This isn’t just solar — it’s solar anywhere.
What if you could paint your house — and suddenly, it powered itself? That’s the promise behind a breakthrough from researchers in Melbourne, who’ve developed a solar paint that converts sunlight into electricity using nothing more than humidity in the air.
This isn’t just a coating — it’s a functional solar harvesting material. The paint contains a newly synthesized compound called synthetic molybdenum-sulfide, which pulls moisture from the air and splits it into hydrogen. That hydrogen can then be stored or converted into clean electricity using an attached fuel cell or energy unit.
Unlike traditional solar panels, solar paint doesn’t require direct sunlight. It even works on cloudy days and humid walls. It’s cheap to produce, flexible to apply, and could be brushed onto rooftops, fences, cars, or even portable tents in off-grid locations.
This could transform energy access in rural areas or developing regions. One coat on a school rooftop could generate power for lights, fans, or water purifiers for years — no panels, no wires, no grid needed.
The Australian team is now working on scaling it for industrial use, and global energy firms are already lining up to license the tech.
Professors from the research team at RMIT University who have developed the hydrogen-extracting solar paint. Image source: RMIT
what sounds more innovative than ‘solar paint’? A paint that can generate electricity, but still works as normal paint? The ability to turn not only a roof, but an entire building into a solar-generating surface? If that doesn’t scream innovation, then I don’t know what does.
So far, the lifeblood of the solar industry has been traditional photovoltaic solar panels. Solar panels are a well-proven technology that save homeowners a ton of money. However, the hassle and expense of rooftop panel installations often deter people from switching to solar energy.
Now imagine a world where we could simply paint our roofs and walls with a type of paint that can generate electricity. Though we’re pretty far off from actually implementing this technology, it’s still exciting to think about.
So, what is solar paint? The most important thing to know is that it isn’t a single product; currently there are three different technologies that are referred to as ‘solar paint’.
The idea of using a paint-like substance to generate electricity has been discussed within the scientific community for many years. Only recently have the potential for real-world applications emerged.
There are three separate innovations that are classified as solar paints. Here we explore what they are and what they might mean for the future of solar energy.
A team of researchers from the Royal Melbourne Institute of Technology (RMIT) have developed solar paint that generates energy from water vapor.
Put simply, the paint works by absorbing moisture from the air and using solar energy to break the water molecules into hydrogen and oxygen. The hydrogen can then be used to produce clean energy.
This is how the paint actually works: it contains a newly developed substance, synthetic molybdenum-sulfide. Absorbing moisture from the air, it works similarly to silica gel, which you’ve undoubtedly seen packaged with consumer products in order to keep them dry.
This solar paint also contains titanium oxide, a substance already present in conventional paint. The titanium oxide helps the paint use solar energy to break down the absorbed moisture into hydrogen and oxygen particles. The hydrogen can then be used to produce clean energy.
RMIT lead researcher Dr. Torben Daeneke stated, “Our new development has a big range of advantages. There’s no need for clean or filtered water to feed the system. Any place that has water vapor in the air, even remote areas far from water, can produce fuel.”
What makes this technology particularly special is that it outputs hydrogen, a clean source of fuel and energy storage. If they reach the point where they are ready for commercial use, this hydrogen-collecting solar paint might just be an environmentally friendly and cost-effective way to collect hydrogen for producing energy.
Here are 3 ways in which solar paint could be used in the future:
- Add solar paint to existing solar setups. Solar paint may work as a great way to enhance existing solar setups. People with solar panels installed could create an additional energy source by painting their roofs and walls with solar paint.
- Solar painted vehicles. With some tweaks, solar paint could be a great way to add solar-generating capacity to vehicles.
- A standalone power-generating solar setup. With increased efficiency levels and cheaper production costs, high-quality solar paint could one day start working as a primary source of power generation for homes and businesses.
