Circle Carbon Brazil
The Brazil Project is Circle Carbon’s first industrial-scale biochar initiative and represents the company’s strategic pivot from its earlier demonstration facility in Mallorca to high-impact project development in the Global South. Located in Brazil and supported by local co-founders and partnerships, the project involves the phased construction and operation of an industrial scale pyrolysis plant designed to produce 20,000 tons of premium biochar per year at full capacity.
Project plant 3D renderings by Thomas Jakob Hoffmann from DeCarbo Engineering, our project engineering partner (www.DeCarbo-Engineering.com)
Using proprietary Natural Path Technology and advanced pyrolysis reactors, the facility converts biomass feedstock — sourced from local sawmill businesses — into high-quality premium biochar, a stable form of carbon that remains in the soil for hundreds to thousands of years. Recognised by the IPCC as a Negative Emissions Technology (NET), biochar is then blended with compost to create proprietary soil substrates such as "Terralum" and biochar-based bio-fertilizers which regenerate impoverished agricultural soils, enhance crop yields, improve water efficiency, and reduce nitrous oxide emissions by up to 70%.
Beyond soil regeneration, the project generates multiple revenue streams: sales of pure biochar and biofertilizers, byproducts like wood vinegar and bio-oils, and Carbon Dioxide Removal (CDR) credits equivalent to approximately 50,000 tons of CO₂ per year.
Total project cost is approximately €5 million, covering capex, contingency, and working capital. The project follows a phased, de-risked execution model: development phase (currently underway, with site secured, stakeholders engaged, and technology procurement advanced), followed by construction phase. Financial close is anticipated within six months of receiving remaining development funding. The project also contributes to 16 of the 17 UN Sustainable Development Goals and is structured as a replicable model for future Circle Carbon plants in Brazil and beyond. In May 2026 there are four more projects in the pipeline.
Circle Carbon Mallorca
Circle Carbon Labs was a pioneering research and educational social enterprise founded in Mallorca, Spain in 2018. The company developed a carbon-negative business model that converted organic waste like garden cuttings and agricultural biomass into biochar-rich soil amendment substrates. These proprietary soil mixes proved to increase soil fertility and water retention as well as enhancing crop yields while permanently removing CO2 from the atmosphere.
It was a business focused on climate change mitigation through biochar production, soil regeneration and circular economy practices, combining environmental restoration with practical food security solutions.
The project was located on a 31,000 m2 agro-industrial property site in the outskirts of Palma de Mallorca and functioned as a fully operational demonstration centre showcasing a virtuous circular economy at work:
- Biochar production consisting of large compost and biomass facilities
- Vegetable cultivation in a 7,500 m2 greenhouse with 3 staff working this area daily alone
- Circle Carbon Café – a social meeting space that hosted visitors, educational tours, sustainable tourism activities as well as serving as a hub for local community engagement
- Circle Carbon Labs – experimentation site in the greenhouse that was growing seedlings as well as producing fertiliser teas and microorganism ‘soil kombuchas’
The project aimed to educate the public on the degraded state of soils in the Mediterranean by providing practical solutions on how to increase soil health while simultaneously creating local food systems, green jobs, and measurable carbon sequestration.
Circle Carbon Labs was our first demonstration site which converted 200 tons of biomass pa into Biochar and remained operational until the planned closure in 2023.