US grants license for new nuclear reactor before 2027?
Yes refers to: Grants license
Short Answer
Both the model and the market expect the US to grant a license for a new nuclear reactor before 2027, with no compelling evidence of mispricing.
1. Executive Verdict
- NRC completed FSERs and issued construction permits for Kairos Power Hermes 1.
- Significant NRC staffing deficits could delay advanced reactor licensing efforts.
- No active litigation or admitted petitions from anti-nuclear groups reported.
- TerraPower's Natrium construction permit review finished January 2026.
- Fermi America submitted COL applications, targeting an 18-month approval timeline.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| Grants license | 24.0% | 26.5% | The US government is increasingly prioritizing clean energy and energy security goals. |
Current Context
Significant progress is being made in advanced nuclear licensing and infrastructure development. While no U.S. license for a new nuclear reactor's commercial operation has been granted in the last seven days, the U.S. Nuclear Regulatory Commission (NRC) approved its first licenses in over 50 years for new nuclear fuel facilities on February 17, 2026 [^]. These include the first-ever factory for TRISO fuel, which is essential for many next-generation reactors, with TRISO-X, a subsidiary of X-energy, receiving licenses for two facilities in Tennessee [^]. NRC Chair Ho Nieh stated this is "key to enabling the deployment of advanced reactor designs" and supports accelerating nuclear technologies [^]. Additionally, on February 15, 2026, the Pentagon and Department of Energy (DOE) for the first time airlifted a 5-megawatt microreactor (without nuclear fuel) from California to Utah, demonstrating the U.S.'s rapid deployment capability [^]. Energy Secretary Chris Wright highlighted this as a breakthrough for fast-tracking commercial licensing for microreactors, with the developing company hoping for commercial operation by 2028 [^]. In other news, Southern Nuclear Operating Company submitted a license amendment request on February 21, 2026, for Vogtle Unit 3 to delay a previous amendment related to the Reactor Coolant System Cold Leg Temperature, with public comments due by March 25, 2026, and hearing requests by April 24, 2026 [^]. NRC Chairman David Wright stated in January 2026 that the NRC aims to "modernise our regulatory approach to safely reach licensing decisions faster" [^].
Future deployments hinge on new regulatory frameworks and overcoming current challenges. Discussions are centered on existing Part 50 and Part 52 licensing processes, as well as the development of Part 53, a new technology-inclusive, risk-informed framework specifically for advanced reactors, with its final rule anticipated by the end of 2027 [^]. Construction permit decisions for leading advanced reactor companies like TerraPower, X-Energy, and Kairos are expected in late 2026 or 2027, although the first new advanced reactor electricity is optimistically projected to be on the grid by 2032 [^]. The focus is on small modular reactors (SMRs) and advanced reactors, which often use non-water coolants; examples include the recently demonstrated 5-megawatt microreactor and NuScale Power's US460 SMR design, which received NRC approval in 2025 [^]. A critical enabler is the fuel supply chain, including TRISO fuel development and the supply of high-assay low-enriched uranium (HALEU); Urenco USA plans to complete an expansion of its enrichment facility by early 2027 [^]. The DOE is providing significant financial incentives, including $2.7 billion in January 2026 to strengthen domestic enrichment and $800 million in December 2025 for U.S. small modular reactors [^]. Experts like Dr. Todd Allen and Christopher Barnard note that the NRC's traditional regulatory process, designed for older reactor types, poses challenges for advanced designs, advocating for risk-informed, modern safety standards [^]. Reports from the Idaho National Laboratory recommend statutory reforms to clarify administrative authority and streamline inter-agency processes [^]. The DOME microreactor test bed at Idaho National Laboratory is expected to be ready to receive its first experimental reactor in Fall 2026, with testing likely starting in 2027.
