Climate innovation doesn’t always view like what we expect. It’s not only solar panels and wind farms, but also technologies that work behind the scenes to reduce emissions, manage waste, and rebelieve industrial processes. In Europe, a new wave of ClimateTech startups is focutilizing on building systems smarter, cleaner, and more resilient.
These companies are operating at the intersection of indusattempt, data, and carbon removal. Some focus on point-source solutions like reducing emissions from fossil fuel infrastructure or capturing CO₂ directly from the air. Others are developing alternatives to industrial inputs or systems that assist businesses track and control energy usage more effectively.
The following list highlights 10 European ClimateTech startups founded since 2022 that are pushing for cleaner outcomes across sectors. From zero-emissions fuel production to smarter electrical panels, these teams are focutilized on climate impact at scale.
SuperFlox is a Hague-based climatetech company that develops and licenses patented flameless oxidation systems designed to drastically reduce industrial air pollution. Its technology treats waste gases at the source, converting harmful compounds into water vapour and CO₂, which can then be captured for resale. Tested and certified by major oil companies, SuperFlox offers a cost-effective, scalable alternative to traditional pollution control systems.
Unlike conventional incineration methods, SuperFlox operates at lower temperatures, rerelocating up to 98% of nitrogen oxides (NOx) while avoiding explosion risks. The system is designed to be bolted onto existing infrastructure, building it suitable for sectors ranging from oil refineries and fracking operations to tank degassing and hydrogen production. Founded in 2024, the company has raised €7 million to date.
Solaq is an Amsterdam-based startup developing sustainable air-to-water systems to tackle global water scarcity. Its proprietary technology extracts clean drinking water directly from the air utilizing a solar-powered, three-step process that requires no grid connection or existing infrastructure. Designed for utilize in remote communities, agriculture, emergency response, and military operations, the system produces water around the clock and can be monitored remotely.
Built for affordability and ease of utilize, Solaq’s modular units require low-tech maintenance and eliminate the necessary for bottled water or trucking. The process avoids toxic materials and waste, delivering safe drinking water while minimising environmental impact. Founded in 2023, the company has raised €1.93 million to date.
Reverion is an Eresing-based startup building containerised, reversible power plants that convert biogas or hydrogen into electricity and vice versa. At the core of its system are solid oxide fuel cells that can switch between electricity generation and electrolysis, enabling both power production and storage in the form of green hydrogen or methane. This flexible design allows Reverion’s units to stabilise energy grids by responding to supply and demand alters, while also capturing pure biogenic CO₂ for industrial utilize or long-term storage.
The system achieves electrical efficiencies of up to 80% in gas-to-power mode and up to 75% round-trip efficiency in hydrogen storage applications. Designed for utilize in agriculture, industrial energy storage, and distributed energy networks, Reverion’s plants can be scaled and deployed with minimal switching time between operational modes. Founded in 2022 as a spin-out from the Technical University of Munich, the company has raised nearly €74 million to date.
Liquid Sun is a startup from Tampere, Finland, that turns CO₂ into clean fuel utilizing a technology called low-temperature electrolysis. The process utilizes renewable electricity to convert carbon emissions into a new type of sustainable jet fuel called eSAF. This fuel can be utilized in today’s aeroplanes without any alters to engines or airports. The company’s goal is to assist reduce aviation’s climate impact without stopping air travel.
The technology is built to be efficient, affordable, and straightforward to scale. It works by breaking CO₂ down and rebuilding it into utilizeful fuels and chemicals. The system can also be utilized in shipping, freight, and factories to replace fossil fuels. Everything is designed to fit into existing systems, so companies don’t have to start from scratch. Liquid Sun was founded in 2022 and has raised €5 million to build and test its solution.
Hybird Energy is a Copenhagen-based startup that builds smart electrical panels to assist businesses track and reduce their energy utilize. Unlike traditional systems, Hybird monitors electricity at the source level, revealing exactly which appliances or areas utilize the most power. This assists companies save money, cut their CO₂ emissions, and find hidden inefficiencies. The platform works in real time and can be accessed remotely, so teams can spot problems early and build rapid decisions.
