?Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
1,334
MW Off
?Percentage of total fleet capacity currently online and generating power.
98.6%
Grid
?Outages scheduled for this season.
25
Fall 2026 Outages
?Units currently at 0% power (likely in an outage or shutdown).
1
Offline
?Units operating between 1-99% power (excluding known startups or coastdowns).
4
Reduce
?Units nearing the end of their fuel cycle, gradually lowering power before an outage.
0
Coasting
?Units increasing power following an outage or scram.
0
Startup
?Units on a qualifying Breaker-to-Breaker run: continuous operation exceeding their cycle-adjusted threshold with no trips to 0% power.
4
B2B
Nuclear NewsNEW MIT researcher proposes a way to detect nuclear weapons in spaceMIT researcher Areg Danagoulian has proposed a satellite-based sensor system designed to detect nuclear weapons in orbit. The system uses neutron detectors to identify radioactive material by measuring spallation reactions. Calculations indicate the sensors could verify the presence of nuclear components with high accuracy during close proximity flybys of suspect satellites. The 1967 Outer Space Treaty prohibits nuclear weapons in space, but current verification methods remain limited. This proposal offers a technical framework for monitoring compliance, addressing concerns regarding anti-satellite capabilities. By providing a method to distinguish between natural radiation and nuclear material, the technology could assist policymakers and national laboratories in developing systems to enf...
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Nuclear NewsNEW At the nation’s only all-digital nuclear reactor, engineers conduct the first exPurdue University is utilizing its PUR-1 research reactor to conduct experiments on digital instrumentation and control systems. As the only U.S. reactor licensed with an all-digital nervous system, the facility serves as a test bed for remote monitoring, autonomous control, and cybersecurity techniques intended for next-generation nuclear power plants. These research efforts aim to lower operational costs and improve safety for small modular reactors and microreactors. By developing digital twins and testing artificial intelligence for real-time performance monitoring, engineers are establish...Core Content
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Nuclear NewsNEW Nuclear-Powered Commercial Ship RevivalA rendering of a 15,000 TEU-class small modular reactor–powered containership unveiled by HD Korea Shipbuilding & Offshore Engineering. Shipbuilders in China, South Korea, and Norway are developing nuclear-powered commercial vessel designs to meet global decarbonization goals. These projects utilize molten salt and thorium reactor technologies, prompting the International Maritime Organization to revise safety codes for nuclear merchant ships. Widespread adoption remains contingent on overcoming high construction costs, complex regulatory frameworks, and the need for specialized training for m...Core Content
Core Content
Nuclear NewsNEW DOE Closes Application Window for Used Nuclear Fuel Recycling Partnership, ShiftAerial view of a large facility campus at the Idaho Site The Department of Energy has concluded the application period for a private-sector partnership to construct and operate a used nuclear fuel recycling facility at the Idaho National Laboratory. Evaluators will now review proposals to convert 3,400 unused fuel elements into high-assay low-enriched uranium. The selected partner will manage the facility lifecycle at the Idaho Nuclear Technology and Engineering Center to support the domestic supply chain for advanced reactors. The U.S. Department of Energy's Office of Environmental Management...Core Content
Core ContentNuclear NewsNEW NEA: “Transformative scenario” is needed to reach COP28 goal by 2050The OECD Nuclear Energy Agency released a report stating that tripling global nuclear capacity by 2050 requires a transformative approach to policy, financing, and industrial execution. Current trends in OECD nations remain insufficient to meet the COP28 goal, as most global construction activity is currently concentrated in non-OECD countries. Achieving this target necessitates extending the operating licenses of existing reactors and shifting from project-based construction to programmatic deployment. For the workforce and supply chain, this transition requires standardized manufacturing and increased private capital investment. These changes are intended to address the current decline in industrial capacity and project delivery capabilities across the OECD. In 2023, more than 20 countries at the World Climate Action Summit of the 28th Conference of the Parties to the U.N. Framework Convention on Climate Change (COP28) set the goal of tripling global nuclear energy capacity by 2050. Now, a new report from the OECD Nuclear Energy Agency describes the daunting challenges involved in...Core Content
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Nuclear NewsNEW Wyoming uranium miner wants to expand aquifer drillingUranium Energy Corp has requested a permit amendment from the Wyoming Department of Environmental Quality to expand aquifer exemptions at its Christensen Ranch in-situ recovery site. The proposed 352-acre addition would allow for increased injection of fluids to dissolve uranium ore in the K sandstone aquifer. State regulators are accepting public comments on the expansion through August 3. State officials are asking for public comment on an 11% expansion to the mine’s existing operating area. A uranium mining company is asking the state’s top environmental regulator to approve expanded operat...Core Content
