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Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
10,774
MW Offline
Percentage of total fleet capacity currently online and generating power.
88.9%
Fleet Online
Refueling outages scheduled for this season. Each one is a hiring window.
24
Fall 2026 Outages
Units currently at 0% power (likely in an outage or shutdown).
10
Units Offline
Units operating between 1-99% power (excluding known startups or coastdowns).
0
Reduced Power
Units nearing the end of their fuel cycle, gradually lowering power before an outage.
3
Coastdown
Units increasing power following an outage or scram.
0
Starting Up
Units on a qualifying Breaker-to-Breaker run: continuous operation exceeding their cycle-adjusted threshold with no trips to 0% power.
9
Breaker-to-Breaker
Nuclear NewsNEW NN Asks: How can the nuclear industry ensure trust in AI-driven decisions?University researchers recommend framing artificial intelligence tools in nuclear facilities as assistance systems rather than autonomous decision-makers. Under this approach, trained human experts evaluate algorithmic outputs alongside traditional operational data to maintain accountability. This strategy addresses industry concerns regarding transparency and reliability in complex plant environments. This is a really interesting question that we’re already grappling with both in research and industry. A lot of the discussion around the practicality of implementing AI in nuclear includes concepts of trustworthiness, transparency, and explainability. Conceptually, these are all intertwined: An AI that generates explainable results through a… Beyond that, however, we should reframe the prob...
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Core ContentNuclear NewsNEW Solubility-driven process could simplify used fuel reprocessingResearchers at Oregon State University developed a new aqueous reprocessing technique using concentrated ammonium fluoride solutions. The method exploits solubility differences to separate actinides from fission products in simulated used nuclear fuel. Laboratory tests removed roughly ninety percent of radioactivity from the samples. Traditional recycling methods like PUREX are susceptible to radiation damage that degrades processing solutions and increases facility costs. This alternative salt-based approach provides greater radiation resistance and could simplify existing operations. Researc...Core Content
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Nuclear NewsNEW EDEN RADIOISOTOPES ADVANCES $1.4 BILLION NEW MEXICO MEDICAL ISOTOPE PROJECTEden Radioisotopes selected Kiewit Nuclear Solutions and Sargent & Lundy to engineer and construct its planned medical isotope production facility in Lea County, New Mexico. The project received state financial backing following a construction permit application filed with the Nuclear Regulatory Commission in May. Company officials anticipate commercial operations will begin in 2030 to supply diagnostic and cancer treatment isotopes. /PRNewswire/ -- Eden Radioisotopes today announced significant progress toward development of its planned medical isotope production facility in Lea County,... St...Core Content
Core ContentNuclear NewsNEW WVU Statler College to launch nuclear engineering pathwayWest Virginia University will offer a specialized academic curriculum for students pursuing careers in the atomic energy sector. Starting in 2027, the program introduces coursework covering reactor fundamentals, power plant systems, and medical applications. The structure allows undergraduates in any engineering discipline to acquire targeted technical skills. The academic expansion aligns with recent Department of Energy initiatives establishing Nuclear Lifecycle Innovation Campuses in the state. Regional programs address workforce shortages by connecting students with federal research projec...Core Content
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Nuclear NewsNEW Approval to build Oak Ridge nuclear reactor comes ahead of schedule for TVAThe Nuclear Regulatory Commission is scheduled to approve a construction permit for the Tennessee Valley Authority to build a small modular reactor along the Clinch River in Oak Ridge. The decision marks the first regulatory approval for the GE Vernova Hitachi BWRX-300 design and the second commercial advanced reactor permit issued in the United States. TVA projects commercial operation of the unit could begin in December 2033, pending a subsequent operating license from the NRC. The Tennessee Valley Authority will soon have a landmark permit to build an advanced nuclear reactor along the Clin...Core Content
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Nuclear NewsNEW Commercialization of fusion energy will ‘change everything,’ lawmaker saysA bipartisan group of U.S. lawmakers introduced the American Leadership in Fusion Act this week. The proposed legislation allocates ten billion dollars in federal funding to accelerate the commercialization of fusion energy. Supporters point to recent advancements in artificial intelligence plasma modeling as a key driver for the timeline. The bill directs billions toward new test facilities, fuel cycle challenges, and milestone based demonstration programs. It also codifies the Department of Energy Office of Fusion and establishes a federal workforce development program. Lawmakers intend the...Core Content
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Nuclear NewsNEW Nuclear Plant Restarts Show What Government Can Do With a Clear MandateWorkers at the Palisades nuclear plant began loading fuel assemblies into an empty reactor vessel following a permanent shutdown. This marks the first time a commercial reactor in the United States has attempted a restart after entering decommissioning. Similar federal review processes are now underway for the Crane and Duane Arnold facilities. These projects rely on a standardized federal framework combining Nuclear Regulatory Commission environmental reviews with Department of Energy loan guarantees. The process tests whether shuttered nuclear infrastructure can successfully return to commer...Core Content
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Nuclear NewsNEW General Matter submits licence application for enrichment plantThe developer plans to build a commercial uranium enrichment facility at the former Paducah Gaseous Diffusion Plant site in Kentucky after submitting a license application to the Nuclear Regulatory Commission. The facility will produce low-enriched uranium and eventually High-Assay Low-Enriched Uranium for advanced reactors. This initiative addresses the lack of broad domestic commercial enrichment options in the United States. A licence application has been submitted to the US Nuclear Regulatory Commission by General Matter for its proposed commercial uranium enrichment facility in Paducah, K...Core Content
