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Oklo and Siemens Energy Sign Agreement to Accelerate Power Conversion System for New SMR in Idaho

LCG, November 19, 2025--Oklo Inc. and Siemens Energy announced today that the parties have signed a binding contract for the design and delivery of the power conversion system for Oklo’s Aurora-INL (Idaho National Laboratory) nuclear small modular reactor (SMR). The agreement authorizes Siemens Energy to begin engineering and design work to expedite procurement of long-lead components and to initiate the manufacturing process for the power conversion system. Oklo’s expertise in advanced fission technology will be combined with Siemens Energy’s extensive industry experience with steam turbine and generator systems, with the ultimate goal of generating carbon-free, reliable electricity.

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NERC's New Winter Reliability Assessment Raises Concerns for Elevated Risk of Insufficient Supplies to Meet Demand in Extreme Operating Conditions

LCG, November 19, 2025--NERC yesterday released its 2025–2026 Winter Reliability Assessment (WRA), which concludes "much of North America is again at an elevated risk of having insufficient energy supplies to meet demand in extreme operating conditions." The WRA does state that resources are adequate for normal winter peak demand, but extended, wide-area cold snaps will be challenging.

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Industry News

Chubu Electric Shuts Reactor after Leak

LCG, Nov. 13, 2001--Chubu Electric Power Co. said this morning it will suspend operation of a reactor at a nuclear plant in the town of Hamaoka, Japan, because of a radioactive water leak in another reactor, Kyodo News Service reported.

According to company officials, the 840 megawatt Unit 2 reactor at the nuclear complex will be shut down this evening and remain off-line for at least 24 hours. This unit uses the same materials as the 540 megawatt Unit 1, in which a radiation water leakage was discovered near a nuclear pressure vessel Friday.

After the leak was publicly announced over the weekend, Shizuoka Prefecture Gov. Yoshinobu Ishikawa requested that Chubu inspect its other nuclear reactors in addition to Unit 1. Citizens' groups also called for the company to suspend operation of the Unit 2 reactor after the accident.

Hamaoka Nuclear Power Station has four boiling water reactors with a combined capacity of about 3,617 megawatts.

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