Core ContentNuclear NewsNEW Missouri eyes nuclear expansion at Callaway as power demand climbsMissouri officials are exploring the expansion of the Callaway nuclear power plant to meet rising electricity demand from manufacturing and data centers. Governor Mike Kehoe established an Advanced Nuclear Energy Task Force to guide state strategy, with leaders targeting the Callaway site for a potential new reactor unit. The industry faces challenges regarding construction costs, supply chain gaps, and the loss of institutional knowledge since the 1980s. While Callaway currently operates one reactor with a net capacity of 1,190 MWe and a license valid through 2044, stakeholders emphasize that federal financial support is necessary to mitigate the risks of building new large-scale nuclear infrastructure. Driving through the winding roads of Callaway County, often visible in the distance is a massive, 553-foot-tall concrete structure emitting what looks like white clouds.“A lot of people think that’s smoke coming out of the top; it is not. That is water vapor,” said Travis Hart, manager of the Callaway nuclear power plant that produces 15% of… The single nuclear reactor near Fulton wa...Core Content
Core ContentNuclear NewsNEW NEPA review changes coming under NRC proposed ruleThe Nuclear Regulatory Commission is proposing revisions to 10 CFR Part 51 to streamline environmental reviews by removing the requirement for draft environmental impact statements and expanding categorical exclusions. These changes aim to focus agency assessments on radiological safety while reducing regulatory timelines for licensing actions. The commission is accepting public comments on the proposal through August 21 and plans to host a public hearing during the comment period. The Nuclear Regulatory Commission is proposing changes to its environmental review regulations under the National Environmental Policy Act (NEPA) that agency officials call the most significant in decades. The proposed rule—published in the Federal Register on Tuesday—streamlines 10 CFR Part 51 and calls for no longer requiring draft environmental impact statements (EIS), adding new categorical exclusions that exempt licensing actions from NEPA review, and reducing the regulatory burden in its environmental reviews, among other things. The NRC will accept public comments on the proposed rulemaking until Au...Core Content
Core ContentNuclear NewsNEW Frontier Nuclear signs deal to remediate uranium waste in ColoradoFrontier Nuclear Partners with DISA Technologies to Remediate Legacy Uranium Mine Waste at the Maybell Uranium Project Frontier Nuclear and Minerals Inc. has contracted DISA Technologies to process legacy uranium mine waste at the Maybell Project in Colorado. The project utilizes DISA’s HPSA technology to simultaneously remediate environmental waste and recover uranium for sale. This initiative aims to address historical mining impacts while increasing domestic uranium supply through the processing of existing waste dumps. Winnipeg, Manitoba--(Newsfile Corp. - July 7, 2026) - Frontier Nuclear...Core Content
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Radiation SafetyNEW I need software, and have software to provide for free!Hello!I happen to be in need of both the WinRM25 and WinE600 Softwares. Do you by chance still have a copy lying around?
NotInIreland
NotInIreland
VogtleNEW RV Sites Available – 1 Mile from Plant Vogtle | Perfect for Outage Crewshttps://vogtlervpark.com/
Rennhack
Rennhack
Outage NewsNEW Fermi 2 trips offline, unscheduled outage underwayFermi 2, Monroe, Michigan. Fermi 2 began a forced short unscheduled outage on 2026-07-04, ending a 44-day unscheduled-outage-free streak. This event marks the second forced outage for the unit in 2026, following zero forced outages during 2025. The 1,141-MW General Electric BWR/4 is currently the only unit in the fleet in an unscheduled outage. MONROE, MI. Fermi 2 dropped offline on Jul 4, 2026 , beginning an unscheduled outage. The NRC has not yet issued an event notification for this trip; a follow-up reply will be posted here if one is filed. This is the second unscheduled outage of 2026 for the unit. Across the U.S. fleet of 94 commercial reactors, today's combined capacity factor is 98.4% (1 unit in an unscheduled outage), above the 97.8% baseline for this month over the past five yea...Core Content
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Outage NewsWatts Bar 2 refuel pulled forward 7 days: now Nov 6The refueling schedule for Watts Bar 2 has been revised to start on 2026-11-06, which is 7 days earlier than the previous start date of 2026-11-13. The scheduled duration for the outage has also been adjusted from 28 days to 29 days. Watts Bar 2 's next refueling outage has been pulled forward by 7 days in the utility's published schedule. The new scheduled start is Nov 6, 2026 , moving from a previous schedule of Nov 13, 2026. Scheduled duration also revised: now 29 days , 1 day longer than the previously scheduled 28. For workers planning to support this outage, the revised window changes th...Core Content
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Outage NewsWaterford 3 refuel pushed back 17 days: now Oct 17The refueling schedule for Waterford 3 has been revised, moving the start date from September 30, 2026, to October 17, 2026. This adjustment represents a 17-day delay for the beginning of the outage. The planned duration for the event has also been modified, decreasing from 40 days to 25 days. Waterford 3 's next refueling outage has been pushed back by 17 days in the utility's published schedule. The new scheduled start is Oct 17, 2026 , moving from a previous schedule of Sep 30, 2026. Scheduled duration also revised: now 25 days , 15 days shorter than the previously scheduled 40. For workers...Core Content
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POET: plant-specific PRA inputs, built from the operating recordA new tool on NukeWorker turns the U.S. fleet's...
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🔎 Deep Dive: Everything You Can Track on the Facility Info PagesHey everyone, I've been digging thr...
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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 ...