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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesThe United States has set a goal of readying a lunar surface fission reactor for launch by 2030. China and Russia have a documented plan for an International Lunar Research Station, but its published station milestones do not by themselves confirm when—or whether—a reactor will be deployed there. The competition is real, but the two public plans are not equivalent: one is a U.S. reactor-development target, while the other is a broader joint lunar-infrastructure program.
What is the current state of the lunar reactor race?
NASA and the U.S. Department of Energy (DOE) announced a renewed partnership on January 13, 2026, to develop, fuel, authorize, and ready a fission surface power system for launch by 2030. That is an announced goal, not evidence that a reactor has been completed, approved for launch, or delivered to the Moon.
The U.S. system’s public power target has also changed as the mission ambition has grown. Earlier concept work examined a 40-kilowatt-electric (kWe) class demonstration system; NASA’s 2025 direction moved toward at least 100 kWe for long-term human operations. The larger target is a development objective, not a final, publicly established reactor design.
| Program or milestone | What official sources say | What that establishes |
|---|---|---|
| U.S. Fission Surface Power | NASA and DOE said on January 13, 2026, they intend to ready a lunar surface reactor for launch by 2030. | A U.S. development and launch-readiness goal; not a deployed reactor. |
| Earlier U.S. concept | NASA’s Phase 1 concept requirements included 40 kWe, a mass below six metric tons, and a decade-long autonomous-operation goal. | A dated concept baseline, not the later 100-kWe target. |
| Later U.S. target | NASA’s August 2025 directive cited industry feedback for at least 100 kWe; a subsequent industry update described a first-quarter FY2030 target. | A later target and schedule, not proof of a selected or completed design. |
| China–Russia ILRS | CNSA describes a basic International Lunar Research Station planned by 2035 and an expanded phase by 2045. | A broader station program and schedule; the cited CNSA materials do not set out a reactor deployment milestone. |
| China–Russia reactor claim | NASA’s August 2025 directive says China and Russia had announced a joint reactor effort targeting the mid-2030s. | A reactor schedule reported by NASA; the CNSA station material cited here independently confirms the station plan, not that reactor date. |
Those distinctions matter. A power target, a station milestone, a reactor announcement, a launch-readiness goal, and a reactor operating on the lunar surface are different stages. Public statements establish ambitious plans; they do not establish that either side has already fielded a lunar reactor.
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Why put a nuclear reactor on the Moon?
A fission surface power system splits uranium atoms to produce heat, then converts that heat into electricity. Unlike solar generation, it can provide power without relying on sunlight. That makes it a candidate for sustained operations when sunlight is unavailable or insufficient, including during lunar night and in locations where solar supply may not meet mission needs.
A lunar night lasts about 14 Earth days, although the exact duration varies with location and illumination. DOE describes the south-pole mission context as one in which solar power may not supply enough sustained electricity for extended operations. Continuous power could support habitats, rovers, scientific equipment, and the use of local resources; NASA and DOE present those as potential mission needs, not as proof that a specific lunar base is already planned around a particular reactor.
The underlying power technology is not entirely without spaceflight precedent. DOE says the SNAP-10A fission power system launched in April 1965 and operated at 500 watts for 43 days in a flight test. That historical demonstration is not equivalent to the much larger, long-duration lunar system now being pursued.
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What the U.S. program has announced
From a 40-kWe concept to a higher power target
NASA’s program overview describes a 40-kWe-class system for the Moon in the early 2030s. NASA’s account of Phase 1 concept requirements specified 40 kWe, a mass below six metric tons, and a goal of operating autonomously for a decade. In August 2025, NASA said industry feedback indicated that long-term human operations, including in-situ resource utilization, would need at least 100 kWe. A later NASA industry update described a system of at least 100 kWe.
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The figures refer to different stages and should not be combined into one fixed specification. The 40-kWe figure belongs to the earlier concept work; the 100-kWe figure is the later target. NASA’s update also described closed Brayton-cycle power conversion, but the material cited here does not establish a final selected reactor design.
Partnership, industry engagement, and schedule
NASA’s January 2026 announcement describes renewed collaboration with DOE to develop, fuel, authorize, and ready a lunar surface reactor for launch by 2030. NASA’s industry update gives a more specific first-quarter fiscal year 2030 target and notes that a second draft partnership announcement was issued on December 5, 2025, after industry feedback and refinement of Artemis compatibility information. These are planning milestones; the announcement does not mean the system is already ready to launch.
