Introduction
When we talk about climate solutions, the focus often stops at carbon dioxide. But the environmental impact of waste goes far beyond CO2 – especially when it ends up in landfills, releasing methane, a gas far more potent in the short term. A solution exists that prevents these emissions while generating clean energy in the process. That’s the potential of converting waste into hydrogen. This approach shifts the perspective on waste, treating it as a resource that contributes to cleaner air, healthier ecosystems, and a more circular economy.
In Europe, recycling and landfilling remain the dominant waste treatment methods, while waste-to-energy solutions are still emerging. In this blog, we’ll compare these approaches and explore why converting waste into hydrogen could be the most promising path forward – for both the environment and the energy transition.
Reduction in Greenhouse Gas Emissions
One of the most compelling environmental benefits of converting waste into hydrogen is its significant potential to reduce greenhouse gas emissions. Compared to landfilling, it drastically reduces greenhouse gas emissions—especially methane, which is released by decomposing organic waste and is around 25 times more harmful to the climate than CO2.[1] Additionally, unlike incineration, which emits CO₂ through combustion, processes like pyrolysis and gasification operate in low-oxygen environments, resulting in lower direct emissions. In some advanced systems, especially when paired with carbon capture, waste-to-hydrogen can even achieve net-negative emissions, actively removing carbon from the atmosphere while producing clean energy.
Waste Diversion from Landfills
Waste treatment in the EU is becoming increasingly green. Still, landfilling remains a major issue: while 40.8% of waste is recycled, 30.2% is still landfilled, and only 6.4% goes to energy recovery. [2] The recycling boom is driven not only by sustainability goals but also by the simple fact that Europe is running out of space for landfills.
And when recycling is no longer an option – when the materials can’t be recycled – waste-to-energy solutions are the best way to keep the process greener.
Circular Economy Support
While waste-to-energy may seem like a circular economy solution at first glance, its benefits are limited—energy is recovered, but the materials themselves are destroyed. In contrast, waste-to-hydrogen offers a more genuinely circular approach by transforming non-recyclable waste into a valuable, clean fuel. This not only extends the life cycle of materials but also contributes to sustainable energy production. Recycling remains a strong pillar of the circular economy, but it’s only effective for materials that can be reused. For the vast amount of waste that falls outside that category, waste-to-hydrogen provides an ideal solution, giving otherwise unusable products a second life in the form of clean energy.
Renewable Energy – less fossil fuel
Beyond simply managing waste, the hydrogen produced through this process can play a transformative role in the broader energy transition. As a clean, versatile fuel, it has the potential to replace fossil fuels in carbon-intensive sectors like transportation, heavy industry, and power generation—areas where electrification is often difficult or inefficient. By doing so, waste-to-hydrogen not only prevents emissions from waste itself but also helps eliminate future emissions that would otherwise come from burning coal, oil, or natural gas.
Cleaner Air
Beyond reducing greenhouse gases, converting waste into hydrogen also contributes to significantly cleaner air. Traditional landfilling and incineration release a range of harmful pollutants, including particulate matter (PM2.5), nitrogen oxides (NOₓ), and volatile organic compounds (VOCs)—all of which are linked to respiratory and cardiovascular diseases. In fact, 2025 systematic review and meta-analysis published in BMC Public Health found a slight but consistent increase in respiratory diseases, including asthma and COPD, among populations living near municipal solid waste incinerators. [3]
In contrast, waste-to-hydrogen technologies like pyrolysis and gasification operate in controlled, low-emission environments. These processes minimize the release of airborne toxins, and when paired with modern filtration systems, they can reduce pollutant output to near-zero levels. This makes them not only a cleaner alternative to incineration but also a healthier one for surrounding communities.
Conclusion
As Europe continues to push for greener waste management, it’s clear that converting waste into hydrogen offers far more than just a climate benefit. It reduces harmful emissions, supports the circular economy, diverts waste from landfills, and produces a clean fuel that can power the future. While recycling and traditional waste-to-energy methods still play important roles, hydrogen stands out as a transformative solution – one that turns our waste problem into a clean energy opportunity.
The project is Co-founded by Clean Hydrogen Partnership and European Commission.
References
[1] Turning waste into hydrogen: a new path towards emissions reduction | Global Hydrogen Review
[2] Waste statistics – Statistics Explained – Eurostat
[3] Residential exposure to municipal solid waste incinerators and health effects: a systematic review with meta-analysis | BMC Public Health | Full Text
Writer: Sofiia Savchenko
Editorial: Lucía Salinas
July, 2025