Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
714
MW Offline
Percentage of total fleet capacity currently online and generating power.
99.3%
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).
0
Units Offline
Units operating between 1-99% power (excluding known startups or coastdowns).
0
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.
1
Starting Up
Units on a qualifying Breaker-to-Breaker run: continuous operation exceeding their cycle-adjusted threshold with no trips to 0% power.
13
Breaker-to-Breaker
Nuclear SoftwareNEW Looking for Rados softwareHey y'all! I'm in the HPT class at the College of East Idaho, and my lab teacher has a Rados ADR-1 sentinel(term check?) that he wants to use, but can't because he doesn't have software for it. Can anyone help with getting software for the class? Also, the plug appears to be an old RGB plug. Can I just get an RGB-usb adapter to make that work?Thanks! -Andy
achathaway
achathaway
History & TriviaNEW The 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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Core ContentDC CookNEW Newly 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 availability, photos, and outage-worker rates.goosewalrusstays@gmail.comTim973-997-8024timsuarez_Mi1
timsuarez_Mi1
Nuclear NewsNEW ORNL explores hybrid approach to manufacturing HIP cansOak Ridge National Laboratory and A.J. Tuck Company developed a hybrid manufacturing process for hot isostatic pressing cans using 3D-printed polymer forms and electroformed nickel shells. This method creates complex, leak-free components while reducing material waste and production time. The technology aims to streamline the fabrication of large reactor parts, such as pressure vessels and valves, by improving precision and simplifying the assembly of metal powder containers. Oak Ridge National Laboratory scientists have collaborated with A.J. Tuck Company to develop a new manufacturing approa...Core Content
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Nuclear NewsNEW Oklo claims PJM improperly dropped its Virginia projectOklo has filed an emergency request with the Federal Energy Regulatory Commission to reinstate a Virginia-based generation project into the PJM Interconnection queue. The company claims PJM improperly withdrew the application, which includes 150 MW of advanced nuclear, 300 MW of fuel cells, and 300 MW of natural gas generation. This dispute highlights the challenges developers face when navigating grid interconnection processes with complex, multi-technology energy projects. As the nuclear industry seeks to deploy advanced reactors, the ability to secure and maintain queue positions remains a...Core Content
Core ContentNuclear NewsNEW Why Innovative Economic Models Can Rewrite Nuclear Energy’s PlaybookA bit long and dry. Why Innovative Economic Models Can Rewrite Nuclear Energy’s Playbook
Marlin
Marlin
Nuclear NewsNEW Noodling on Nuclear Engines What began as a napkin sketch might open up interplanetary explorationWhat began as a napkin sketch might open up interplanetary exploration Read the full article at IEEE Spectrum :Core Content
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Nuclear NewsNEW Scientists make potential breakthrough in search for dark matterThe LUX-ZEPLIN experiment at the Sanford Underground Research Facility recorded a high-energy nuclear recoil event that researchers cannot attribute to known detector backgrounds. The interaction occurred in June 2023 and registered at 248 kiloelectronvolts. Scientists report a global statistical significance of 2.6 sigma, which remains below the threshold required for a discovery. This event is notable because it appeared in a high-energy region where background interference is minimal. While the finding does not confirm dark matter, it suggests potential interactions involving heavy particle...Core Content
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Nuclear NewsNEW Three-in-one cybersecurity shield protects military nuclear reactors from complex risksOSC Global and InfraShield have launched Janus Cyber, a joint initiative providing cybersecurity services for advanced reactors at U.S. military sites. The team integrates nuclear regulatory compliance, military authorization requirements, and industrial control system protections into a single engineering framework. This approach aims to streamline security planning throughout the reactor development cycle. The initiative addresses the challenge of aligning disparate security standards during the design phase to avoid costly retrofits. By embedding cybersecurity into the engineering process e...Core Content
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Nuclear NewsNEW The Nuclear Renaissance Needs Certified Hands. They Are in Short SupplyThe nuclear industry faces a shortage of certified tradespeople necessary to meet construction demands for new reactor projects. Maintaining strict quality assurance standards, as required by NRC regulations, remains a primary challenge. A lack of qualified labor contributed to significant delays and cost overruns during the construction of Plant Vogtle. Nuclear projects require workers who can meet precise documentation and inspection standards, such as those defined by ASME Section IX. Because the pool of skilled labor is shrinking, the industry must invest in long-term training pipelines an...Core Content
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Nuclear NewsNEW Nuclear’s Next Chapter Has a Knowledge ChallengeThe nuclear industry is facing a significant workforce transition as experienced personnel retire while new projects and reactor technologies emerge. Industry leaders are emphasizing that maintaining safe operations requires the preservation of institutional knowledge beyond simple personnel replacement. This effort focuses on documenting the rationale behind critical safety and procurement decisions. Quality assurance frameworks, specifically 10 CFR 50 Appendix B and ASME NQA-1, serve as the primary mechanisms for capturing this knowledge. By maintaining rigorous documentation, traceability,...Core Content
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Outage NewsNEW Browns Ferry 2 trips offline, unscheduled outage underwayBrowns Ferry 2 began an unscheduled forced short outage on August 27, 2026. This event ended a 448 day streak of operation without an unscheduled outage for the 1,259-MW General Electric BWR/4 unit. The unit has recorded one forced outage so far in 2026, compared to two forced outages during the entirety of 2025. Tennessee Valley Authority operates this unit along with six other U.S. nuclear units. Across the industry, 94 units are currently operating at a 97.6 percent capacity factor, with two units currently in unscheduled outages and zero units in refueling. ATHENS, AL. Browns Ferry 2 dropped offline on Aug 27, 2026 , beginning an unscheduled outage. 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 u...Core Content
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Outage NewsNEW Monticello trips offline, unscheduled outage underwayMonticello entered an unscheduled forced short outage on August 10, 2026, ending a 130-day streak of outage-free operation. This event marks the second forced outage for the 617-MW General Electric BWR/3 unit during the 2026 calendar year. The unit, which has been in commercial operation since 1971, recorded four forced outages throughout 2025. Northern States Power Co - Minnesota operates this facility along with two other U.S. nuclear units. Across the industry today, 94 units are maintaining a 97.9 percent capacity factor, with this unit currently representing the only facility in an unsche...Core Content
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Outage NewsSaint Lucie 1 trips offline, unscheduled outage underwaySaint Lucie 1 began an unscheduled forced short outage on August 14, 2026. This event ended a streak of 635 days without an unscheduled outage at the 981-MW Combustion Engineering pressurized water reactor. This forced outage is the first for the unit in 2026, following a year in 2025 with zero forced outages. Florida Power and Light operates this unit along with three other nuclear units in the United States. Across the industry, 94 units are currently operating at a 97.8 percent capacity factor, with Saint Lucie 1 and Monticello as the only two units in unscheduled outages. The next planned...Core Content
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