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Oklo Announces DOE Approval for Nuclear Safety Design Agreement of Aurora Powerhouse at Idaho National Lab

LCG, March 17, 2026--Oklo Inc. (Oklo) today announced that it has signed a U.S. Department of Energy (DOE) Other Transaction Agreement (OTA) to support the design, construction, and operation of Oklo’s first reactor, the Aurora powerhouse at Idaho National Laboratory (INL) under DOE’s Reactor Pilot Program (RPP). The DOE Idaho Operations Office subsequently approved the Nuclear Safety Design Agreement (NSDA) for the fast-fission power plant, and Oklo immediately requested DOE commence review of its Preliminary Documented Safety Analysis (PDSA).

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SPP's Western Expansion Set for Implementation on April 1

LCG, March 13, 2026--The Southwest Power Pool (SPP) announced yesterday that leaders from the participating organizations voted unanimously to proceed as planned with expanding its regional transmission organization (RTO) services into the Western Interconnection. SPP sees the decision to proceed as planned as a strong signal of confidence as SPP and its partner utilities prepare for this key milestone, which will occur overnight between March 31 and April 1.

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Industry News

AmerenUE Halts Plans for New Reactor at Callaway

LCG, April 24, 2009--AmerenUE yesterday announced its plans to install another
nuclear reactor at the Callaway Plant in Missouri are now on hold, as state
legislative changes desired by the utility are not proceeding as expected.

AmerenUE was relying upon legislative changes that would allow for a utility to
recover project costs from consumers prior to project completion and start-up. Without the change in the law, and given the current credit-constrained markets, AmerenUE stated that it believes getting financial backing for the multi-billion dollar project is impossible.

The existing Callaway Plant consists of a single reactor that has a net generating
capacity of 1,126 MW and began service December 1984. The site is located about
twenty-five miles northeast of Jefferson City and was initially developed with the
idea of adding a second unit in the future.

In 2007, AmerenUE announced that the company had signed an agreement with UniStar
Nuclear Energy to help prepare a combined operating license (COL) application.

AmerenUE submitted a COL application to the Nuclear Regulatory Commission (NRC) on
July 28, 2008 to add a second reactor at its Callaway Plant. The application incorporated AREVA's U.S. Evolutionary Power Reactor (EPR), which is a pressurized water reactor with a nominal electric output of approximately 1,600 MW. The NRC accepted the application for review in December 2008.
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