Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
18,429
MW Offline
Percentage of total fleet capacity currently online and generating power.
81.4%
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).
15
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: Peach Bottom 2 5%, Point Beach 1 14%, Callaway 15%, Point Beach 2 45%.
4
Starting UpPeach Bottom 2 +3
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, 587 days online without a shutdown.
1
Breaker-to-BreakerCalvert Cliffs 2 587d
Wisconsin’s first commercial nuclear reactor was:
Nuclear NewsNEW NRC workshop addresses “bridge” between DOE authorization and NRC licensingThe Nuclear Regulatory Commission hosted a workshop to discuss how developers can transition reactor designs authorized by the Department of Energy into the commercial licensing process. The session focused on a new rule effective November 25 that establishes a streamlined pathway for these designs. Agency officials emphasized that applicants must account for operational differences between short-term DOE test facilities and commercial plants intended for decades of service.
Core Content
Core Content
Nuclear NewsNEW UW Researchers to Study Repowering State’s Retiring Coal Plants with Nuclear EnergyFederal funding will support a new University of Wyoming study on replacing retiring fossil fuel plants with small modular nuclear reactors. The project evaluates technical feasibility, economic viability, and workforce impacts. Researchers intend to identify suitable regional sites and gauge community support.Core Content
Core Content
Nuclear NewsNEW NSUF awards 18 Super Rapid Turnaround ExperimentsThe Department of Energy awarded 2.7 million dollars in facility access for 18 research projects focused on nuclear fuels and advanced reactor materials. Researchers from eleven institutions will use the National Science User Facilities program to conduct irradiation testing and material examinations over a twelve-month period.Core Content
Core Content
Nuclear NewsNEW Sapphire Pipe Dream Becomes a RealityResearchers at the Pacific Northwest National Laboratory have installed a custom mass spectrometer capable of measuring all uranium and plutonium isotopes simultaneously. The instrument, designated the Sapphire 1700, features twenty-two detectors and cuts sample analysis times nearly in half.Core Content
Core Content
Nuclear NewsNEW DOE UpdateCommunity Reuse Organization Sets Stage for Portsmouth Site Revitalization; Hanford Builds on Drone Program to Improve Facility Inspections; and much more! The Department of Energy transferred more than 350 acres of land at the former Portsmouth gaseous diffusion plant to a local community reuse organization to support future industrial development. Simultaneously, contractors at the Hanford Site deployed aerial drones to conduct routine roof inspections on inactive nuclear facilities.Core Content
Core Content
Nuclear NewsNEW Wyoming signs MOU for expedited permitting under FAST-41Wyoming Governor Mark Gordon and federal officials signed an agreement to apply streamlined project reviews to state developments. The coordination allows federal and state agencies to process permit applications in tandem. All future infrastructure proposals in the state will follow these accelerated timelines.Core Content
Core Content
Nuclear NewsNEW Fentress County Dropped From Nuclear Waste Site List After Unanimous VoteFentress County Off Nuclear Waste Repository List Fentress County officials removed the area from consideration as a potential nuclear waste repository following unanimous opposition from the county commission and local residents. The decision halts local plans for hazardous material storage while preserving the county's ongoing economic development and infrastructure partnerships with the state.Core Content
Core Content
Nuclear NewsNEW Is There Anything Left in the Dream of Cold Fusion?Researchers are examining how historical skepticism toward anomalous nuclear claims has impacted broader physics investigations. Specifically, recent discussions highlight muon-catalyzed fusion and exotic atoms involving heavy particle substitutions.Core Content
Core Content
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
Outage NewsNEW Arkansas Nuclear 2 trips offline, unscheduled outage underwayArkansas Nuclear 2 began an unscheduled outage, with the unit reported at 0% power in the NRC daily report of Nov 4, 2026. This event ends a streak of more than 5 years without an unscheduled outage for the unit. This is the 1 forced outage for Arkansas Nuclear 2 in 2026, compared to 0 in all of 2025.Core Content
Core Content
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
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 NewsRadiation 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
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...