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Total megawatts of U.S. nuclear capacity offline right now (units in outages plus reduced power).
10,774
MW Offline
Percentage of total fleet capacity currently online and generating power.
88.9%
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).
10
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.
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.
9
Breaker-to-Breaker
Outage NewsNEW Cooper begins Fall 2026 refueling outageCooper began a routine refueling outage on September 28, 2026, starting two days later than its scheduled September 26 start date. The 772-megawatt General Electric boiling water reactor entered the refueling window after running about 100 percent of its typical 647-day operating cycle. Operated by Nebraska Public Power District with commercial operation since 1974, the plant maintained a 1379-day unscheduled-outage-free streak going into the event. The unit posted a 99.4 percent capacity factor during its prior cycle in 2025. Across the United States fleet, 94 units operated at a 90.1 percent capacity factor, with nine units in refueling outages. BROWNVILLE, NE. Cooper entered a refueling outage on Sep 28, 2026 . The published schedule had a Sep 26, 2026 start; actual is 2 days later than...
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Outage NewsNEW Byron 2 begins Fall 2026 refueling outageByron Unit 2 began a scheduled refueling outage on September 28, 2026, starting precisely on its planned date. The 1,136-MW Westinghouse four-loop pressurized water reactor entered the fall maintenance period following a 3637-day unscheduled-outage-free streak. Operated by Constellation Nuclear, the unit had run about 94 percent of its typical 547-day operating cycle and posted a 93.9 percent capacity factor during the 2025 prior cycle. Across the broader U.S. fleet, 94 units operated at a 90.1 percent capacity factor with nine units in refueling. BYRON, IL. Byron 2 entered a refueling outage...Core Content
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Outage NewsNEW Callaway begins Fall 2026 refueling outageCallaway began a scheduled refueling outage on September 26, 2026, starting on its planned date for the fall season. The 1,190-MW Westinghouse four-loop pressurized water reactor entered the maintenance window with a scheduled duration of 45 days. Operated by Union Electric Company in Missouri, the unit entered this refuel following a 301-day unscheduled-outage-free streak. The plant had run about 82 percent of its typical 548-day operating cycle after recording a 66.8 percent capacity factor in 2025. Nationwide, the fleet operated at a 90.1 percent capacity factor across 94 units, with nine u...Core Content
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History & TriviaNEW Fewer Than 10 American Veterans Who Saw Hiroshima and Nagasaki Are Still Alive. Their Stories Are DiFewer than 10 American service members who entered Hiroshima and Nagasaki as occupation troops in 1945 remain alive. These aging veterans are the last direct witnesses to the immediate human and structural devastation caused by the first wartime use of atomic weapons. For decades, government secrecy orders prevented these personnel from discussing their radiation exposure and observations. Preserving their firsthand accounts provides valuable historical documentation regarding the long-term health effects of radiation on military personnel and the realities of nuclear warfare. American occupation troops witnessed Hiroshima and Nagasaki weeks after the atomic bombs. Fewer than 10 are believed to remain alive. Less than 10 American veterans who saw the Japanese cities after 1945 bombings are...Core Content
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GeneralNEW Best Company you have worked for(priviate or govt)RP- what company(s) 1 do what they say(2)pay and per diem paid without hassle (3) have the best pay rates?W/ DZ / RSCS
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Hoghead
History & TriviaThis Hidden City In Tennessee Held One Of The World’s Most Closely-Guarded SecretsOak Ridge, Tennessee transformed rapidly from a rural farming town into a massive, classified site for the Manhattan Project during World War II. Thousands of workers labored in secrecy to produce material for the atomic weapons that ultimately brought an end to the global conflict. The historic site established strict security protocols and massive industrial infrastructure that laid the groundwork for modern nuclear research facilities. Today, the location preserves its wartime heritage while continuing to contribute to advancements in science, technology, and energy research within the nucl...Core Content
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Nuclear NewsNEW World’s first isotope refinery project that can transform fusion innovation gets funding boostWorld's first isotope refinery project can transform fusion innovation StandardX secured ten million pounds in seed funding to construct the world's first commercial isotope refinery in London. The facility will utilize a proprietary accelerator system to mass-produce scarce isotopes required for targeted cancer therapies and fusion energy fuel, such as tritium. Initial medical isotope supplies are scheduled for delivery to research partners by 2027. StandardX is building the world's first isotope refinery, which can unlock the scalable supply of the rarest materials on Earth to enable the next era of medicine and fusion energy. A London-based company is building the world’s first isotope refinery, which can enable the next era of medicine and fusion energy. For this, StandardX has raised...Core Content
