Each year, over 1.3 billion tons of food ends up in the trash enough to feed billions or power entire cities, if only we knew how. At the same time, millions of people live without reliable electricity, especially in places where sunlight is inconsistent. What if the wilted lettuce and banana peels we toss out could do more than rot in landfills? What if they could generate clean energy even when the sun isn’t shining?
That’s exactly what one Filipino student has figured out. In a country hit by frequent storms and energy insecurity, engineering student Carvey Ehren Maigue created a solar panel that runs on food waste and captures ultraviolet (UV) light to produce electricity even in cloudy or shaded conditions. His invention doesn’t just challenge how we think about solar power it redefines what we consider waste.
This isn’t future tech. It’s already working and it just might change how we power the world.
Turning Waste into Power
Food waste and energy access are usually treated as separate global crises. One chokes landfills and contributes to greenhouse gas emissions. The other leaves millions in the dark, especially in regions where weather or urban congestion blocks consistent sunlight. But Carvey Ehren Maigue’s invention brings both issues under one solution using spoiled produce to generate renewable energy.
The system, called AuREUS (Aurora Renewable Energy and UV Sequestration), was born out of a simple observation: ultraviolet (UV) light still gets through even when the sky is overcast. Maigue realized that conventional solar panels, which rely on visible light, were missing this abundant energy source. His idea was to create a panel that could absorb UV light and keep producing electricity regardless of weather or sun position.
To make that happen, he turned to a surprising raw material rotting fruits and vegetables. These organic materials contain compounds that naturally absorb UV radiation. By extracting these compounds and embedding them in a resin panel, Maigue created a material that captures UV light, re-emits it as visible light, and sends that light to photovoltaic cells to generate power.
This isn’t just creative it’s practical. While traditional solar panels go idle under cloud cover, AuREUS remains active. It performs well in shaded urban environments, making it ideal for cities where rooftop space is limited but vertical surfaces are everywhere.
The invention earned Maigue the James Dyson Sustainability Award, not just for its innovation, but for its impact. It repositions food waste from environmental burden to renewable asset and opens a new path for clean energy one that’s cheaper, more adaptable, and rooted in the materials we already throw away.
How It Works
Credit : James Dyson Foundation
At its core, AuREUS works by doing something traditional solar panels can’t: making use of ultraviolet (UV) light. Unlike visible sunlight, UV rays pass through clouds, bounce off buildings, and remain present even on gloomy days. That means AuREUS panels can keep generating electricity when standard solar systems shut down.
The panels themselves are made from a clear resin embedded with organic particles extracted from spoiled fruits and vegetables. These particles have a natural ability to absorb UV light and re-emit it as visible light. That re-emitted light is then directed toward photovoltaic (PV) cells placed along the edges of the panel. The PV cells convert the light into usable electricity just like they would in a regular solar panel.
This light-guiding process, known as internal reflectance, is what gives AuREUS its edge. Instead of requiring wide, flat surfaces that face the sun, the panels can be mounted vertically on windows, walls, or curved surfaces—and still capture energy efficiently. The technology draws inspiration from the aurora borealis, where high-energy particles in the atmosphere are transformed into visible light. Maigue applied this same principle using plant-based compounds.
Notably, the materials used are biodegradable and locally sourced. Over 78 different crops were tested during development, with nine proving especially effective in UV absorption. Around 80% of the luminescent compounds in current prototypes come from natural sources, and ongoing research aims to replace the remaining synthetic components.
What sets AuREUS apart isn’t just its innovation, but its simplicity. It uses everyday waste, basic materials, and nature’s own chemistry to do something solar panels have struggled with for decades: deliver consistent energy, even when the sun isn’t out.
Real-World Impact and Sustainability
The promise of AuREUS goes far beyond its clever use of UV light. It addresses two urgent global problems food waste and access to clean energy with a single, scalable solution.
Food waste is not just a missed opportunity; it’s a climate threat. When organic matter decomposes in landfills, it releases methane, a greenhouse gas far more potent than carbon dioxide. At the same time, many communities especially in tropical or disaster-prone regions struggle with energy gaps due to inconsistent sunlight or limited infrastructure. AuREUS tackles both by turning discarded crops into a renewable power source that works in low-light and urban environments.
This dual-purpose function makes the technology especially relevant for cities. Most solar systems require large, sun-exposed areas usually rooftops or open fields. In contrast, AuREUS panels can be installed on vertical surfaces like windows, building facades, and even public infrastructure such as bus stops or walkways. This opens the door to vertical solar farming in densely populated areas where space is limited and energy demand is high.
It also creates new value chains. Damaged or surplus crops, which would otherwise rot and generate emissions, can now be redirected into the production of solar panels. This supports local farmers and strengthens a circular economy model one where waste is no longer a burden, but a raw material for clean energy.
Early tests show that a single kilogram of crop waste can produce up to 108 watts of power. That might not seem like much, but scaled across buildings and public infrastructure, it adds up. In terms of sustainability, AuREUS cuts down on mining, manufacturing emissions, and land use associated with conventional solar production.