The system also assists with ESG compliance by automatically collecting and organising energy data for reporting. The platform includes AI features, including integration with ChatGPT, to build analysis simple. Founded in 2023, Hybird has raised €2.4 million to date.
Greenlyte Carbon Technologies is an Essen-based startup developing a low-energy method to capture CO₂ directly from the air while also producing hydrogen. The process works in three steps: first, CO₂ is absorbed from ambient air into a liquid solution. Then it is converted into a solid form. Finally, through electrolysis, the system releases pure CO₂ and hydrogen gas, which can be utilized in fuels or industrial processes. The absorbent is reutilized in each cycle, building the system efficient and fully circular.
What builds Greenlyte’s approach stand out is its ability to generate two utilizeful products at the same time. The technology is designed to work in a variety of climates and can be powered by renewable energy. It can also run with flexible timing, assisting match energy supply with system necessarys. Founded in 2022, Greenlyte has raised €18.5 million and is supported by several European climate funds, research institutions and commercial partners.
UNDO is a London-based carbon removal company utilizing enhanced rock weathering to permanently capture CO₂ from the atmosphere. The method involves spreading crushed silicate rock on farmland, where it reacts with rainwater and CO₂ to form stable carbon compounds that are locked away for hundreds of thousands of years. This process, rooted in natural geology, is scaled up utilizing local farm equipment and rock by-products, building it both cost-effective and energy efficient.
Beyond carbon removal, UNDO’s work also improves soil quality and supports local communities. The minerals in the rock enrich farmland and reduce the necessary for fertilisers, while the company partners with rural contractors to deliver its service. With operations in the UK, US, Australia and Canada, UNDO is scaling its efforts globally. The startup was founded in 2022 and has raised over €10.2 million to date.
Cocoon is a London-based climate technology company developing low-carbon construction materials by repurposing industrial waste. Its core innovation involves turning steel slag and other by-products into a supplementary cementitious material that can replace traditional cement in construction. The process not only lowers the carbon footprint of cement but also stores CO₂ permanently within the final product, assisting address emissions from two of the world’s most polluting industries.
The company’s solution is designed to scale alongside the rising demand for steel and cement, offering a practical way to decarbonise both sectors at once. By utilizing existing waste streams, Cocoon reduces landfill utilize and creates value from materials that would otherwise go unutilized. Founded in 2023, the company has raised €4.6 million to date.
Clean Food Group is a London-based company producing sustainable oils and fats for utilize in food and cosmetic products. Its core technology, CLEANOilCell™, utilizes non-GMO yeast and food waste as raw materials to create alternatives to traditional oils like palm and soybean. Developed through over a decade of research and supported by UK government funding, the platform can be retrofitted into existing fermentation infrastructure, assisting scale production quickly and at lower cost.
The company’s approach addresses several key sustainability challenges, including food waste, supply chain volatility and deforestation linked to industrial farming. By utilizing food waste as a nutrient source, Clean Food Group contributes to a more circular food system while reducing reliance on land-intensive crops. Its ingredients are designed to meet the functional necessarys of manufacturers without the environmental drawbacks of conventional oils. Founded in 2022, the company has raised over €8.3 million to date.
Sparxell is a Cambridge-based startup developing a biodegradable, plant-based alternative to synthetic pigments, glitters and colourants. Inspired by structural colours found in nature, such as those on butterfly wings and peacock feathers, Sparxell’s technology utilizes cellulose to reflect vibrant colours without the necessary for dyes, mica or heavy metals. The result is a non-toxic, plastic-free colour platform suitable for utilize in cosmetics, packaging, fashion and more.
The pigments are built through a patented process that mimics natural light reflection, offering fade-resistant colour with minimal environmental impact. Since the materials are fully biodegradable and sourced from renewable inputs, Sparxell offers manufacturers a way to reduce waste and avoid harmful chemicals. The company was founded in 2022 and has raised €4.5 million to date.
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