In a move towards sustainable space colonisation, scientists at the University of Potsdam (Germany) have created working solar panels from molten Moon dust, hopefully paving the way for lunar bases powered by materials already found on the Moon.
Why Haul It Up There If You Don’t Have To?
Transporting anything into space is expensive. In fact, launching just one kilogram of material to the Moon currently costs around one million euros! So, when the idea of building a future lunar base comes up, energy will become one of the trickiest challenges. For example, how do you supply enough power to sustain human life, scientific activity, and possibly even construction, without blowing the budget on rocket fuel?
That’s the question a team led by Dr. Felix Lang at the University of Potsdam’s Institute of Physics and Astronomy set out to answer. Together with colleagues from the Technical University of Berlin, they’ve now demonstrated that it may be possible to manufacture solar panels directly on the Moon using its most abundant resource, i.e. lunar regolith (moon dust).
Turning Moon Dust into Moonglass
Lunar regolith, the loose, dusty material that covers the Moon’s surface, has long been seen as a nuisance for astronauts. However, it now seems that it could become one of the Moon’s most valuable resources. This dusty substance, composed mostly of silicon dioxide (SiO₂), aluminium oxide (Al₂O₃), and calcium oxide (CaO), can be melted into glass with the right heat source.
Using a lunar regolith simulant based on Apollo mission samples, the researchers melted this Moon dust into what they’re calling “moonglass”. Then, they layered it with an ultra-thin coating of perovskite, a crystalline material that’s light, flexible, and highly efficient at converting solar energy.
The result was a lightweight, radiation-resistant solar cell built, crucially, using minimal resources from Earth.
Scalable, Simple, and Surprisingly Resilient
What makes this discovery stand out isn’t just the ingenuity, it’s the practicality. For example, the solar cells require only a tiny amount of imported material. According to Dr. Lang, “These solar cells require ultrathin absorber layers of 500 to 800 nanometres only, allowing the fabrication of 400 square metre solar cells with just one kilogram of perovskite raw material brought from Earth.”
That’s a dramatic reduction in launch mass, potentially slashing it by 99 per cent compared to conventional space-based solar panels, which typically rely on heavy glass and other Earth-manufactured materials.
Even better, the production process doesn’t need any complex refining or purification. “The highlight of our study is that we can extract the glass we need for our solar cells directly from the lunar regolith without any processing,” Lang explained. “The process is also scalable so that the solar cells can be produced with little equipment and very little energy input.”
The team even tested the feasibility of melting regolith using a large curved mirror and concentrated sunlight in order to demonstrate that solar power itself could drive the production of the panels.
How Efficient Are They?
As may be expected, using moonglass instead of conventional transparent glass presents some limitations. For example, the material is milky and varies in colour and opacity depending on the regolith source, which affects how much sunlight can pass through.
Current prototypes have reached efficiencies of around 12 per cent, which is less than half of the 26 per cent typically achieved by standard perovskite cells. However, this is no small feat given the conditions. As Lang says: “In the beginning, it was unclear whether we could produce them in sufficient quality on impure regolith lunar glass.”
Refinements
That said, computer models suggest that (with refinements) these solar cells could eventually match the performance of their Earth-bound counterparts. Given their resilience to solar and cosmic radiation, which is critical in the Moon’s harsh, atmosphere-free environment, the trade-off in early efficiency may be worth it.
Building the Infrastructure for a Lunar Power Plant
Producing solar panels from local materials is just one piece of a much bigger puzzle. For any lunar energy project to succeed, a full infrastructure is needed, e.g. from regolith collection and glass production to solar panel assembly and maintenance.
Dr. Michael Duke from the Lunar and Planetary Institute points out that this kind of manufacturing will require significant technological development. “From excavating regolith to connecting individual cells into arrays, the engineering challenges are considerable,” he said. However, if these hurdles can be overcome, the benefits could extend far beyond the Moon.
An example of one future possibility is using the Moon as a launchpad to produce solar cells for satellites or space stations. Since launching from the Moon takes far less energy than from Earth, a Moon-based solar factory could support a wider network of off-planet energy production.
Critics Cautiously Optimistic
As great as the invention sounds, not everyone is convinced just yet. For example, although Nicholas Bennett from the University of Technology Sydney called the work “a first successful use of moonglass in a functioning solar cell,” he cautioned that the next big challenge lies in scaling production outside of the lab.
Other commentators have noted the advantages of using regolith but have also highlighted how questions remain about how feasible it would be to build large-scale systems on the Moon’s surface, especially with current robotics and autonomous technologies still developing.
That said, there appears to be a strong scientific interest in pushing the concept forward. The Potsdam team is now investigating whether the glass quality could be improved by using magnets to filter out iron content before melting the regolith.
A Future Built on Dust and Light?
As the world gears up for a new era of space exploration, with NASA’s Artemis missions aiming to return humans to the Moon and establish a sustainable presence, technologies like this could prove pivotal. Space agencies and private companies alike are increasingly looking at “in-situ resource utilisation” (ISRU) as the key to long-term success.
It’s also worth noting here that this isn’t the only innovation involving lunar dust. Other research teams are exploring how to 3D-print Moon bases from regolith, extract oxygen from it for breathing or fuel, and even melt lunar ice using space mirrors to create drinkable water.
As Dr. Lang puts it, the work is already sparking the next wave of ideas: “We are already thinking, ‘Can we make this work with Mars regolith?’” It seems that the age-old annoyance of Moon dust could become a cornerstone of humanity’s off-world future.
What Does This Mean For Your Organisation?
The idea of building solar panels from Moon dust seems to be both clever and a logical response to the logistical and environmental costs of hauling materials from Earth. By proving that regolith can be turned into usable glass without any complex processing, the Potsdam team appears to have taken a major step toward true in-situ resource use. If scaled successfully, this method could allow future lunar bases to generate their own electricity with minimal imports, reducing reliance on costly Earth launches and drastically cutting the carbon footprint of long-term missions.
For space agencies, that means a more sustainable model for exploration, and one that’s not only greener, but also more resilient. For scientists, it opens up the possibility of powering instruments, life support systems and habitats in some of the harshest conditions imaginable. Also, for commercial space firms, it offers a route to building infrastructure directly on the Moon using fewer resources and less energy.
UK businesses involved in clean energy, advanced materials, aerospace engineering or autonomous systems could have a key role to play here. As space programmes increasingly look for Earth-based partners to develop and supply off-world technologies, firms that specialise in thin-film photovoltaics, automated construction, or regolith processing could find themselves part of the next space economy. With the UK already supporting innovation in lunar missions through partnerships with ESA and its own Space Agency initiatives, the groundwork is being laid for real involvement in future Moon infrastructure.
However, before getting too carried away, it’s worth noting that there’s still plenty to prove. For example, efficiency gains are needed, large-scale production methods must be tested, and robotic assembly systems will need to be far more advanced than what exists today. Accepting that there are still some major challenges, it’s also worth acknowledging that as a proof of concept, this research challenges long-held assumptions about what’s possible in space. It essentially means that the Moon is no longer just a blank canvas but is becoming a resource in its own right.
As the line between space innovation and sustainable engineering continues to blur, it’s increasingly likely that the breakthroughs made for lunar survival will feed directly back into how we build, power and conserve resources here on Earth.