Public and industry concerns include safety, waste, costs, and regulatory speed. Common questions address the safety of next-generation reactors, including their ability to prevent overloads or meltdowns, with the NRC emphasizing that all U.S. nuclear plants must meet stringent safety requirements and new designs leverage natural processes [^]. Radioactive waste management remains a significant concern, as the U.S. currently lacks a permanent high-level nuclear waste disposal facility, and debates exist on whether SMRs will produce more or less waste than traditional reactors [^]. High financing and construction costs are acknowledged challenges that could potentially affect consumer prices [^]. Persistent questions arise regarding the time it takes to license and build new reactors, despite legislative efforts to streamline processes [^]. Beyond waste, environmental impact concerns include the energy consumption and carbon footprint associated with uranium mining, fuel processing, and reactor construction [^]. The complexity and perceived slowness of the existing nuclear licensing framework are frequently debated, leading to calls for more efficient, technology-inclusive approaches for advanced reactors [^].
2. Market Behavior & Price Dynamics
Historical Price (Probability)
Outcome probability
Date
This prediction market has demonstrated a clear and sustained bearish trend since its inception. The price has declined from an initial probability of 37.0% to its current level of 27.0%, indicating that market participants have grown progressively more skeptical over time that a new reactor license will be granted before 2027. The price has established a historical support level at $0.16 and a resistance ceiling around $0.43. The current price is trading significantly below its starting point, reinforcing the dominant pessimistic sentiment. The total traded volume of over 135,000 contracts suggests a liquid and active market, adding weight to the validity of the current price as a reflection of collective belief.
The recent positive news regarding the NRC's approval of advanced nuclear fuel facilities on February 17, 2026, does not appear to have triggered a significant bullish reversal. While this development is a critical step for the broader nuclear industry, the market's subdued reaction suggests traders are distinguishing between enabling infrastructure like fuel production and the more complex, time-consuming process of licensing a new commercial reactor. The lack of a major price spike indicates the market likely views this progress as necessary but insufficient to meet the tight pre-2027 deadline. The continued low price of 27.0% suggests the market has largely priced in these preparatory steps and remains focused on the significant regulatory hurdles that still exist for a new reactor itself.
3. Market Data
Contract Snapshot
The provided page content, "US grants license for new nuclear reactor 2026? Odds & Predictions", does not contain the detailed contract rules for this Kalshi market. Therefore, specific triggers for YES or NO resolution, key dates or deadlines, and any special settlement conditions cannot be determined from the given text.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Implied probability |
|---|---|---|---|
| Grants license | $0.24 | $0.77 | 24% |
Market Discussion
While a license for a new commercial nuclear reactor operation has not been explicitly granted "before 2027," the US Nuclear Regulatory Commission (NRC) did approve the first licenses for new advanced nuclear fuel facilities in over 50 years in February 2026, a significant step toward deploying next-generation reactors [^]. Discussions and debates largely center on the renewed momentum for nuclear power, driven by the increasing energy demands of AI data centers and federal initiatives to streamline development, alongside persistent concerns about regulatory hurdles and realistic timelines for deployment [^]. Main viewpoints include optimism regarding federal actions, such as Department of Energy programs to fast-track advanced test reactors by mid-2026 and substantial investments aimed at expanding nuclear capacity and domestic fuel supply [^]. Conversely, skepticism persists due to the traditionally slow and complex US licensing process, with experts noting that while construction permit decisions for advanced reactors might occur in late 2026 or 2027, actual operation of new reactors is not expected until around 2032 [^]. Social media discussions reflect a generally positive sentiment toward nuclear energy for its clean energy potential, yet also highlight ongoing public concerns about waste, safety, and cost [^].
