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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

Luminant Allowed to Mothball Nearly 1,200 MW of Coal-fired Generation in Texas

LCG, November 1, 2012--The Electric Reliability Council of Texas (ERCOT) approved Luminant's proposal to mothball two coal-fired electric generating units at the Monticello Power Plant, located in northeastern Texas. ERCOT concluded the two units will not be necessary to ensure grid reliability through the upcoming winter and spring.

Luminant will mothball Monticello 1 and 2 commencing on December 1 for six to seven months. The capacity of each unit is 583 MW; Monticello 3, with a capacity of 763 MW, will remain available to produce power. The plant burns lignite, supplemented by Powder River Basin coal.

The units are approaching their 40-year anniversaries; Units 1, 2, and 3 commenced operations in 1974, 1975, and 1978, respectively.

According to Luminant, wholesale power prices are too low to support the costs required to keep the units available and to generate power.

In order to maintain reliable power resources, Texas regulators are taking some action to encourage new generation to be built and/or to defer retirement of existing generation. Last Thursday, the Texas Public Utility Commission voted to increase the price cap on wholesale electricity from $4,500/MWh, starting in June 2013. Initially, the cap will increase to $5,000/MWh, with subsequent annual increases reaching $9,000/MWh on June 1, 2015.
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