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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

NRC Approves Westinghouse Electric's AP1000 Nuclear Plant Design

LCG, January 4, 2006--The U.S. Nuclear Regulatory Commission (NRC) approved the Design Certification for Westinghouse Electric Company's AP1000 standard nuclear plant design on December 30, 2005. The AP1000 reactors are each able to generate 1,100 MW of electricity. With approval of the new design, which incorporates passive safety features that rely upon natural forces, the nuclear industry is poised to begin a new wave of expansion.

The AP1000 has been identified by Duke Power as the basis for its plans to prepare a combined construction and operating license (COL) application to construct two nuclear reactors. Duke Power, a business unit of Duke Energy, plans to identify its preferred site this month and to submit the COL application to the NRC within the next 24-30 months.

NuStart Energy Development, LLC, a consortium formed to support the development of new nuclear reactors, plans to use the AP1000 in its application to the NRC for a COL at the Bellefonte Nuclear Plant (owned by the Tennessee Valley Authority) near Scottsboro, Alabama.

NuStart also plans to prepare and submit an application incorporating the General Electric (GE) Economic Simplified Boiling Water Reactor (ESBWR) at the Grand Gulf Nuclear Station (owned by Entergy Nuclear) in Port Gibson, Mississippi. The GE design is also passive, with a nominal generating capacity of 1,550 MW. GE is trailing Westinghouse with respect to receiving Design Certification from the NRC. GE's application for the ESBWR Design Certification was submitted on August 25, 2005 and accepted as sufficient to be formally docketed and reviewed on December 2, 2005.

The development of new nuclear reactors is especially prevalent in the Southeast. Utilities, including Southern, Progress, SCANA, Santee Cooper, Duke, Entergy, and TVA have announced plans to add more than 15,000 MW of new nuclear generating capacity in the period from 2015 to 2017.

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