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Nuclear NewsNEW World’s first isotope refinery project that can transform fusion innovation gets funding boostWorld's first isotope refinery project can transform fusion innovation StandardX secured ten million pounds in seed funding to construct the world's first commercial isotope refinery in London. The facility will utilize a proprietary accelerator system to mass-produce scarce isotopes required for targeted cancer therapies and fusion energy fuel, such as tritium. Initial medical isotope supplies are scheduled for delivery to research partners by 2027. StandardX is building the world's first isotope refinery, which can unlock the scalable supply of the rarest materials on Earth to enable the nex...Core Content
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Outage NewsNEW Cooper begins Fall 2026 refueling outageCooper began a routine refueling outage on September 28, 2026, starting two days later than its scheduled September 26 start date. The 772-megawatt General Electric boiling water reactor entered the refueling window after running about 100 percent of its typical 647-day operating cycle. Operated by Nebraska Public Power District with commercial operation since 1974, the plant maintained a 1379-day unscheduled-outage-free streak going into the event. The unit posted a 99.4 percent capacity factor during its prior cycle in 2025. Across the United States fleet, 94 units operated at a 90.1 percent capacity factor, with nine units in refueling outages. BROWNVILLE, NE. Cooper entered a refueling outage on Sep 28, 2026 . The published schedule had a Sep 26, 2026 start; actual is 2 days later than...Core Content
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Outage NewsNEW Byron 2 begins Fall 2026 refueling outageByron Unit 2 began a scheduled refueling outage on September 28, 2026, starting precisely on its planned date. The 1,136-MW Westinghouse four-loop pressurized water reactor entered the fall maintenance period following a 3637-day unscheduled-outage-free streak. Operated by Constellation Nuclear, the unit had run about 94 percent of its typical 547-day operating cycle and posted a 93.9 percent capacity factor during the 2025 prior cycle. Across the broader U.S. fleet, 94 units operated at a 90.1 percent capacity factor with nine units in refueling. BYRON, IL. Byron 2 entered a refueling outage...Core Content
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Outage NewsNEW Callaway begins Fall 2026 refueling outageCallaway began a scheduled refueling outage on September 26, 2026, starting on its planned date for the fall season. The 1,190-MW Westinghouse four-loop pressurized water reactor entered the maintenance window with a scheduled duration of 45 days. Operated by Union Electric Company in Missouri, the unit entered this refuel following a 301-day unscheduled-outage-free streak. The plant had run about 82 percent of its typical 548-day operating cycle after recording a 66.8 percent capacity factor in 2025. Nationwide, the fleet operated at a 90.1 percent capacity factor across 94 units, with nine u...Core Content
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History & TriviaNEW Fewer Than 10 American Veterans Who Saw Hiroshima and Nagasaki Are Still Alive. Their Stories Are DiFewer than 10 American service members who entered Hiroshima and Nagasaki as occupation troops in 1945 remain alive. These aging veterans are the last direct witnesses to the immediate human and structural devastation caused by the first wartime use of atomic weapons. For decades, government secrecy orders prevented these personnel from discussing their radiation exposure and observations. Preserving their firsthand accounts provides valuable historical documentation regarding the long-term health effects of radiation on military personnel and the realities of nuclear warfare. American occupation troops witnessed Hiroshima and Nagasaki weeks after the atomic bombs. Fewer than 10 are believed to remain alive. Less than 10 American veterans who saw the Japanese cities after 1945 bombings are...Core Content
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GeneralNEW Best Company you have worked for(priviate or govt)RP- what company(s) 1 do what they say(2)pay and per diem paid without hassle (3) have the best pay rates?W/ DZ / RSCS
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History & TriviaThis Hidden City In Tennessee Held One Of The World’s Most Closely-Guarded SecretsOak Ridge, Tennessee transformed rapidly from a rural farming town into a massive, classified site for the Manhattan Project during World War II. Thousands of workers labored in secrecy to produce material for the atomic weapons that ultimately brought an end to the global conflict. The historic site established strict security protocols and massive industrial infrastructure that laid the groundwork for modern nuclear research facilities. Today, the location preserves its wartime heritage while continuing to contribute to advancements in science, technology, and energy research within the nucl...Core Content
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New on the facility map: see who's hiring at a glanceThe facility map got a pretty good overhau...
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We have recently updated the with over 1,500 new aerial and facility images.Some of the late...
The Fall 2026 U.S. nuclear refueling outage schedule has been released. 25 units are scheduled to refuel this season.
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We've launched a new board, Outage News: a running record of refueling and forced outages across ...
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We have updated the "Current Reactor Status" section on our facility information pages ...
🔎 Deep Dive: Everything You Can Track on the Facility Info PagesHey everyone, I've been digging thr...
The Nuclear Grid Capacity & Generation Analysis dashboard provides a centralized interface for monitoring and...
We made a new tool fro you:The Operating Reactor Scram Dashboard is a comprehensive analytical tool designed fo...
I am very excited to announce a major upgrade to the NukeWorker Outage Schedules!We now independently project...
NukeWorker's preliminary schedule for Spring 2027 projects 29 nuclear outages, signaling a high-d...
The Fall 2026 nuclear maintenance season features 25 scheduled outages, with peak workload activity proje...
The Spring 2026 nuclear outage season is underway with 34 scheduled maintenance and refueling outages. View the full schedule at .
We've given the entire quiz section a major facelift to make your study sessions smoother and easier on the eyes.
The NukeWorker Photo Gallery has long been the primary destination for our community to share the history, te...
We've just rolled out a major update to the NukeWorker homepage. While the new "Situation Room&quo...
I split the 'Nuclear Discussions' from the 'Nuclear News' posts on the front page.Enhanced the titl...
I've updated the homepage Job Feed with a few key features designed to make it fairer for employers and easier for ...