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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

LaSalle Unit 2 Refuels in Just Over 20 Days

LCG, Dec. 1, 2000--Exelon Nuclear, the atomic power unit formed by the merger between Unicom Corp. and Peco Energy Co., said yesterday that it had refueled its 1,200 megawatt LaSalle Unit 2 in just over 20 days, a record for the two-unit LaSalle plant.

This morning, LaSalle was at 30 percent of full output and conducting scram time testing -- how long it takes the plant to shut down when something unusual occurs.

LaSalle Unit 2, and nine other reactors formerly operated by Commonwealth Edison Co., were folded into Exelon as a result of the merger, and Oliver Kingsley, president of ComEd's Nuclear Generation Group became head of Exelon Nuclear. The people are the same, but some of the business units have different names.

The refueling was the last of eight performed this fall on Exelon reactors. It will permit LaSalle Unit 2 to operate for the next 24 months.

The previous record at LaSalle was 30 days, and site vice president Charles G. Pardee was pleased. "This outage was the result of exceptional planning and execution by the entire team," he said. "LaSalle is now among the most efficient nuclear plants in the nation."

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