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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

SCE Submits Technical Responses to NRC Regarding SONGS

LCG, February 28, 2013--Southern California Edison (SCE) announced that it submitted on Monday new information requested by the Nuclear Regulatory Commission (NRC) to further progress towards restarting San Onofre Nuclear Generating Station (SONGS) Unit 2 and to address current compliance with the plant's technical specifications.

SONGS is a critical generating asset in California. Unit 2, with a capacity of approximately 1,180 MW, has been unavailable since January 2012 following the identification of cracks in steam generator tubes. Unit 3 was removed from service shortly thereafter, following the discovery of a leak in a steam generator tube. Further inspections show Unit 3 had more than 300 tubes with unexpected tube-to-tube wear; Unit 2 only had two tubes exhibiting minor tube-to-tube wear.

SCE's supplemental information delivered early this week adds to the comprehensive analysis and restart proposal submitted last October in response to an NRC Confirmatory Action Letter (CAL).

The new submittal provides information about how SCE anticipates addressing ongoing steam generator analysis and interim measures beyond the operating period proposed in SCE's response to the CAL. SCE has proposed restarting Unit 2 at 70 percent power for five months to prevent the conditions that caused excessive tube wear in the steam generators. Furthermore, SCE plans to provide an additional evaluation by March 15, 2013 to demonstrate that structural integrity can be met for Unit 2 at 100 percent rated thermal power.

SCE's senior vice president and chief nuclear officer stated, "This question and answer process is an important part of safety-based technical solutions in the nuclear industry, and it strengthens our ability to communicate to all stakeholders the safety principles and proven industry operating experience that the Unit 2 restart plan was built upon."

SCE anticipates that a decision from NRC may be issued in the late April to May time frame, prior to the summer peak load.

SONGS is jointly owned by SCE (78.21 percent), San Diego Gas & Electric (20 percent) and the City of Riverside (1.79 percent).
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