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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

Exelon Announces Early Retirement of Nearly 3,000 MW of Carbon-Free Nuclear Capacity

LCG, June 3, 2016--Exelon Corporation yesterday announced that it will close two nuclear plants in Illinois, given the lack of progress on Illinois energy legislation. The Clinton Power Station in Clinton will close on June 1, 2017, and the Quad Cities Generating Station in Cordova will close on June 1, 2018. The two plants have lost a combined $800 million in the past seven years, despite being two of Exelon's best-performing plants.

Exelon's president and CEO stated, "This is an extremely difficult day for the 1,500 employees who operate these plants safely and reliably every day, and the communities that depend on them for support. We have worked for several years to find a sustainable path forward in consultation with federal regulators, market operators, state policymakers, plant community leaders, labor and business leaders, as well as environmental groups and other stakeholders. Unfortunately, legislation was not passed, and now we are forced to retire the plants."

The Clinton Power Station began commercial operation on April??1987 under the ownership of Illinois Power. The plant includes a single boiling water nuclear reactor, with a generating capacity of approximately 1,080??MW. The present reactor operating license was issued April 17, 1987 and will expire September 29, 2026.

The Quad Cities Generating Station is a nuclear power plant, with a total electric generating capacity of approximately 1,870 MW. The units began operations in 1972. In 2004, the Nuclear Regulatory Commission (NRC) approved a 20-year license extension for both reactors that would extend the license through December 14, 2032.

The Illinois legislative session has not ended; however, the path forward for consideration of the Next Generation Energy Plan legislation is not clear. Thus Exelon has initiated the necessary steps to shut down the two nuclear plants. These steps include: making permanent shutdown notifications to the NRC within 30 days; terminating capital investment projects required for long-term operation of the plants; immediately taking one-time charges of $150 million to $200 million for 2016, and accelerating approximately $2 billion in depreciation and amortization through the announced shutdown dates; and cancelling fuel purchases and outage planning.

Retiring the plants will have a significant economic and environmental impact on the region.
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