Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
7,192
MW Offline
Percentage of total fleet capacity currently online and generating power.
92.6%
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).
6
Units Offline
Units operating between 1-99% power (excluding known startups or coastdowns).
4
Reduced Power
Units nearing the end of their fuel cycle, gradually lowering power before an outage.
3
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.
10
Breaker-to-Breaker
Nuclear NewsNEW Blue Energy submits first construction application to NRCBlue Energy submitted an initial construction permit application to the Nuclear Regulatory Commission for a planned facility at the Port of Victoria site in Texas. The filing requests approval for early construction work and a sequencing method that builds natural gas infrastructure before integrating small modular reactors. The project ultimately aims to supply electricity to nearby data center operations. Blue Energy has submitted the first part of its construction permit application to the US Nuclear Regulatory Commission for its planned gas-to-nuclear project in Texas. ; The application relates to the first nuclear unit at the Port of Victoria site and includes a request to start "limited construction activities, including deep foundation and shaft works to house the power plant's firs...
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Nuclear NewsNEW EM UpdateLos Alamos Achieving Banner Year for Waste Shipments to Waste Isolation Pilot Plant; Hanford Tank-Side Pretreatment System Resumes Operations After 6-month Pause; and much more! Los Alamos cleanup crews completed eighty-two transuranic waste shipments to the Waste Isolation Pilot Plant this fiscal year, marking a ninety-one percent increase over the previous year. The surge stems from retrieving and downsizing legacy radioactive materials at the New Mexico laboratory. At the Hanford Site, the Tank-Side Cesium Removal System resumed operations following a six-month pause caused by storage capac...Core Content
Core ContentNuclear NewsNEW Nusano releases Launch Pad enrichment project detailsNusano has released operational details for its National Reactor Innovation Center project, which focuses on developing a direct metallization high-assay low-enriched uranium production line. The company plans to use a proprietary single-pass separation technique that avoids fluoridated gas, aiming for a 2031 operational date. This initiative contributes to ongoing Department of Energy efforts to expand domestic HALEU production capacity outside of traditional centrifuge methods. At the end of August, Utah-based company Nusano was chosen as one of the second-round selections by the National Re...Core Content
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Nuclear NewsNEW SRS’s Salt Waste Processing FacilityEngineers at the Savannah River Site utilized artificial intelligence to diagnose a persistent processing bottleneck at the Salt Waste Processing Facility. The analysis revealed that a mechanical weir was slightly undersized, limiting liquid separation rates. By increasing the weir diameter by one-tenth of an inch, operators boosted the processing rate beyond original design specifications to 23 gallons per minute. The use of artificial intelligence enabled operators of the Savannah River Site’s Salt Waste Processing Facility to make a minuscule mechanical adjustment that resulted in substanti...Core Content
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Nuclear NewsNEW Between old fuel and a new frontier: How Argonne’s nuclear energy experts bridge technology gaps forArgonne National Laboratory is partnering with commercial firms and international agencies to advance used nuclear fuel recycling and advanced reactor technologies. The lab is providing testing infrastructure, technical expertise, and experimental data to help developers transition concepts from the laboratory to commercial deployment. Commercializing fuel recycling helps address long-term waste management and resource availability for the nuclear sector. Methods like pyroprocessing reduce the volume and complexity of spent fuel while supplying feedstock for advanced reactor designs, supportin...Core Content
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Nuclear NewsNEW NRC Grants Holtec Exemption to Begin Early Site Construction Activities for Pioneer Units 1 and 2The Nuclear Regulatory Commission approved an exemption allowing Holtec International to begin early site preparation work at the Palisades site. The decision authorizes permanent support-of-excavation and cutoff-wall installations for two new reactors before a formal Limited Work Authorization is issued. The approval lets the company proceed with foundation stabilization, dewatering, and excavation activities for the planned Pioneer units. Workers will perform geological mapping and maintain site inspections while establishing conditions for future nuclear island construction. The project tes...Core Content
