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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

Rule Issued on Connecting Generators to Transmission Grid

LCG, July 23, 2003--The Federal Energy Regulatory Commission intends to minimize the effort spent on negotiations between transmission providers and generators, with the issuance of a final rule specifying what costs are to be paid by either party when a generator with capacity of at least 20 megawatts is connected to the transmission system.

A generator owner connecting to transmission operated by a company that is not independent will need to pay for costs on the generation side of the transmission infrastructure. Upgrades to the transmission side during the would also be paid by the generator owner, although the payments could be refunded by the transmission provider.

Existing interconnection agreements will be maintained as they are currently. Regional transmission organizations will have some flexibility, and could engage in what is called participant funding for the first year of the rule being issued. A rule covering generators below 20 megawatts will be issued shortly, FERC has said.
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