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NASA says the system is expected to operate for years without refueling. That is a stated design ambition, not a record of operating performance for this lunar system. NASA has also described Fission Surface Power as relevant to Artemis and possible future Mars missions.
Funding figures and their limits
NASA’s August 2025 directive reported that the FY2026 President’s Budget Request included $350 million for a new Mars Technology program, increasing to $500 million beginning in FY2027. Those are amounts in a budget request as described by NASA, not confirmation of final appropriations or actual spending. The same directive said NASA had invested more than $200 million in Fission Surface Power technologies since 2000.
What China and Russia have actually committed to
China’s CNSA and Russia’s Roscosmos described cooperation on the International Lunar Research Station (ILRS) in a joint statement dated April 29, 2021. They characterized it as a multipurpose scientific research facility on the lunar surface and/or in orbit, intended for long-term autonomous operation with prospective human presence and open to international partners.
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CNSA’s April 2025 account places a basic station in the lunar south-pole region by 2035 and an expanded phase in 2045. The described program includes surface and orbital facilities, with capabilities for energy supply, communications, navigation, transport, research, and ground support. Those are station-level plans: they do not, on their own, establish that a fission reactor has been selected or scheduled.
NASA’s August 2025 directive says China and Russia had announced on at least three occasions since March 2024 a joint effort to put a reactor on the Moon by the mid-2030s. The specific reactor timing should therefore be attributed to NASA’s account. The CNSA materials cited here support the wider ILRS schedule, not an independently stated reactor date.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What makes a lunar reactor difficult to build and operate?
A reactor is only one part of a surface power system. NASA’s technical trade study identifies design questions involving the reactor and shielding, power conversion, heat rejection, power management and distribution, and integration with the mission. NASA and DOE also identify practical constraints that must be addressed across the complete system:
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- Autonomous operation: NASA’s earlier concept called for a decade-long operating capability without human intervention. The system must be designed to function with limited or no direct maintenance.
- Radiation protection: Shielding and radiation dose are explicit design concerns, including how to protect people and sensitive equipment while meeting mass and mission constraints.
- Heat rejection: Fission produces heat as well as useful electricity. The system needs a way to manage and reject heat in the lunar environment.
- Power conversion and distribution: The reactor’s heat must be converted to electricity, then managed and delivered to mission loads. NASA’s later update describes closed Brayton-cycle conversion, while the overall design still has to address power management and distribution.
- Launch and landing loads: DOE highlights structural robustness against vibration during launch or landing and protection for the core, coolant, and electronics.
- Temperature extremes: The equipment must survive and operate across severe lunar temperature conditions, in addition to the long periods without sunlight that motivate fission.
- Mission integration: A power system must fit the launch, landing, and surface-operation architecture. NASA’s December 2025 industry update specifically notes refinement of Artemis compatibility information.
These requirements interact. For example, shielding, structural strength, thermal equipment, and conversion hardware all affect system mass and how the power unit can be integrated with a lunar mission. A published power number alone cannot show whether a system is safe, launchable, maintainable, or compatible with a particular landing plan.
How to judge future claims about the race
When either program announces progress, the milestone and its source matter more than the word “reactor” in a headline. A useful comparison should distinguish:
- Power target and date: Is the figure an earlier concept value, a later requirement, or the output of a completed system?
- Conversion approach: Has an architecture such as closed Brayton conversion been described, or has a final design actually been selected?
- Operating goal: Is duration a design target, a test result, or demonstrated operation on the Moon?
- Safety and shielding: What is stated about radiation dose, shielding, and protection of people and equipment?
- Launch and surface readiness: Has the system advanced from planning and industry engagement to testing, authorization, launch, landing, and operation?
- Mission role: Is the claim about one power unit, a wider station, or the infrastructure needed for long-term activity?
- Source and attribution: Does a primary agency source state the reactor milestone itself, or does it describe a broader station plan while another source reports the reactor claim?
On the public information described above, there are no two final competing reactor designs with enough disclosed specifications for a direct performance comparison. The clearest comparison is between dated program goals and the stage each source actually documents.
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