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Nuclear NewsNEW Fusion breakthroughs spark optimism but scaling challenges aheadPrivate fusion developers raised a record 4.5 billion dollars globally to fund net energy gain and commercial prototypes. Companies such as Pacific Fusion, Realta Fusion, and Helion Energy recently achieved major engineering milestones in pulsed-power and direct energy conversion. Despite these technological advances, the sector faces severe hurdles in scaling, materials science, and economics before commercial deployment. Experts emphasize that developing neutron-resistant materials, tritium breeding blankets, and cost-effective designs will determine whether fusion can successfully transitio...Core Content
Core ContentNuclear NewsNEW US bets heavy on Westinghouse fleet but cost hurdles loomThe United States Department of Energy announced a $17.5 billion loan program to support the construction of ten Westinghouse AP1000 reactors across five sites. The initiative aims to fund long-lead equipment procurement and accelerate project schedules by up to three years through serial production. Serial manufacturing is intended to reduce per-unit costs and supply chain bottlenecks, supporting federal goals to expand nuclear capacity. However, analysts caution that historical cost overruns at projects like Vogtle present financial risks for utilities and developers participating in the new...Core Content
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Nuclear NewsNEW eVinci sets temperature record during zero-power criticality testsWestinghouse completed testing at the National Criticality Experiments Research Center in partnership with Los Alamos National Laboratory and the Nevada National Security Site. The work generated temperature-dependent data to validate analytical models for the TRISO-fuelled microreactor design. These results support the ongoing development of the transportable, heat pipe-cooled energy system. Westinghouse says the completion of zero-power high-temperature criticality testing for the microreactor, which saw it reach criticality at 663 degrees Celsius, is a defining milestone in the programme's...Core Content
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Outage NewsNEW FitzPatrick begins Fall 2026 refueling outageFitzPatrick began a routine refueling outage on September 14, 2026, aligning exactly with its published schedule. The unit entered this maintenance period after completing 100 percent of its typical 729-day operating cycle and maintaining an unscheduled-outage-free streak of 720 days. The scheduled duration for this refueling outage is 17 days, which is shorter than the unit's 28.3-day average across 13 prior refuels. FitzPatrick, an 853-MW General Electric BWR/4 operated by Constellation Nuclear, recorded a 99.7 percent capacity factor during its 2025 cycle. Across the U.S. fleet, 94 units are currently operating at a 92.4 percent capacity factor, with five units in refueling outages and one in an unscheduled outage. LYCOMING, NY. Refueling activities began at FitzPatrick on Sep 14, 2026...Core Content
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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. Going into this event, the unit maintained an 813-day unscheduled-outage-free streak and had completed roughly 97 percent of its typical 547-day operating cycle. Georgia Power operates five other nuclear units, while the broader U.S. fleet operates at a 92.4 percent capacity factor with six total reactors currently offline. Vogtle 2 recorded a 92 percent capacity f...Core Content
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Outage NewsNEW Browns Ferry 1 begins Fall 2026 refueling outageBrowns Ferry 1 began a routine refueling outage on September 12, 2026, starting one day later than the scheduled September 11 date. The 1,256-MW General Electric BWR/4 entered the break after completing about 98 percent of its typical 726-day operating cycle. Operated by the Tennessee Valley Authority, the unit entered the refueling outage following an unscheduled-outage-free streak of 142 days and a 2025 capacity factor of 97.8 percent. The historical average for this unit is 32.7 days across nine prior refuels. Across the broader U.S. fleet, capacity factor stands at 92.4 percent for 94 unit...Core Content
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GeneralNEW Shift Test Engineer Career PathsI am doing my Shift Test Engineer initial qualification at a public shipyard. I'm going to complete my STE qualification but I have some doubts as to whether I am going to stay at this shipyard long-term. If after completing my initial qualification, I decide to go to a different shipyard, will I take my STE qualification with me and only have to cross-qualify to my new yard' platform(s) or will I be starting from scratch initial qualifying again?If I decide to go the commercial route, what are good departments for former STEs besides operations?
roggy22
roggy22Nuclear SoftwareLooking 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 :)achathaway
achathaway
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...Core Content
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