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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

Entergy Joins Proposed Southeast RTO

LCG, Nov. 21, 2001--Entergy Corp. said yesterday that it has joined the proposed SeTrans Grid Co. regional transmission organization, a new RTO that would serve the Southeastern U.S. and is backed by The Southern Co., which provides power to nearly 4 million customers in Georgia, Florida, Alabama, and Mississippi.

While the Federal Energy Regulatory Commission has said it favors consolidation of the nation's grid operators into four regional RTOs, utilities in the Southeast are reluctant to go along. Southern has said that several small independent system operators would serve the region better.

Southern has also said that setting up one huge regional network to provide what FERC calls "seamless" transmission access and market operations to all participants would require expensive transmission system upgrades that would be passed on to customer's power bills.

Yesterday, Entergy said the SeTrans model "is the best platform to achieve the mutual goals of the various involved companies."

The companies filed a status report on the RTO plan with FERC yesterday, including the information that Entergy has joined SeTrans.

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