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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

Perry Nuke Completes Best-ever Refueling in 34 Days

LCG, March 26, 2001--First Energy Nuclear Operating Co. said Friday that operators at its Perry nuclear power plant had returned the facility to service that morning, completing the shortest refueling in the plant's 13-year history.

First Energy said the refueling was done in 34 days, shaving three days off the previous best of 37 days set in May 1999. The 1,320 megawatt reactor was operating at 29 percent of capacity this morning, according to the Nuclear Regulatory Commission's daily plant status report. First Energy said output would be gradually increased to 100 percent over the next week or so.

During the outage, major work included replacing 304, or about 40 percent, of the plant's 748 fuel assemblies. The new fuel assemblies are equivalent to more than 75,000 train carloads of coal, the company said. One of the turbine rotors also was modified, allowing for increased power output of 5 percent.

"Our employees met the challenge of safely completing an ambitious work schedule," said JohnWood, site vice president at Perry. "Our team did the right work at the right time to help ensure Perryremains a top performer in the areas of safety and operations."

During its last cycle of 655 days, Perry missed only 11 days' work, posting a 98.2 percent capacity factor.

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