Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
16,316
MW Offline
Percentage of total fleet capacity currently online and generating power.
83.2%
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).
16
Units Offline
Units operating between 1-99% power (excluding known startups or coastdowns).
3
Reduced Power
Units nearing the end of their fuel cycle, gradually lowering power before an outage.
0
Coastdown
Units increasing power following an outage or scram. Now: Byron 2 94%.
1
Starting UpByron 2
Units on a qualifying Breaker-to-Breaker run: continuous operation exceeding their cycle-adjusted threshold with no trips to 0% power. Longest current run: Oconee 1, 713 days online without a shutdown.
2
Breaker-to-BreakerOconee 1 713d
Catawba Nuclear Station takes its name from:
Nuclear NewsNEW EM UpdateEM Leadership Surveys Portsmouth Cleanup Progress, Paving Way for Reindustrialization and Energy Future; Hanford’s Tank Side Treatment System Sets New Record, and much more! Department of Energy officials recently toured the Portsmouth Site to review demolition progress while Hanford workers processed a record volume of radioactive waste through their cesium removal system. Meanwhile, Los Alamos representatives updated local stakeholders on increased waste shipments to the Waste Isolation Pilot Plant.
Core Content
Core Content
Nuclear NewsNEW How an $85M federal award would help CFS, fusion energy, and U.S. chip industryThe Department of Commerce and Commonwealth Fusion Systems signed a letter of intent for an $85 million federal award under the CHIPS and Science Act. The funding will support microelectronics projects, including power supplies and controllers, to benefit both domestic semiconductor manufacturing and fusion reactor development. This initiative aims to strengthen the supply chain for commercial fusion power plants such as SPARC.Core Content
Core Content
Nuclear NewsNEW ELEMENTL POWER, DS INVESTMENT PARTNERS AND SAMSUNG C&T TO ADVANCE NEW U.S. NUCLEAR DEVELOPMENTELEMENTL POWER, DS INVESTMENT PARTNERS AND SAMSUNG C&T TO ADVANCE NEW U.S. NUCLEAR DEVELOPMENT Elementl Power signed a preliminary agreement with DS Investment Partners and Samsung C&T to create a funding platform. The proposed partnership provides up to $750 million for advanced nuclear projects in the United States. This funding targets pre-construction activities such as permitting and long-lead item procurement.Core Content
Core Content
Nuclear NewsNEW SpaceNukes receives DARPA award to ground test kilopower reactorSpaceNukes will partner with Los Alamos National Laboratory to develop an autonomous kilopower reactor under a new agreement with the Defense Advanced Research Projects Agency. The project advances technology from the 2018 KRUSTY prototype by incorporating active control rods and automated systems for remote operational environments.Core Content
Core Content
Nuclear NewsNEW Faster, more accurate airborne radiation detectionResearchers from the University of Michigan and the Paul Scherrer Institute developed a physics-based Bayesian framework for airborne radiation detection. During six-second helicopter flyovers, the method accurately identified single and mixed radioactive sources. It pinpointed locations within two meters and estimated activities within two percentage points.Core Content
Core Content
Nuclear NewsNEW Small reactor developers tie in EPC partners to de-risk roll outSmall modular reactor developers are forming partnerships with major engineering, procurement, and construction firms to prepare for commercial deployments in the 2030s. Companies including Kairos Power, TerraPower, and X-energy have secured agreements with experienced builders to manage construction and mitigate project risks.Core Content
Core Content_23740_47890.jpg)
Nuclear NewsNEW Regulatory milestone for US laser enrichment plantThe US Nuclear Regulatory Commission issued its Final Environmental Impact Statement recommending a construction and operation license for the proposed Paducah Laser Enrichment Facility in Kentucky. Global Laser Enrichment plans to use SILEX laser technology to re-enrich depleted uranium tails from past operations. A final safety evaluation report is expected by the end of the year.Core Content
Core Content
Site NewsNEW Radiation Instrument Index, 193 Meters with Specs & ManualsThe Radiation Instrument Index just grew: replies did this. The page now has 193 instruments, up from 129, and 128 of them have the manual on file, up from 66. You Asked, It's There RDS-32 and the Tele-STTC-2: the RDS-32 and its wide range telescoping probe are on the page, with Mirion's specs and the RDS-32 user manual. ISOCS and HPGe: search HPGe or specific activity and ISOCS comes up, along with the BEGe and GEM germanium detectors. 64 New Instruments Friskers and probes: Ludlum 177, 2401-P, 2224-1, 44-10, 44-3, 43-1, 44-7 and the 239-1F floor monitor, Eberline E-140, E-600 and ESP-1, Canb...
