Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
18,775
MW Offline
Percentage of total fleet capacity currently online and generating power.
81%
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).
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: Sequoyah 2 6%.
1
Starting UpSequoyah 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: Calvert Cliffs 2, 585 days online without a shutdown.
1
Breaker-to-BreakerCalvert Cliffs 2 585d
Duane Arnold Energy Center was named after:
Nuclear NewsNEW Campbell County residents weigh a second nuclear fuel facilityCanadian firm Nucleon Energy is proposing a $575 million facility near Gillette, Wyoming, to convert uranium into uranium hexafluoride. Local residents gathered at a recent public information session to question company representatives about safety protocols, emergency response plans, and economic impacts.
Core Content
Core Content
Nuclear NewsNEW Saltfoss targets US licensing for floating power plantSaltfoss has initiated pre-application discussions with the US Nuclear Regulatory Commission for its seaMSR-100 floating reactor design. The company plans to submit a regulatory engagement plan in early 2027 under the NRC new Part 53 framework. Reactor payloads will be constructed in the United States, while hulls and barges are manufactured in South Korea.Core Content
Core Content
Nuclear NewsNEW Enterprise Hulk Towed from Newport News ShipbuildingBig E departs Newport News, bound for Alabama | Watch The retired nuclear-powered aircraft carrier USS Enterprise departed Newport News Shipbuilding under tow on Monday. The vessel is traveling to Mobile, Alabama, where commercial contractors will complete the dismantling process. This marks the final phase for the world's first nuclear-powered aircraft carrier after decades of naval service.Core Content
Core Content
Nuclear NewsNEW ORNL to lead three INFUSE projects advancing fusion technologyThe Department of Energy's Oak Ridge National Laboratory will lead three public-private research initiatives focusing on fusion technology development. The projects address material durability, device diagnostics, and high-temperature superconductor manufacturing under the Innovation Network for Fusion Energy program.Core Content
Core Content
Nuclear NewsNEW 77 MW nuclear reactors secure critical vessel component for high-pressure coolantUS nuclear reactor maker orders key coolant system for 77 MW modules NuScale Power has contracted South Korean manufacturer Doosan Enerbility to produce the upper reactor coolant systems for its small modular reactor design. This agreement advances supply chain readiness for NuScale as it prepares to deploy its commercial nuclear plants.Core Content
Core Content
Nuclear NewsNEW Centrus Begins Shipping Centrifuges to Ohio to Support Major Expansion of Uranium Enrichment CapacitCentrus Energy has completed and shipped the first newly manufactured uranium enrichment centrifuge from its facility in Oak Ridge, Tennessee. The hardware is bound for the company site in Piketon, Ohio. This delivery represents the initial tangible output of a domestic manufacturing restart intended to scale up domestic fuel production.Core Content
Core Content
Nuclear NewsNEW Centrus sends first new centrifuge built at Oak Ridge to Piketon plantCentrus Energy has shipped its first domestically manufactured gas centrifuge from Tennessee to its uranium enrichment facility in Piketon, Ohio. The machine is part of a broader expansion aimed at producing domestic, unobligated low-enriched uranium and high-assay low-enriched uranium for commercial reactors and national security needs. The company plans to install thousands of additional units to support full production by 2029.Core Content
Core Content
Nuclear NewsNEW UW-Madison breaks ground on new radioisotope cyclotron facilityThe University of Wisconsin-Madison has begun construction on a $62 million facility housing two new medical cyclotrons. The project expands the institution's radioisotope production capacity by up to eightfold and introduces advanced alpha-particle production capabilities. The infrastructure will supply materials for cancer theranostics, support clinical trials, and provide hands-on training for health care and technical personnel.Core Content
Core ContentNuclear NewsNEW Amato, Rumpf & Myhre Propose Micro-Modular Reactor Bills to Fight Rising New Jersey Utility CostsAmato, Rumpf & Myhre Propose Micro-Modular Reactor Bills to Fight Rising New Jersey Utility Costs State legislators filed a package of bills to redirect regional greenhouse gas funds toward the deployment of micro-modular reactors. The measures seek to address climbing consumer electricity prices by establishing financial incentives for new nuclear energy projects that can generate localized power.Core Content
Core Content
Money MattersNEW Health Insurance for Outage FolksHow does health insurance work for the traveling outage folks? Is this a "you're on your own" type of deal?
vanmo96
vanmo96
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
Outage NewsNEW Sequoyah 2 begins Fall 2026 refueling outageTennessee Valley Authority began a routine refueling outage at Sequoyah Unit 2 on October 3, 2026. The fall refueling started one day later than its scheduled October 2 start date with a planned duration of 29 days.Core Content
Core Content
Outage NewsNEW Cooper trips offline, unscheduled outage underwayCooper entered an unscheduled outage and was reported at 0% power in the NRC daily report of Nov 2, 2026. This marks the 1 forced outage for the unit so far in 2026, compared to 0 in all of 2025, closely following a 34-day refueling outage that ended Oct 31, 2026. The NukeWorker forced-outage duration projection is about 4 days.Core Content
Core Content
Outage NewsNEW Vogtle 2 trips offline, unscheduled outage underwayVogtle 2 entered an unscheduled outage and was reported at 0% power in the NRC daily report of Nov 3, 2026. The NukeWorker forced-outage duration projection is about 3 days. This marks 1 forced outage for the unit so far in 2026, compared to 0 in all of 2025.Core Content
Core ContentOutage 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.Core Content
Core Content
Outage NewsNEW Oconee 1 begins Fall 2026 refueling outageOconee 1 began a routine refueling outage on Oct 31, 2026, starting 3 days earlier than its scheduled start of Nov 3, 2026. The unit entered this refuel following an end-of-cycle coastdown lasting 14 days, during which output drifted from 97% to 87%. Going into this refuel, the plant had gone more than 7 years without an unscheduled outage and had run about 100% of its typical 627-day operating cycle.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...