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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

World Record Goes to Sioux Plant

LCG, April 2, 2002-Ameren's 34-year-old Unit 2 of the Sioux plant broke the world record for continuous operation of a plant of its kind.

Located in St. Charles, Missouri, the cyclone-fired supercritical boiler unit made it to its 246th day of continuous operation yesterday and then went off-line for maintenance. The next best record, that of a Tennessee Valley Authority unit, is 194 days.

Sioux's Unit 2, located on the Mississippi River some 28 miles from St. Louis, can consume petroleum coke, coal and tire chips, and has generated 5,960,000 megawatt-hours over its lifetime.

Ameren serves 1.5 million customers in Illinois and Mississippi.

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