Rennhack
Rennhack
History & TriviaNEW How Close Were the Nazis to a Nuclear Bomb?During World War II, Nazi Germany and the United States pursued rival nuclear weapons programs. While the American Manhattan Project succeeded, the German project failed to build a functioning nuclear reactor or weapon due to severe resource shortages and technical hurdles. Historical analysis and recent scientific studies show that the German team lacked sufficient uranium and pure heavy water to sustain a chain reaction. This historical divergence highlights how industrial scale, material purity, and centralized resources dictate the success of nuclear development efforts. Behind the lines o...Core Content
Core Content
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.Core Content
Core Content
Outage NewsNEW Vogtle 2 begins Fall 2026 refueling outageGeorgia Power began a routine refueling outage at Vogtle 2 on September 13, 2026. The 1,152-MW Westinghouse pressurized water reactor entered the maintenance window exactly on its scheduled start date with a planned 43-day duration.Core Content
Core Content
Outage NewsNEW D.C. Cook 1 begins Fall 2026 refueling outageIndiana Michigan Power began a routine refueling outage at D.C. Cook 1 on 2026-09-19. The 1,009-MW Westinghouse 4-loop PWR started the maintenance period on the planned date with a scheduled duration of 32 days.Core Content
Core Content
We are very excited to announce that the NukeWorker Quiz now includes the DOE RCT Core Part 2: Site Academics, all 19 modules: That completes the DOE RCT Core. Part 1, Part 2 and a Comprehensive Examination over both Part 1 & 2 are all in the ...
The Radiation Instrument Index is live: 129 radiation protection instruments on one page, from the RO-2 and the NP-2 Snoopy to the current PCMs, CAMs and EPDs. Find the meter your site runs, see what the DOE RCT exam calls it, and open the manual....
Missed a question on one of our practice tests? Now the answer sheet tells you exactly where to go study it.When you finish a NukeWorker practice test, the answer sheet shows each question, the answer you picked, and the correct answer. Now most q...
Our long-range outage projections just got sharperNukeWorker's gives you two things: validated dates for the coming season, and our own long-range projections for the seasons beyond, 18 to 24 months out, before the utilities publish their dat...
Every Outage Finally Has a NameIf you have worked an outage, you know it has a name. Nobody at the tool crib says "the spring outage at Catawba." They say . It is on the badge, on the schedule, on the coffee cup somebody had printed.For ...
New on the facility map: see who's hiring at a glanceThe facility map got a pretty good overhaul. A few things on there now that I think you'll actually use:Jobs are on the map now. Top-right of the map there's an Open Jobs button. Hit...
Did You Know NukeWorker Has Online Practice Exams? (Now With Certificates)Here is something a lot of folks in the field do not realize: NukeWorker has a full library of online practice exams for radiation protection and radiological control worker...
The NukeWorker Reactor Status MapIf you have ever wanted to know which plants are running, which are down for an outage, and which one just tripped offline, all on a single screen, that is exactly what the NukeWorker Reactor Status Map on our home...
We have recently updated the with over 1,500 new aerial and facility images.Some of the latest additions include high-quality views of:Research & Academic Facilities: Rhode Island Atomic Energy Commission, MIT Nuclear Research Reactor (MITR),...
The Fall 2026 U.S. nuclear refueling outage schedule has been released. 25 units are scheduled to refuel this season.
POET: plant-specific PRA inputs, built from the operating recordA new tool on NukeWorker turns the U.S. fleet's day-by-day operating history into initiating-event frequencies and data-analysis parameters, with the Bayesian work shown. If you k...
We've launched a new board, Outage News: a running record of refueling and forced outages across the entire U.S. nuclear fleet.The community has always been good at sharing what's happening on the ground. Outage News sits alongside that as...
New Feature: RadNet Radiation Map Now OnlineWe're excited to announce a major addition to the Facility Information suite: the .It brings EPA's environmental radiation data together with our nuclear facility database, giving a national view...
We have updated the "Current Reactor Status" section on our facility information pages to provide a much more detailed and intuitive look at plant performance and operational history.You can see the new layout and logic in action on thes...
🔎 Deep Dive: Everything You Can Track on the Facility Info PagesHey everyone, I've been digging through the updated Facility Information sections here on Nukeworker. Whether you're a road warrior planning your next outage or an engineer tr...
The Nuclear Grid Capacity & Generation Analysis dashboard provides a centralized interface for monitoring and analyzing the performance of the U.S. nuclear fleet. This tool utilizes both real-time metrics and long-term historical trends.
Below ...
We made a new tool fro you:The Operating Reactor Scram Dashboard is a comprehensive analytical tool designed for monitoring and analyzing U.S. commercial nuclear power plant trip events. It centralizes raw data from the Nuclear Regulatory Commissi...
I am very excited to announce a major upgrade to the NukeWorker Outage Schedules!We now independently project expected outage extensions beyond officially published schedules using our new 'Amber Bar' forecasting. We aren't just follow...
NukeWorker's preliminary schedule for Spring 2027 projects 29 nuclear outages, signaling a high-demand season for specialized contractors and traveling craft. Activity is concentrated in the Northeast and Southeast regions from March to early ...
The Fall 2026 nuclear maintenance season features 25 scheduled outages, with peak workload activity projected for late September through October. Contractors are advised to monitor schedules closely, as dates are subject to change based on grid de...
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, technical marvels, and daily life of the nuclear industry. Today, we're excited to announce a major update to the gallery's design, ...
We've just rolled out a major update to the NukeWorker homepage. While the new "Situation Room" layout looks great, the real power lies in the deep industry intelligence these tools now provide at a single glance.Master the Outage Season...
I split the 'Nuclear Discussions' from the 'Nuclear News' posts on the front page.Enhanced the titles (narrower font) so they display 10 more characters of the titles on the page.On hover, it shows the full title.And a new easy to ...
I've updated the homepage Job Feed with a few key features designed to make it fairer for employers and easier for job seekers to spot the latest opportunities.1. No More "Front Page Flooding" I've implemented a 3-job cap per employer. T...