By integrating renewable energy generation with waste reduction and urban design, AuREUS redefines what sustainability can look like not just environmentally, but economically and socially. It proves that innovation doesn’t need to invent new resources it can start by using what we already have, more intelligently.
Challenges and the Road Ahead
One of the biggest hurdles is efficiency. Although AuREUS performs more consistently in low-light conditions than traditional solar panels, its energy conversion rate is still lower. Conventional silicon-based panels average 15% to 22% efficiency. AuREUS panels, while innovative, currently fall short of that range. Ongoing research is focused on improving how effectively the organic particles convert UV light into visible light and how efficiently that light is captured by the photovoltaic cells.
Material sourcing is another constraint. About 80% of the luminescent dyes used in current AuREUS panels are derived from biodegradable, locally available fruits and vegetables. However, one key component a blue-emitting dye still relies on synthetic materials. Researchers are actively working to replace this with a fully natural alternative to close the sustainability loop and move closer to fully biodegradable panels.
Durability is also being tested. Organic compounds can break down over time, especially when exposed to environmental stress like heat, moisture, and pollutants. For AuREUS to be viable in construction or long-term infrastructure, it must meet the lifespan standards of traditional solar panels, which typically last 25 years or more. Work is ongoing to improve the protective resin layers that shield the panels without reducing their performance.
Finally, production remains small-scale. Right now, only about 30 panels are produced per month a rate far below what’s needed for commercial deployment. Scaling up will require investment in manufacturing facilities, streamlined supply chains, and industry partnerships. Public support and government policy could also play a role in helping this technology reach more communities.
Despite these challenges, momentum is growing. International recognition, including the James Dyson Sustainability Award, has brought visibility and potential funding. The first public installation of AuREUS is already being planned for a community clinic in the Philippines, marking the transition from lab innovation to real-world application.
How This Innovation Connects to Everyday Life
AuREUS isn’t just a lab success or an academic prototype it’s a technology designed to blend into how people actually live, work, and move. Its flexibility and low-light functionality allow it to be used in ways traditional solar panels can’t. Here’s how it fits into everyday life, across different settings:
1. In Homes and Apartments: Power From Windows and Walls
Unlike standard solar panels that need rooftops and direct sunlight, AuREUS panels can be integrated into windows and vertical surfaces. That makes them a practical solution for apartment dwellers, renters, and people living in high-rise buildings groups often left out of solar energy solutions. A glass window equipped with AuREUS becomes a source of power without altering the structure or design of a home.
2. In Cities: Turning Urban Space Into Energy Sources
Urban areas are filled with glass buildings, covered walkways, and unused wall space. AuREUS turns those overlooked surfaces into clean energy assets. A city could line its bus stops, glass facades, or covered public areas with panels that generate electricity throughout the day even in overcast or shaded conditions. This is especially relevant for regions with limited grid stability or high energy demand during peak hours.
3. In Agriculture: Helping Farmers Reduce Waste and Increase Value
The food waste that powers AuREUS often comes from spoiled or surplus crops produce that would otherwise be thrown out. This creates a potential secondary market for farmers who regularly lose income to post-harvest waste. By selling unusable crops for panel production, agricultural communities gain an additional revenue stream while contributing to sustainable energy development.
4. In Wearables and Transportation: A Future Beyond Buildings
Because the panels are lightweight and flexible, their use isn’t limited to structures. Future versions of AuREUS could be embedded into vehicles, clothing, or mobile charging stations. This opens the door to decentralized, portable solar power that works even when people are on the move. Imagine a backpack or jacket that charges your devices as you walk through the city not through sunlight, but ambient UV light.
5. For Schools, Clinics, and Off-Grid Communities
One of the first planned real-world deployments of AuREUS is in a community clinic in Quezon, Philippines. This highlights the technology’s potential for improving energy access in underserved areas. Schools, health centers, and remote communities often struggle with inconsistent electricity. Panels that don’t need full sunlight—and that repurpose local waste offer a practical, low-cost solution for keeping lights on and essential services running.
By integrating into existing structures and addressing real-life energy gaps, AuREUS makes clean energy more inclusive. It works in places that conventional solar overlooks, and its benefits extend from individual households to entire cities.
Rethinking What We Waste
The most powerful part of AuREUS isn’t just its ability to turn food scraps into electricity it’s how it forces us to see things differently. For too long, waste has been treated as a burden and energy as something only accessible under perfect conditions. Carvey Ehren Maigue’s invention challenges both ideas with a simple, grounded truth: we already have what we need we just haven’t been using it wisely.
By extracting value from what we discard, AuREUS pushes forward a more circular, regenerative model for sustainability. It’s not just about capturing more energy it’s about doing more with what’s already around us. That’s a mindset shift as much as it is a technical one.
As cities grow, climates shift, and resources tighten, solutions like AuREUS remind us that real innovation often comes not from building more, but from using smarter. If banana peels and spoiled vegetables can power homes, what else have we been underestimating?
The future of renewable energy isn’t just in sun-drenched deserts or high-tech labs. Sometimes, it starts with a window, a cloudy sky, and the courage to look at waste as possibility.
