NASA is seeking industry proposals and feedback for a lunar fission surface-power system targeted to produce at least 100 kilowatts of electricity and reach the Moon by 2030. The plan is real, but it is not yet an operating power plant or a confirmed commercial contract: the public material reviewed does not identify a final builder or operator for the proposed Lunar Reactor-1.
What NASA is asking companies to build
The proposal concerns a complete fission surface power system, not just a reactor core. NASA’s newer direction calls for at least 100 kilowatts electric (100 kWe), operation in the lunar south-polar region, and a closed Brayton-cycle power-conversion system. The installation would also need heat-rejection radiators, shielding, controls, power-management and distribution equipment, deployment hardware, and interfaces with a lunar lander.
NASA describes the system as infrastructure for sustained lunar activity. It is intended to run through lunar night and in locations with little or no sunlight, rather than serve as a short-lived technology demonstration. NASA’s industry-feedback notice is available at NASA Glenn.
Why nuclear power matters on the Moon
Solar power remains useful where sunlight is available, but lunar darkness can last more than 14 Earth days near the poles. Permanently shadowed regions receive no direct sunlight. Batteries, fuel cells, or other storage can bridge some gaps, but a fission reactor can produce electricity continuously without relying on local illumination.
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Reliable power could support:
- Habitats, life-support equipment, and thermal control during lunar night.
- Rovers and other mobility systems.
- Communications and navigation networks.
- Scientific instruments and resource-prospecting equipment.
- Possible in-situ resource utilization, including systems that process local materials.
- Power sales to future commercial, international, or government lunar users.
That makes the reactor an enabling utility for Artemis-era infrastructure and, potentially, later Mars systems. It does not make solar obsolete: well-illuminated sites with modest demand may still favor solar and storage.
How the current plan developed
NASA’s present 100-kWe-class effort follows smaller concept studies rather than appearing from nowhere.
| Milestone | What it establishes |
|---|---|
| 2022 Phase 1 studies | NASA selected three commercial teams to develop preliminary designs around 40 kWe, roughly 10 years of operation without human intervention, and a mass target below six metric tons. |
| August 2025 | NASA issued an initial Request for Information and a draft Announcement for Partnership Proposals. |
| December 2025 | NASA issued a revised draft after industry feedback. |
| January 13, 2026 | NASA and the Department of Energy announced a joint effort covering reactor development, fuel, authorization, and launch preparation. |
| 2030 target | NASA’s public program goal is to land the planned Lunar Reactor-1 by 2030. |
The earlier 40-kWe concepts should not be presented as the same machine as the newer 100-kWe target. NASA’s overview of the earlier work is at Fission Surface Power, with additional study details in its 2022 project account.
What the NASA–DOE partnership changes
NASA sets mission and system requirements; DOE contributes nuclear engineering, fuel, safety, authorization, and national-laboratory capabilities. The agencies’ memorandum describes development and authorization work, not a completed nuclear license. Fuel production, launch safety, security, testing, and mission approval still have to be addressed.
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NASA’s January 2026 announcement is the clearest statement of the interagency commitment: NASA and DOE to develop a lunar surface reactor by 2030.
What “commercial partners” could mean
The draft partnership framework reportedly contemplated a company retaining ownership of the reactor and selling electricity to NASA and possibly other lunar customers. That is a proposed structure, not a confirmed final agreement. It raises practical questions that any eventual solicitation or contract would have to answer:
- Who finances design, testing, fuel, launch integration, and deployment?
- Does NASA buy the hardware, buy electricity, or use a hybrid arrangement?
- Who controls operations and accepts launch, landing, nuclear-safety, and performance risk?
- How are electricity use, outages, maintenance, and liability measured on the lunar surface?
- What government data rights apply while proprietary reactor technology remains protected?
A private operator would need anchor customers. NASA missions would likely provide the first demand, while a broader business case would depend on multiple habitats, rovers, scientific users, or other national space programs. No established lunar electricity market exists today.
Why this is likely a consortium project
A credible proposal may combine organizations with different specialties:
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- Advanced or microreactor design and nuclear fuel qualification.
- Heat pipes, reactor materials, and closed-Brayton turbomachinery.
- Space-qualified radiators, shielding, power distribution, and autonomous controls.
- Lunar landers and heavy-payload delivery.
- Ground testing, safety analysis, authorization, cybersecurity, and physical security.