4. Will Kairos Power's Hermes 1 Receive an Operating License Before 2027?
| Hermes 1 Construction Permit Issued | December 14, 2023 [^] |
|---|---|
| Hermes 1 OL Application Submission Target | During 2026 [^] |
| Hermes 1 Construction Completion Target | December 2026 [^] |
The U.S. Nuclear Regulatory Commission (NRC) has already completed FSERs for Kairos Power's Hermes reactors. The NRC issued construction permits following the completion of Final Safety Evaluation Reports (FSERs) for both Kairos Power's Hermes 1 on December 14, 2023 [^] and Hermes 2 on November 21, 2024 [^]. These reviews were completed ahead of schedule, demonstrating an efficient regulatory process. The next significant regulatory step for both projects involves the submission and review of their Operating License (OL) applications. Hermes 2 is targeting construction completion by December 2027 [^] and is not expected to receive an OL before that year, making Hermes 1 the sole candidate for a pre-2027 license.
Kairos Power aims for Hermes 1 operating license by late 2026. The company plans to submit the Operating License application for Hermes 1 during 2026 [^], with targets for commissioning in mid-2026 and operations in 2027 [^]. Achieving an Operating License before December 31, 2026, is considered an ambitious but plausible scenario. This projection is supported by the NRC's demonstrated efficiency in previous Hermes reviews, the staff's existing familiarity with the KP-FHR technology, and Kairos Power's consistent submission of high-quality applications. Further project momentum comes from $629 million in ARDP funding and the securing of HALEU fuel supply in January 2026 [^], highlighting the project's priority.
Operating License review presents significant inherent regulatory complexities. An Operating License review is inherently more complex than a construction permit review, necessitating extensive NRC inspections of the as-built facility and a detailed evaluation of operational programs. A review period of less than 12 months for a first-of-a-kind advanced reactor Operating License would be unprecedented. The current timeline is extremely aggressive, and any unforeseen technical issues or construction delays could potentially push the OL issuance into early 2027. The successful outcome ultimately hinges on a complete and timely OL application submitted in early 2026, coupled with flawless construction quality and continued high prioritization by the NRC.
5. Will NRC Staffing Shortfalls Delay Advanced Reactor Licenses by 2027?
| FY2026 Allocated NRC Staff | 162 FTEs [^] |
|---|---|
| FY2026 Projected Required Staff | 235-250 FTEs [^] |
| Projected Staffing Deficit | 73-88 FTEs [^] |
The U.S. Nuclear Regulatory Commission (NRC) faces a significant staffing deficit for advanced reactor licensing. The NRC's Office of Nuclear Reactor Regulation (NRR) is projected to have 162 Full-Time Equivalent (FTE) staff allocated for advanced reactors in Fiscal Year (FY) 2026 [^]. However, internal workload models indicate a need for 235-250 FTEs by the end of FY2026 to adequately manage anticipated applications, particularly those under the Department of Energy's Advanced Reactor Demonstration Program (ARDP) [^]. This creates a projected shortfall of 73-88 FTEs, representing over a 30% deficit compared to the required staffing levels [^].
Budget requests for future years still project staffing shortfalls. The NRC's FY2027 budget request seeks to increase advanced reactor staffing to 185 FTEs, but this remains considerably below the internally projected need of over 235 FTEs [^]. This persistent gap, attributed to fiscal constraints and delays in hiring and training, introduces substantial uncertainty and a high probability of schedule slippage for ARDP applicants. Internal reports suggest that without significant mitigation, such as additional congressional funding or unprecedented contractor support, major advanced reactor application reviews docketed in FY2026 could experience average delays of 9 to 15 months [^]. This situation makes it unlikely that the U.S. will grant a new nuclear reactor license before 2027, as the NRC's review capacity, rather than technical merit, is emerging as the primary rate-limiting factor [^].
