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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

Calpine Buys Geothermal Assets in Northern California

LCG, Oct. 31, 2001--Calpine Corp. yesterday announced it had acquired two subsidiaries of Mid-American Energy Holding Co. and in the process got the companies' geothermal resource assets, contracts, leases and development opportunities associated with the Glass Mountain Known Geothermal Resource Area in Siskiyou County, Calif., near the Oregon border.

Financial details of the deal were not disclosed.

Before the acquisition of California Energy General Corp. and CE Newberry Inc., Calpine owned about 40 percent of the leases in the 66-square-mile area, and says that the two acquisitions give it "essentially all" of the development rights within the Glass Mountain area.

Calpine said the purchases are directly related to its plans to develop the 49.5 megawatt Fourmile Hill Geothermal Project located in the Glass Mountain area. Power from the project, which is in advanced development and is projected to be online by late 2004, is committed to Bonneville Power Administration under a 20-year contract.

Fourmile Hill has also qualified for a California Energy Commission renewable energy production incentive which is valid for the first five years of the facility's operation and is valued at up to $21 million, Calpine said.

"We are pleased with the initial resource data and are confident about the potential of the Glass Mountain (area) as a new green power resource," said John Miller, Calpine vice president of program development. "This transaction strengthens our commitment to renewable energy and reflects Calpine's strategy to manage the entire geothermal resource. In doing so, we will be better positioned to optimize power production and effectively coordinate the power production with other important uses of the area."

Calpine has been involved in geothermal power production since 1985 and, through its operations at The Geysers north of San Francisco, generates about 850 megawatts, making the company the largest producer of electricity from renewable geothermal resources in the world.

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