NASA’s earlier studies emphasized pairing terrestrial nuclear companies with space-system companies. NASA’s June 2026 collaboration announcement names Lockheed Martin in a separate effort to mature compact power for permanently shadowed regions; it does not establish Lockheed Martin as the selected builder or operator of Lunar Reactor-1. See NASA’s technology-collaboration announcement.
The hardest engineering and program risks
Mass, landing, and deployment
The reactor must survive launch, lunar landing, deployment, and possibly relocation within the payload limits of an available lander. Earlier studies evaluated a system below roughly six metric tons and a representative stowed envelope of about four meters in diameter by six meters in length. Those figures belong to the earlier design work, not a guaranteed specification for the new system.
Heat rejection
A reactor produces heat continuously. With no atmosphere to carry heat away, large radiators must reject it. Radiators add mass and deployment complexity and must tolerate dust, micrometeoroids, temperature swings, and potential damage.
Shielding and radiation
Shielding must protect nearby equipment and future crews without consuming the payload budget. NASA technical work examines dose limits, distance from the reactor, and fault-tolerant operation; the representative requirements are discussed in NASA technical report 20250000841.
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Autonomy and faults
The system may need to start, regulate output, detect failures, shut down safely, and recover from faults without astronauts nearby. Loss of communications, power-conversion failure, radiator-deployment failure, dust contamination, or thermal problems could threaten both the reactor and the lunar users depending on it.
Fuel, launch safety, and security
Fuel form and availability, transport, accidental launch or impact scenarios, physical security, cybersecurity, and the division of authority among NASA, DOE, launch providers, and other agencies are central schedule risks. Authorization work must be completed before launch; the public sources do not show that this approval is finished.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How realistic is the 2030 date?
NASA’s 2030 date is a program target, not a guaranteed launch or full-power commissioning date. A reactor would have to pass design reviews, qualification tests, fuel production and authorization, lander integration, launch approval, lunar landing, deployment, startup, and sustained-power checks.
The distinction matters financially and technically. A proposal can be accepted for study without being selected for flight; a flight contract can be signed without a completed reactor; and a landed reactor can still fail to deliver useful power if its conversion, radiator, distribution, or control systems fail.
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What is confirmed—and what is not
| Publicly supported | Not established in the available material |
|---|---|
| NASA–DOE cooperation on a lunar surface reactor. | A final commercial builder or operator for Lunar Reactor-1. |
| A newer direction targeting at least 100 kWe and a closed Brayton cycle. | A completed, fueled, licensed, or flight-qualified reactor. |
| Industry information requests and draft partnership proposals in 2025. | A guaranteed launch, landing, or full-power date in 2030. |
| A public target for the lunar south-polar region. | A functioning lunar electricity market or confirmed non-NASA customers. |
How to judge a future proposal
- Delivered power: Check whether the claimed output includes degradation, faults, shielding, and distribution losses.
- Mass and volume: Match the complete system to a real lander and payload interface.
- Thermal design: Examine radiator area, deployment, dust tolerance, and redundancy.
- Fuel maturity: Verify availability, qualification, transport, and launch-safety planning.
- Autonomy and fault tolerance: Require credible remote operation and recovery scenarios.
- Ground testing: Look for representative full-system or subsystem tests on Earth.
- Authorization: Identify the nuclear-safety, security, and mission-approval pathway.
- Commercial demand: Name customers beyond NASA and explain how power will be distributed.
- Schedule: Include design maturation, qualification, fuel, lander integration, and commissioning—not just a target landing year.
What success would change
If delivered and operated as intended, a 100-kWe-class plant could support multiple lunar users instead of a single instrument. It could make longer-duration habitats, communications networks, resource-processing experiments, and science operations less dependent on sunlight. It would also provide experience in operating nuclear power, autonomous controls, heat rejection, and maintenance far from Earth—capabilities relevant to later Mars missions.
NASA also lists non-fission options, including regenerative fuel cells and radioisotope systems, in its lunar-surface technology portfolio. Those systems can complement nuclear fission or serve smaller loads; they are not equivalent replacements for a 100-kWe-class reactor.
The Bottom Line
NASA is moving from 40-kWe concept studies toward a NASA–DOE and commercial-partnership effort aimed at a 100-kWe-class lunar reactor by 2030. The important qualification is that solicitation activity and interagency development commitments do not yet prove a final commercial award, an authorized reactor, a launch contract, or an operating lunar utility.
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