6. Will TerraPower and Kairos Power Secure Licenses Before 2027?
| Active Interventions | None admitted against TerraPower Natrium CPA or Kairos Power Hermes CPs [^] |
|---|---|
| TerraPower Natrium CPA FSER | Completed December 1, 2025 [^] |
| Kairos Power CP Status | Hermes (December 14, 2023) and Hermes 2 (November 21, 2024) CPs granted [^] |
As of February 2026, no anti-nuclear groups have initiated litigation. The NRC's Atomic Safety and Licensing Board has not admitted any active petitions to intervene from anti-nuclear or environmental groups, such as the Union of Concerned Scientists or Friends of the Earth, against TerraPower's Natrium commercial reactor Construction Permit Application (CPA) or Kairos Power's Hermes test reactor CPs [^]. TerraPower's Natrium CPA is in its final stages, with the NRC staff having completed its Final Safety Evaluation Report (FSER) on December 1, 2025, and finalized the Environmental Impact Statement (EIS) [^]. A Construction Permit for Natrium is highly probable in 2026.
Significant future litigation is expected for TerraPower's operating license. Despite the current absence of litigation, substantial latent risk exists, particularly for TerraPower's Natrium reactor. Concerns from groups like the Union of Concerned Scientists (UCS) regarding Natrium's non-traditional containment and use of liquid sodium coolant are highly likely to form formal contentions during the future Operating License Application (OLA) phase [^]. Obtaining an Operating License for a commercial reactor like Natrium before 2027 is effectively impossible due to multi-year construction timelines and the inevitable legal challenges that would cause significant delays. In contrast, Kairos Power secured construction permits for its Hermes (December 14, 2023) and Hermes 2 (November 21, 2024) test reactors through uncontested proceedings, with construction on Hermes having begun in May 2025 [^].
Kairos Power's Hermes offers the sole chance for a 2026 operating license. The only plausible, though low-probability, path for an operating license for a new nuclear reactor to be granted before 2027 involves Kairos Power's Hermes test reactor. With construction having commenced in May 2025 [^], an aggressive 18-20 month timeline could potentially see its completion and an Operating License issued before the end of 2026, assuming an expedited OLA review for a non-commercial test reactor.
7. Will a New SMR Reactor License Be Granted Before 2027?
| COL Application Status | No application submitted for NuScale SMR designs |
|---|---|
| Standard NRC Review Time | 30-36 months |
| NuScale First Plant Operation Target | End of 2030 |
No new nuclear reactor license is expected before January 1, 2027. This conclusion stems from the fact that no utility or entity has submitted a Combined License (COL) application to the NRC that references NuScale's certified Small Modular Reactor (SMR) designs, despite their approvals in 2020 and 2025. The multi-year licensing process cannot commence until an application is formally docketed, indicating that the initial acceptance review stage has not yet been reached.
NRC's COL application review typically requires at least 30 months. The U.S. Nuclear Regulatory Commission's (NRC) established review period for a Combined License (COL) application typically requires a minimum of 30 months, with a more realistic expectation of at least three years (36 months). Given that it is currently February 2026, completing such a process within the approximately 10.3 months remaining before the January 1, 2027, deadline is institutionally, technically, and legally impossible. The mandatory adjudicatory hearing, which is a final step in the process, remains years away since no application is currently under review.
Expedited reviews still would not grant a pre-2027 license. Even a May 2025 executive order aimed at expediting reviews to an ambitious 18-month timeframe would not lead to a pre-2027 license, as an 18-month review initiated in February 2026 would conclude in August 2027. Furthermore, NuScale's own corporate projections for its first operational plant by the end of 2030 align with a license grant in the 2027-2028 timeframe, rather than before. These factors consistently demonstrate the infeasibility of granting a license before 2027.
8. Will a New U.S. Nuclear Reactor Be Licensed Before 2027?
| Vogtle FSER to Commission Vote | 188 calendar days [^], [^] |
|---|---|
| Vogtle FSER Issuance Date | August 5, 2011 [^] |
| Q4 2026 License Vote Outlook | Highly improbable [^] |
The NRC's licensing process for Vogtle Units 3 & 4 established a 188-calendar-day interval. This period spanned from the public issuance of the Final Safety Evaluation Report (FSER) on August 5, 2011 [^], to the NRC Commission's final vote authorizing the license on February 9, 2012 [^], [^]. This approximate six-month timeframe represents the concluding administrative and deliberative stage following the NRC staff's comprehensive technical review [^], [^].
