Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
4,394
MW Offline
Percentage of total fleet capacity currently online and generating power.
95.5%
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).
3
Units Offline
Units operating between 1-99% power (excluding known startups or coastdowns).
1
Reduced Power
Units nearing the end of their fuel cycle, gradually lowering power before an outage.
6
Coastdown
Units increasing power following an outage or scram.
0
Starting Up
Units on a qualifying Breaker-to-Breaker run: continuous operation exceeding their cycle-adjusted threshold with no trips to 0% power.
12
Breaker-to-Breaker
Nuclear NewsNEW Deep Fission completes borehole demonstrationDeep Fission lowered and retrieved a full-sized, non-nuclear reactor canister inside a test borehole using standard commercial drilling equipment. The test validated the core deployment sequence for the company's proposed underground small modular reactor concept. Utilizing existing industrial hardware reduces the need for specialized nuclear equipment development during future deployment phases. A full-sized prototype of the canister that will hold the Gravity reactor has been installed and then retrieved from a borehole using standard equipment already in commercial service in the drilling industry. ; California-based Deep Fission is developing the Gravity reactor, a small modular reactor designed to be placed underground in an optimised borehole one mile (1.6 km) deep. The company has a...
Nuclear NewsNEW SRS resumes shipments of remote-handled transuranic waste to WIPPThe Savannah River Site completed its first shipment of remote-handled transuranic waste to the Waste Isolation Pilot Plant in more than ten years. The resumed operations utilize newly developed, lead-lined steel containers designed to safely transport high-radiation legacy materials. Facility operators are currently preparing approximately 150 additional waste drums for transport to the New Mexico repository. A new type of heavy-duty shielded container is being used to ship remote-handled legacy transuranic waste from the Savannah River Site in Aiken, S.C., to the Waste Isolation Pilot Plant...
Nuclear NewsNEW NASA solicits lunar radioisotope powerNASA has issued a request for proposals to develop high-efficiency radioisotope Stirling generators for lunar exploration missions. The initiative focuses on creating lightweight power systems capable of providing up to 150 watts of direct current in permanently shadowed regions where solar power is ineffective. This development expands the nuclear industry's role in aerospace applications and deep-space power infrastructure. NASA has announced it is seeking proposals for five technological areas, including radioisotope power systems (RPSs), to support exploration missions with a near-term foc...
Nuclear NewsNEW West Virginia joins the ranks of NLIC finalistsGovernor Patrick Morrissey announced that federal officials added his state to the Department of Energy Nuclear Lifecycle Innovation Campuses program. West Virginia signed a memorandum of understanding, becoming the sixth finalist competing to host the upcoming nuclear facilities. The Department of Energy initiative focuses heavily on the back end of the nuclear fuel cycle, including used fuel storage, recycling, and final waste disposition. Program officials emphasize that gaining public trust and establishing social license for waste management remains a primary objective for hosting communi...
Nuclear NewsNEW U.S. Army Corps of Engineers completes decommissioning and dismantlement of historic SM-1 nuclear poThe U.S. Army Corps of Engineers Baltimore District has finished all field activities for the decommissioning and dismantlement of the former SM-1 nuclear power plant at Fort Belvoir, Virginia. Workers removed radioactive materials, dismantled the structure, and restored the site footprint to a graded landscape following a project that began with planning in 2014. The SM-1 reactor began operations in 1957 as the Army's first nuclear plant and supplied power to the commercial grid before its deactivation in 1973. The successful completion of this project provides the military and the broader nu...
Nuclear NewsNEW NIST-Developed Quantum Sensors Improve Nuclear MonitoringResearchers at the National Institute of Standards and Technology have measured X-ray emissions from uranium, plutonium, and neptunium with high precision. Using superconducting transition edge sensors, the team reduced measurement uncertainty by up to eight times. This advancement helps filter out background noise that traditionally masks critical gamma-ray signatures in nuclear materials. Accurate characterization of nuclear material is essential for international safeguards, facility accounting, and determining enrichment levels for fuel or weapons. By subtracting obscuring radiation, these...
Nuclear NewsNEW Limerick’s digital leap: Sustainability through modernizationConstellation plans to upgrade the control rooms at the two nuclear units at Limerick with digital instrumentation and control systems. The project will replace legacy analog hardware with touchscreen and mouse interfaces. Unit 2 will undergo implementation in spring 2027, followed by Unit 1. The upgrade marks the first safety-related digital control overhaul of this scale in the United States nuclear fleet. The facility operates two boiling water reactors with a combined net capacity of about 2,242 megawatts. The modernization aims to resolve analog parts obsolescence and transition operators...
