This article is based on an official press release from Lockheed Martin and additional industry reporting regarding NASA’s Fission Surface Power program.

Lockheed Martin Advances Fission Surface Power to Meet NASA’s New 100-Kilowatt Lunar Goal

As the global race to establish a permanent human presence on the Moon accelerates, the engineering challenges of the lunar environment are becoming increasingly critical. Foremost among them is the “lunar night,” a two-week period of freezing darkness that renders standard solar power ineffective. In response, Lockheed Martin is advancing its Fission Surface Power (FSP) technology, a nuclear solution designed to provide continuous, reliable energy for future lunar bases.

According to an official press release from Lockheed Martin, the company is positioning its fission reactor concept as the backbone of a sustainable lunar grid. This technology is essential not only for survival during the long lunar night but also for powering the industrial machinery required for In-Situ Resource Utilization (ISRU), such as mining water ice for fuel.

Recent industry developments have significantly raised the stakes. As detailed in NASA directives from late 2025, the agency has pivoted its requirements, moving from a 40-kilowatt (kWe) demonstration to a more ambitious 100 kwe target by 2030. This shift underscores the urgency of the Artemis program and the need for robust power infrastructure to support a sustained human footprint.

Conquering the Lunar Night

The primary driver for nuclear power on the Moon is the celestial mechanics of the lunar cycle. A single lunar day lasts approximately 29.5 Earth days, meaning any location on the surface experiences roughly 14 consecutive days of sunlight followed by 14 days of darkness.

Lockheed Martin highlights the severity of this environment in their release. During the lunar night, temperatures can plummet to -280°F (-173°C). Relying solely on solar power would require massive battery banks to store two weeks’ worth of energy, a solution that is currently prohibitively heavy and expensive to launch from Earth.

Fission Surface Power offers a solution by operating independently of the Sun. By splitting uranium atoms in a reactor, the system generates heat that is converted into electricity, providing a steady “baseload” of power 24/7. This ensures that life support systems, rovers, and scientific experiments can continue uninterrupted regardless of the time of day.

NASA’s Strategic Pivot: The 100 kWe Requirement

While Lockheed Martin’s initial designs were part of a Phase 1 effort targeting a 40 kWe system, the landscape of lunar exploration changed in August 2025. According to industry reporting and NASA directives, the agency scrapped the lower power target in favor of a 100 kWe class reactor. This upgrade is intended to support a larger lunar base and industrial processing capabilities sooner than originally planned.

The timeline for this deployment is aggressive. NASA aims to have a launch-ready reactor by 2030. This acceleration is widely viewed by industry analysts as a strategic response to the International Lunar Research Station (ILRS), a competing project by China and Russia that targets a similar nuclear-powered presence in the mid-2030s.

Lockheed Martin has publicly embraced this shift. In statements regarding the program, company leadership has affirmed their readiness to scale their designs. While the fundamental physics of fission remain the same, the engineering challenge lies in packaging a more powerful reactor into a form factor that can be launched on a rocket and landed safely on the lunar surface.

Technical Innovations: The Hybrid Grid

Lockheed Martin’s approach to lunar energy is not limited to nuclear power alone. The company is advocating for a “Lunar Power Grid” that integrates fission with solar technology to maximize efficiency and redundancy.

Vertical Solar Array Technology (VSAT)

Alongside the reactor, Lockheed Martin is developing Vertical Solar Array Technology (VSAT). These are tall, deployable masts designed specifically for the lunar South Pole, where the sun remains low on the horizon. By capturing this low-angle light, VSAT can handle peak power loads during the lunar day.

Thermal Management Systems

One of the most significant technical hurdles for a lunar reactor is cooling. On Earth, power plants use water or air to dissipate excess heat. In the vacuum of space, there is no air to carry heat away. According to Lockheed Martin, their engineering teams are focusing heavily on advanced radiator designs and thermal management systems to reject waste heat efficiently, a critical component for preventing the reactor from overheating.

Power Conversion

To convert the reactor’s heat into electricity, the system is expected to utilize a Brayton cycle engine. This method uses heated gas to spin a turbine and is favored by NASA for its high efficiency and scalability compared to other methods, such as Stirling engines.

AirPro News Analysis

The shift from a 40 kWe to a 100 kWe requirement represents a massive leap in engineering complexity, particularly given the 2030 deadline. While the underlying nuclear technology is mature, the U.S. has flown nuclear reactors in space as far back as 1965, the integration of such a high-power system into a lander remains a formidable challenge.

We observe that this pivot signals a change in NASA‘s risk tolerance. By demanding a full-scale industrial power source immediately rather than a smaller demonstrator, the agency is acknowledging that power is the bottleneck for all other lunar ambitions. Without 100 kWe, producing propellant from lunar ice, a key goal for Mars missions, would be nearly impossible. Lockheed Martin’s strategy of pairing nuclear with solar (VSAT) appears to be a prudent hedge, offering a diversified grid that mimics terrestrial power infrastructure.

Frequently Asked Questions

Why can’t we just use batteries for the lunar night?
Current battery technology is too heavy. Launching enough batteries to power a base for 14 days would require multiple heavy-lift rocket launches, making it economically unviable compared to a compact nuclear reactor.

Is the reactor safe to launch?
Fission surface power systems are designed to be launched “cold,” meaning the reactor is not turned on until it has safely landed on the Moon. It contains no highly radioactive fission products during launch.

When will this reactor be on the Moon?
Under the new NASA directive issued in August 2025, the target for a launch-ready 100 kWe reactor is 2030.

Sources

• Lockheed Martin: Fission Surface Power
• NASA Directives & Solicitations (August 2025)