A Commission vote on a new reactor license by Q4 2026 is highly improbable. Achieving such a vote would necessitate an FSER issuance by mid-2026, consistent with the Vogtle timeline [^]. However, current advanced reactor projects, including Kairos Power's Hermes, TerraPower's Natrium, and X-energy's Xe-100, are presently in pre-application or early review phases [^]. These projects are encountering unique, first-of-a-kind regulatory challenges [^]. Consequently, it is extremely unlikely that any commercial power reactor application will complete the necessary multi-year reviews to allow for a Commission licensing decision by the close of 2026 [^].
9. What Could Change the Odds
Key Catalysts
Several key developments could drive the market for new nuclear reactor licenses higher. The U.S. Nuclear Regulatory Commission (NRC) is actively reviewing multiple applications, with potential decisions expected before January 1, 2027. This includes the construction permit for TerraPower's Natrium fast reactor in Wyoming, with a review completed in January 2026 [^]. Similarly, the NRC is evaluating the Combined Operating License (COL) for Fermi America's four Westinghouse AP1000 reactors in Texas, with applications submitted in mid-2025 and an executive order aiming for an 18-month approval timeline [^]. Holtec International's SMR-300 units for the Palisades site in Michigan and Dow's advanced nuclear reactor facility (Project Long Mott) in Texas are also under active review for construction permits or COLs [^]. Furthermore, the Accelerating Deployment of Versatile, Advanced Nuclear for Clean Energy (ADVANCE) Act, enacted in July 2024, is actively streamlining NRC licensing processes, with many actions completed by November 2025 and more rulemakings expected by mid-2026, which could expedite approvals [^].
Conversely, several factors could push against new reactor license grants before 2027. Despite legislative and executive efforts to accelerate processes, the inherent complexity and stringent safety requirements of nuclear licensing, coupled with potential public interventions or unforeseen technical issues, could lead to prolonged NRC review times for all pending applications [^]. There is also a risk of project withdrawals or cancellations, driven by escalating costs, financing challenges, or shifts in developer priorities, mirroring past instances like the NuScale Carbon Free Power Project (CFPP) withdrawal [^]. Finally, any significant negative policy reversals or the introduction of unexpected new regulatory hurdles could complicate or delay the licensing path for advanced reactors [^].
The period leading up to the end of 2026 will be critical for observing these catalysts. Active NRC reviews are ongoing for the TerraPower Natrium, Fermi America AP1000, Holtec SMR-300, and Dow Project Long Mott applications, with potential decisions anticipated throughout this timeframe [^]. By mid-2026, the NRC is expected to complete numerous rulemakings mandated by the ADVANCE Act, aiming to streamline regulations and facilitate faster licensing decisions [^]. While not directly licensing commercial reactors, the target for three pilot advanced reactors to achieve criticality by July 4, 2026, under a Department of Energy (DOE) program, could also influence the broader perception and demonstrate advanced reactor capabilities, potentially impacting the licensing environment [^].
Key Dates & Catalysts
- Expiration: January 01, 2027
- Closes: January 01, 2027
10. Decision-Flipping Events
- Trigger: Several key developments could drive the market for new nuclear reactor licenses higher.
- Trigger: The U.S.
- Trigger: Nuclear Regulatory Commission (NRC) is actively reviewing multiple applications, with potential decisions expected before January 1, 2027.
- Trigger: This includes the construction permit for TerraPower's Natrium fast reactor in Wyoming, with a review completed in January 2026 [^] .
12. Historical Resolutions
Historical Resolutions: 2 markets in this series
Outcomes: 0 resolved YES, 2 resolved NO
Recent resolutions:
- KXREACTOR-25DEC31: NO (Jan 01, 2026)
- REACTOR-24DEC31: NO (Jan 01, 2025)
Get Real-Time Research Updates
Sign up for early access to live reports, historical data, and AI-powered market insights delivered to your inbox.