Nuclear NewsNEW NRC finds radiation safety lapses during Palisades restart workFederal regulators issued two violations to the Palisades nuclear plant after workers encountered high airborne radioactivity levels without proper warnings or evacuations. Inspectors found that plant staff failed to follow procedures and evaluate potential internal radiation doses from alpha dust between December and March. The 767-megawatt facility is currently offline as operators pursue an unprecedented commercial restart following its prior shutdown and decommissioning entry. Plant management has since implemented corrective actions, including enhanced radiological controls and updated pr...
Nuclear NewsNEW ONE Nuclear Advances 1 GW SMR Project within its Louisiana Development PlatformONE Nuclear Energy has moved its planned Project Amberjack into technical and environmental reviews. The developer secured a site in Louisiana for the multi-unit small modular reactor campus. The proposed facility targets up to one gigawatt of electricity generation capacity using vendor-neutral technology. The next development phase involves comprehensive land, geotechnical, and environmental field studies alongside transmission evaluations. Project progression aligns with state energy strategies prioritizing advanced reactor deployment and industrial growth. The site work prepares the compan...
Outage NewsNEW Dresden 2 trips offline, unscheduled outage underwayDresden 2 entered a forced short outage on 2026-09-04, ending a streak of 1226 days without an unscheduled outage. This event marks the first forced outage for the 902-MW General Electric BWR/3 unit during the 2026 calendar year. The unit, which has been in commercial operation since 1970, recorded zero forced outages throughout 2025. Constellation Nuclear operates this unit alongside 20 other U.S. nuclear units. Across the current fleet of 94 units, the industry reports a 98.3 percent capacity factor with one unit currently in an unscheduled outage and zero units in refueling. MORRIS, IL. Dresden 2 entered an unscheduled outage on Sep 4, 2026 . The NRC has not yet issued an event notification for this trip; a follow-up reply will be posted here if one is filed. This is the first unschedul...
Outage NewsNEW Davis-Besse trips offline, unscheduled outage underwayDavis-Besse began an unscheduled forced short outage on 2026-09-08. This event ended the unit's unscheduled-outage-free streak at 386 days. This is the first forced outage for the 894-MW Babcock and Wilcox PWR in 2026, matching the total count for all of 2025. Energy Harbor Nuclear Generation operates this unit along with three other U.S. nuclear units. Across the industry, 94 units are currently operating at a 95.4 percent capacity factor. Two units are currently in refueling outages, while Davis-Besse and Dresden 2 are the only two units in unscheduled outages at this time. OAK HARBOR, OH. A...
Outage NewsNEW North Anna 2 begins Fall 2026 refueling outageNorth Anna 2 began its scheduled refueling outage on September 6, 2026, two days earlier than the original plan. The unit entered this maintenance period after completing 95 percent of its typical 548-day operating cycle and maintaining an unscheduled-outage-free streak of 987 days. The unit is a 944-MW Westinghouse 3-loop PWR operated by Virginia Electric and Power, which manages three other nuclear units in the United States. This refueling follows a prior cycle that achieved a 90 percent capacity factor. The outage duration is scheduled for 36 days, compared to the 43-day average recorded a...
Nuclear SoftwareNEW Looking for Rados softwareUpdate: I found out that Mirion bought Rados. I called Mirion and they informed me that they have discontinued the model and software. I haven't had any luck by reaching out to third parties.You're my only hope Obi-Wan :)
History & TriviaThe Hiroshima Atomic Blast Forged a Metal Never Seen Before on EarthGeologists led by the University of Florence have identified a previously unknown iron-chromium alloy within microscopic fallout debris from the 1945 Hiroshima atomic bombing. The 10-micrometer grain exhibits a complex, highly ordered cubic crystal structure that formed due to the extreme temperatures and rapid cooling rates of the nuclear fireball. This discovery highlights that nuclear blast debris contains a unique library of metastable materials that are difficult to replicate in laboratory settings. For the nuclear industry, these findings demonstrate that fallout particles serve as a phy...
DC CookNewly Renovated Furnished 2Br rental near D.C. CookD.C. Cook outage housing available in Stevensville for September/October.We have furnished 2BR / 1.5BA units available for outage workers, with full kitchen, in-unit washer/dryer, Wi-Fi, utilities, and parking included. Each unit has 1 king bed and 2 queen beds and works well for 1–2 workers or coworkers sharing a unit.Weekly and 4–6 week stays available. We also have two neighboring units, so we may be able to accommodate a small crew that wants to stay close together while still having separate living space.Located in Stevensville with convenient access to D.C. Cook.Message me for availabili...









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