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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

Unistar Nuclear Energy Engages AREVA-Bechtel Power

LCG, February 5, 2008--UniStar Nuclear Energy, a joint venture between Constellation Energy and the EDF Group, yesterday announced that it has engaged an AREVA-Bechtel Power consortium to start developing the detailed design engineering for UniStar's proposed fleet of advanced nuclear power plants in the United States.

The announcement indicates both growing momentum and commitment by Unistar to develop a fleet of nuclear reactors using AREVA's U.S. Evolutionary Power Reactor (U.S. EPR) design, which is a Generation III+ design based upon AREVA's 1,600-MW, European EPR now being deployed in Europe. In December, AREVA filed its design certification application for the U.S. EPR with the Nuclear Regulatory Commission (NRC). AREVA expects the Design Certification application will be validated by 2010, which would enable a U.S. EPR to be licensed and ready for operation as early as 2015.

UniStar is working to develop U.S. EPRs at a number of sites. Unistar is using the U.S. EPR design in its plans to build a nuclear reactor at Constellation Energy's existing Calvert Cliffs Nuclear Power Plant in Lusby, Maryland. In July 2007 Unistar filed the environmental report portion of a combined construction and operating license (COL) application with the NRC to build the reactor, and Unistar plans to submit the remainder of the application in early 2008. On January 25, the NRC accepted for detailed review UniStar's partial COL application. UniStar plans to submit the remaining portions of the COL application in March.

In December 2007, PPL Corporation announced that it contracted with Unistar to prepare a COL application with one of its subsidiaries to submit to the NRC for approval to build and operate a nuclear reactor using AREVA's U.S. EPR design. The reactor would be built near the Susquehanna nuclear power plant in Pennsylvania. The existing Susquehanna facility is jointly owned by PPL Susquehanna, LLC and Allegheny Electric Cooperative Inc. and is operated by PPL Susquehanna. The application will be submitted by the end of 2008.
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