Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
6,947
MW Offline
Percentage of total fleet capacity currently online and generating power.
92.8%
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).
1
Reduced Power
Units nearing the end of their fuel cycle, gradually lowering power before an outage.
4
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 RFK Jr. takes step toward electromagnetic radiation rulesThe Department of Health and Human Services is seeking public feedback on the health effects of electromagnetic fields and radiofrequency radiation. HHS Secretary Robert F. Kennedy Jr. announced the initiative to identify research gaps and update federal policy guidance regarding wireless technology exposure. The project could create regulatory friction with the Federal Communications Commission, which maintains that current exposure limits remain safe and scientifically sound. Health and Human Services Secretary Robert F. Kennedy Jr. took the first step toward implementing regulations or health warnings for cellphones, wifi, and other technologies based on fringe concerns that electromagnetic radiation could cause health problems. Kennedy and his department are asking for public feedback...
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Nuclear NewsNEW Massachusetts blocks Holtec from discharging Pilgrim waterThe Massachusetts Department of Environmental Protection dismissed Holtec International's appeal to discharge up to 1.1 million gallons of treated wastewater from the shuttered Pilgrim nuclear site into Cape Cod Bay. State regulators upheld their previous denial under the Ocean Sanctuaries Act, creating potential delays for the ongoing decommissioning project. Holtec is currently reviewing remaining options, which may include further legal appeals or transporting the water out of state. In 2024, the Massachusetts Department of Environmental Protection (MassDEP) denied Holtec International’s ap...Core Content
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Nuclear NewsNEW SOAR event connects Knott County residents with nuclear energy jobsThe Shaping Our Appalachian Region organization hosted an employment event in Knott County to connect local trade workers with positions in the nuclear sector. Representatives noted that companies frequently recruit from the area due to the reliability and experience of former coal miners and construction personnel. These roles often require traveling to various domestic and international nuclear facilities. Eastern Kentuckians with a strong background in trades such as coal mining and construction met with career-readiness professionals Thursday afternoon to explore positions in nuclear energ...Core Content
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Nuclear NewsNEW Deep Fission Publishes DOE-Approved Nuclear Safety Design Agreement for Gravity™ Pilot Reactor, DemoDeep Fission releases safety design agreement for Kansas nuclear pilot project Deep Fission has published its Nuclear Safety Design Agreement for the underground Gravity reactor pilot project planned in Parsons, Kansas. The Department of Energy approved the safety framework in July as part of its Reactor Pilot Program, though the current status does not authorize facility operation. Local advocacy groups have raised transparency and waste storage concerns regarding the unconventional deep borehole design. TOPEKA — The company building a nuclear reactor one mile underground in Parsons made its...Core Content
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Nuclear NewsNEW ISU ‘powering Idaho’s energy future’ with second nuclear reactorIdaho State University announced plans to install a second nuclear reactor on its campus through a partnership with NuCube Energy and the Department of Energy. The planned Advanced Research and Test reactor will generate three to four megawatts of thermal power, providing hands-on training for students and research opportunities for the nuclear workforce. POCATELLO – Local and state leaders gathered on Idaho State University’s campus to announce an upcoming project that will result in the university having a second nuclear reactor on campus. On Wednesday morning, these leaders spoke to a crowd...Core Content
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Nuclear NewsNEW Radiation monitoring: ORNL builds sensors to detect nuclear material in fuel facilitiesORNL develops new sensor to detect nuclear material in fuel facilities Researchers at Oak Ridge National Laboratory created a compact radiation detector designed to monitor uranium dust buildup inside facility ventilation ducts. The device straps directly onto ductwork to provide continuous real-time data using inexpensive plastic scintillating crystals. This automated system replaces manual inspections, helping facilities lower monitoring costs while improving worker safety and material security. ORNL has developed a compact radiation detector for continuous, real-time monitoring of nuclear m...Core Content
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Nuclear NewsNEW Nuclear fuel recycling could cut US waste storage from 100,000 years to hundreds300GW US nuclear push taps recycling to cut 100,000-year waste storage Argonne National Laboratory is developing fuel recycling technologies, including pyroprocessing, to support the United States goal of adding 300 gigawatts of nuclear capacity by 2050. These methods aim to reduce the demand for newly mined uranium and shorten radioactive waste storage requirements from hundreds of thousands of years to hundreds. Collaborations with private companies are moving these processes closer to commercial use. Fuel recycling could help support a 300 GW US nuclear expansion while reducing waste and de...Core Content
Core ContentNuclear NewsNEW We’ve crossed the nuclear tipping pointAntares Nuclear achieved zero-power fueled criticality for a privately funded advanced reactor design. This milestone coincides with broad alignment among commercial power demand, federal regulatory reforms, and private capital. Multiple advanced reactor concepts plan to reach criticality over the coming months. Surging electricity needs from data centers, industrial operations, and defense facilities are driving the renewed push for round-the-clock generation. Federal initiatives are concurrently addressing domestic uranium supply and waste management while deploying artificial intelligence t...Core Content
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Nuclear NewsNEW Cameco in offtake agreement for US laser enrichment plantCameco Corporation will purchase the entire future output of the planned Paducah Laser Enrichment Facility in Kentucky under an exclusive contract with Global Laser Enrichment. Global Laser Enrichment anticipates securing a Nuclear Regulatory Commission license for the facility by early 2027. The plant intends to re-enrich historical depleted uranium tails to supply commercial nuclear fuel markets. Canadian company Cameco Corporation is to buy all of the future production of GLE's planned Paducah Laser Enrichment Facility in Kentucky under a newly announced exclusive offtake agreement. ; Silex...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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