Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
7,310
MW Offline
Percentage of total fleet capacity currently online and generating power.
92.5%
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).
6
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.
2
Coastdown
Units increasing power following an outage or scram.
3
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 Uranium mining ban enacted for New Mexico landsJust go dig up other completed UMTRA burial tomb like Crescent Junction (Moab, UT's disposal cell for uranium ore). Easy pickings and the feds don't care.
Nuclear NewsNEW Terrestrial Energy submits molten salt reactor report to NRCTerrestrial Energy delivered a technical report to the Nuclear Regulatory Commission regarding graphite usage within its Integral Molten Salt Reactor design. The submittal initiates a formal regulatory review process to qualify the core component for commercial operation. This marks the second of three planned topical reports required before the company submits a full plant license application. Terrestrial Energy has submitted a report to the U.S. Nuclear Regulatory Commission detailing its proposed use of graphite in a molten salt reactor designed to generate electricity or provide high-tem.....
Nuclear NewsNEW New courses are in the works at University of Utah amid state’s push for nuclear energyThe University of Utah academic senate approved revisions to its nuclear engineering minor to include seven new courses focused on power plants, fuel cycles, and thermodynamics. Scheduled for a fall 2027 launch, the expanded curriculum aims to support regional workforce demands and state energy expansion initiatives. The University of Utah is working on expanding its nuclear engineering curriculum to meet elected officials' energy ambitions. For University of Utah students, a nuclear engineering track had to do more with healthcare technology and less with the nuclear reactors that Utah electe...
Nuclear NewsNEW Antares Selected for $161M Strategic Breakthrough Award to Demonstrate Space ReactorAntares received a $161 million award from the Air Force to develop and demonstrate space nuclear power systems, including a ground demonstration of the R1-S reactor and flight certification integration. The project aligns with national directives to launch space reactors by 2028. This contract expands military microreactor development following the company's recent initial criticality milestone at Idaho National Laboratory. TORRANCE, Calif., September 11, 2026--Antares today announced it has been selected by the Office of the Assistant Secretary of the Air Force for Space Acquisition and Inte...
Nuclear NewsNEW Reactor licensing, decommissioning, operational oversight regulations addressed in latest NRC rulemaThe Nuclear Regulatory Commission released a proposed rule to overhaul regulations governing reactor licensing, decommissioning, and operational oversight. The 339-page proposal aims to introduce risk-informed approaches and flexibility for both existing and new plants. The agency projects the changes will generate up to $411 million in cost savings over 30 years. The Nuclear Regulatory Commission unveiled its latest proposed rule Friday, one that would overhaul broad swathes of its regulations on nuclear reactor licensing, decommissioning, and operational oversight. It also would impact both...
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...
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...
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...
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?
Nuclear 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 :)
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...









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