Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
18,486
MW Offline
Percentage of total fleet capacity currently online and generating power.
80.9%
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).
17
Units Offline
Units operating between 1-99% power (excluding known startups or coastdowns).
2
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: D.C. Cook 1 12%.
1
Starting UpD.C. Cook 1
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, 708 days online without a shutdown.
2
Breaker-to-BreakerOconee 1 708d
Beaver Valley has how many units?
Site NewsNEW Radiation Instrument Index, 129 Meters with Specs & ManualsThe Radiation Instrument Index is live: 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. What Every Entry Gives You The exam's name for it: every meter is mapped to the generic type the DOE RCT exam asks about. Ion chamber, GM pancake probe, ZnS alpha probe, gas flow proportional PCM, moderated BF3 or He-3 rem meter. What is on your shelf lines up with what is on the test. Manufacturer specs: detector, window, what it detects, and range. For PCMs, CAMs and counting room gear, the performance numbers. All pulled from the manufacturer's manual or datasheet. The manual: 66 instruments have the manual on file, one click to open. Every entry...
Rennhack
Rennhack
Site NewsNEW New in the Practice Tests: Study Help for the Questions You MissMissed 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 questions also have a Study Help box. It points you to the book, chapter and objective that cover that question.For example, if you miss an alpha monitoring question on the NUF practice exam, Study Help sends you to NUF Cram Notes, Chapter 8, Objective 8.2 . Open the book, go straight to that objective, and you’re studying the exact material the questi...Rennhack
Rennhack
History & TriviaThe 1946 Law That Put America’s Atomic Bombs Under Civilian ControlThe 1946 Law That Put Atomic Bombs Under Civilian Control | HISTORY The U.S. faced an unprecedented question after World War II: Should civilians or the military oversee its nuclear ars... All the major chapters in the American story, from Indigenous beginnings to the present day. History from countries and communities across the globe, including the world’s major wars. From prehistory, though antiquity and into the 21st century, all of history’s biggest chapters. Read the full article at HISTORY :
Core Content
Core Content
Nuclear NewsNEW Space Nuclear Power Corporation Awarded DARPA Agreement for Ground Test of Autonomous Nuclear ReactoSpace Nuclear Power Corporation received a Defense Advanced Research Projects Agency agreement to conduct a ground test for an autonomous reactor control system. The project builds upon the 2018 Kilopower Reactor Using Stirling Technology demonstration and aims to advance reliable fission power options for future space and national security missions.Core Content
Core ContentNuclear NewsNEW NANO Nuclear Energy and IMPSA Sign Master Services Agreement to Advance Engineering and Fabrication NANO Nuclear Energy signed a three-year engineering services master agreement with heavy manufacturer IMPSA to support the KRONOS micro modular reactor project. The collaboration begins with a feasibility study to review reactor pressure vessels and heavy components against ASME code requirements.Core Content
Core Content
Nuclear NewsNEW Holtec’s Engineering and Manufacturing Prowess Delivers Breakthrough Fuel Assembly Recovery at PalisHoltec International successfully recovered a tilted fuel assembly at the Palisades nuclear plant using a custom-engineered Fuel Movement Device. The company designed and manufactured the equipment in two weeks following NRC approval of a license amendment request. This recovery allows the facility to continue preparations for its planned return to service.Core Content
Core Content
Nuclear NewsNEW Gillette Targeted For Massive $575 Million Uranium Processing PlantNucleon Fuel is proposing a $575 million uranium conversion facility in Gillette, Wyoming. The subsidiary of Nucleon Energy applied for state funding to build a plant that processes uranium concentrate into uranium hexafluoride for enrichment.Core Content
Core Content
Nuclear NewsNEW Campbell County Moves $500 Million Nuclear Fuel Facility Closer To RealityCampbell County commissioners approved a one-year access agreement allowing BWXT Advanced Fuels to conduct environmental and engineering studies at the Pronghorn Industrial Park. The decision clears the way for preliminary site characterization as the company evaluates the location for a planned nuclear fuel manufacturing facility.Core Content
Core Content
Nuclear NewsNEW Second round of Genesis Mission selections includes 12 Phase II awardsThe Department of Energy selected 18 new projects under its Genesis Mission, including 12 Phase II awards designed to scale up research through multi-year funding. The latest round focuses on artificial intelligence applications for extreme radiation environments, facility operations, fusion energy development, and nuclear waste processing.Core Content
Core Content
Nuclear NewsNEW Startup plans to rejuvenate the nuclear power industry with a new manufacturing approachMIT spinout Blue Energy plans to manufacture massive nuclear reactor modules inside commercial shipyards. The firm intends to shorten construction timelines and lower financial risks by initially operating hybrid energy facilities on natural gas before transitioning to nuclear power generation.Core Content
Core Content
Nuclear NewsNEW The challenge of securing uranium from seawaterSupercritical Materials secured an exclusive Department of Energy license for a patented seawater uranium extraction technology developed by Pacific Northwest National Laboratory. The company aims to scale the process to yield commercial quantities of yellowcake by 2033.Core Content
Core Content
Nuclear NewsNEW Oak Ridge National Lab researchers working to put nuclear reactor on the moonOak Ridge National Laboratory is partnering with NASA to develop a fission reactor designed to power a lunar habitat by 2030. Researchers view the lunar project as a stepping stone for testing long-term off-world power systems before attempting crewed missions to Mars.Core Content
Core Content
Outage NewsNEW D.C. Cook 1 completes Fall refuel in 33 days, caps 507-day B2B runD.C. Cook 1 completed a routine refueling outage lasting 33 days, running 1 day longer than the planned 32 days. The outage period spanned from Sep 19, 2026 to Oct 21, 2026 at 0% power. As of the NRC report of Oct 22, 2026, the unit restarted and was at 12% power while still ramping up.Core Content
Core Content
Outage NewsNEW Waterford 3 begins Fall 2026 refueling outageWaterford 3 began its routine refueling outage on Oct 17, 2026, right on its scheduled start date with a planned duration of 25 days. The unit entered this fall outage following a streak of about 23 months without an unscheduled outage, having run about 89% of its typical 561-day operating cycle. Its 18 prior refuels averaged 49.9 days.Core Content
Core Content
Outage NewsNEW Susquehanna 1 trips offline, unscheduled outage underwaySusquehanna 1 began a forced short unscheduled outage on September 29, 2026. The event ended the 1,247-MW General Electric BWR/4 unit's unscheduled outage-free streak at 317 days.Core Content
Core Content
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...