Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
18,175
MW Offline
Percentage of total fleet capacity currently online and generating power.
81.2%
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: Vogtle 2 2%, D.C. Cook 1 47%.
2
Starting UpVogtle 2 +1
Units on a qualifying Breaker-to-Breaker run: continuous operation exceeding their cycle-adjusted threshold with no trips to 0% power. Longest trip-free streak: Braidwood 2, 13.3 years since its last unplanned outage.
2
Breaker-to-BreakerBraidwood 2 13.3y
What is NukeWorker.com founder Michael Rennhack by trade?
Nuclear NewsNEW Could nuclear power return to Vernon?State officials are considering the Vermont Yankee site in Vernon as a potential location for a small modular reactor. Vermont Public Service Commissioner Kerrick Johnson told local leaders that new nuclear technology could help address rising electricity demand and climate goals, though any project remains at least seven years away.
Core Content
Core Content
Nuclear NewsNEW Collaboration secures radioisotope supply to support US medical scansOak Ridge National Laboratory and the Missouri University Research Reactor established a domestic supply chain for gadolinium-153. The radioisotope is used to calibrate single-photon emission computed tomography scanners for medical diagnostics.Core Content
Core Content
Nuclear NewsNEW NRC finalizes rule on licensing reactors with prior DOE or DOD authorizationThe Nuclear Regulatory Commission has approved a new framework allowing developers to use prior Department of Energy or Department of Defense data for commercial reactor applications. The regulation establishes target review timelines of 18 months for initial designs and 12 months for subsequent units.Core Content
Core Content
Nuclear NewsNEW Lloyd’s Register and British Ports Association Call for Early Nuclear Readiness Planning at PortsLloyd's Register and the British Ports Association released a joint report urging maritime facilities to begin early planning for advanced nuclear technologies. The guidance establishes a tiered readiness pathway covering nuclear-powered ships, floating power units, and land-based small modular reactors.Core Content
Core Content
Nuclear NewsNEW Hands Off the Glovebox: An Electrochemical System for Semiautonomous Decontamination at Los AlamosResearchers at Los Alamos National Laboratory developed a semiautonomous platform called the Glovebox Decontamination System. The technology uses a closed-loop flow of a continuously regenerated cerium-based oxidant to remove radiological contamination from stainless steel surfaces without manual wiping.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
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 of World War II, the United States and Germany engaged in a nuclear arms race. Adolf Hitler with Nazi war generals, studying maps at Hitler's headquarters. The discovery of nuclear fission in late 1938...Core Content
Core Content
Site NewsNEW New: RCT Part 2 Practice Test, NRRPT & CHP Additions, & More Free TriviaWe are very excited to announce that the NukeWorker Quiz now includes the DOE RCT Core Part 2: Site Academics , all 19 modules: completes the DOE RCT Core. Part 1, Part 2 and a Comprehensive Examination over both Part 1 & 2 are all in the quiz now, 48 practice tests drawing from 1,819 questions. New: RCT Core Site Academics (DOE Part 2) 19 module quizzes: RCT Core 2.01 Radiological Documentation through 2.19 Counting Room Equipment. Dosimetry, contamination control, respiratory protection, source control, work coverage, shipments, incidents, decon, first aid and the instrument modules are all...
Rennhack
Rennhack
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...Rennhack
Rennhack
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 ContentOutage 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
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...