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Nuclear NewsNEW Energy firms advance US nuclear reactor technology for heavy industry operationsViaro Energy and Terrestrial Energy are collaborating to evaluate site requirements and commercial deployment for Integral Molten Salt Reactors. The partnership aims to supply zero-carbon electricity and high-temperature heat to heavy industrial facilities and data centers. This initiative reflects a broader industry trend where energy-intensive sectors partner directly with nuclear developers to secure reliable, non-fossil power. Viaro Energy and Terrestrial Energy are advancing plans to deploy Integral Molten Salt Reactors to power heavy industry. An alliance between US-based reactor develop...Core Content
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Nuclear NewsNEW U.S. nuclear agency OKs Diablo Canyon safety report. What to knowThe Nuclear Regulatory Commission accepted a Pacific Gas and Electric materials report indicating that Diablo Canyon Unit 1 is not subject to premature embrittlement. The evaluation follows recent testing of a surveillance capsule removed from the reactor vessel. While federal regulators approved a 20-year license extension, continued operation past 2030 still requires approval from the state legislature. The report was published after the NRC granted a 20-year license for the power plant. A recent test conducted by PG&E and its contractor shows that materials in Unit 1 at the Diablo Canyon nu...Core Content
Core ContentNuclear NewsNEW Incident pauses Palisades fuel loading; plant connected to switchyardOperator Holtec paused fuel loading at the Palisades nuclear plant after a previously used fuel assembly tilted inside the reactor vessel. Engineers are developing retrieval equipment and preparing a license amendment for the Nuclear Regulatory Commission while independent restart activities continue. Concurrently, workers reconnected the facility to the local 345-kilovolt switchyard in preparation for eventual grid synchronization. An incident involving a fuel assembly has paused the fuel loading process at the Palisades power plant in Covert, Mich., operator Holtec has acknowledged. Fuel loa...Core Content
Core ContentNuclear NewsNEW NANO Nuclear, IP3 and Cybernetic Intelligence Sign Letter of Intent to Pursue Nuclear-Powered AI InfNANO Nuclear Energy, IP3 Corporation, and Cybernetic Intelligence have signed a letter of intent to collaborate on nuclear-powered artificial intelligence and national security infrastructure projects. The agreement names NANO Nuclear as the preferred technology and services provider for advanced microreactors, fuel supply, and reactor operations across domestic and international markets. The partnership combines NANO Nuclear's reactor designs with IP3's project development capabilities and Cybernetic Intelligence's computing expertise to serve energy-intensive data centers and defense install...Core Content
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Nuclear NewsNEW Can the SpaceX playbook work for nuclear power?Startup General Matter, co-founded by a former SpaceX executive, secured federal funding to establish a uranium enrichment facility in Paducah, Kentucky. The company aims to supply commercial fuel for both conventional and advanced nuclear reactors amid growing domestic demand. The United States currently relies on foreign suppliers for low-enriched uranium and faces an upcoming ban on Russian imports. Advanced reactor designs also require high-assay low-enriched uranium, creating a severe domestic supply deficit that new enrichment ventures attempt to resolve. General Matter, a startup helmed...Core Content
Core ContentNuclear NewsNEW Dems want Hochul to drop $23.9 billion nuclear subsidy planLegislative-Letter-on-New-Nuclear-Subsidies.pdf State lawmakers and advocacy groups are raising concerns over proposed financial subsidies for new nuclear generation, citing potential rate increases for utility customers. Critics point to cost overruns at recent nuclear projects in other states to warn against public funding and construction guarantees. Opponents argue that state funds should instead support alternative energy sources like wind and solar. planned 3, at a cost of $36.8 billion, more than double the original cost estimate of $14 billion 4.The exorbitant cost of this new nuclear...Core Content
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Nuclear NewsNEW SRS is crucial to the nation's nuclear future, Governor's Nuclear Advisory Council toldThe Savannah River Site maintains the nation's sole operational, production-scale chemical separation facility capable of handling high levels of radioactivity. State advisory officials reviewed the site's ongoing missions in nuclear materials processing and defense programs. This specialized infrastructure underpins federal radioactive waste management and isotope production efforts. The Savannah River Site contains the only production-scale, radioactivity-shielded chemical separation facility in the nation. Carl Dawson covers the City of Aiken and the Savannah River Site. An Aiken County res...Core Content
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Nuclear NewsNEW Constellation Energy Generation, LLC; Christopher M. Crane Clean Energy Center; Environmental AssessThe Nuclear Regulatory Commission and Department of Energy released an environmental assessment and a finding of no adverse environmental impact. The federal agencies evaluated plans to resume power operations at the Christopher M. Crane Clean Energy Center in Pennsylvania. This review supports potential commercial restarts of retired nuclear generation units. Constellation Energy Generation requested license amendments and exemptions to restore the single pressurized water reactor, formerly known as Three Mile Island Unit 1. The facility aims to supply 835 megawatts of baseload electricity to...Core Content
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