begin to prepare a second reactor for its start-up. When both units are operational, expected in 2002, the plant will supply around 20 percent of the electricity needs of the Czech Republic.

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