Producing biochar from waste biomass in Wales for carbon removal

Biochar production from waste biomass in Wales is advancing carbon sequestration efforts. Through pyrolysis, waste timber from commercial forests is converted into biochar, a stable, carbon-rich material. This process prevents carbon and methane emissions that occur during natural decomposition, offering a more permanent carbon storage solution. Additionally, biochar can enhance soil fertility and productivity when mixed into the soil.

In August and September 2025, Carbon Hill completed the second phase of site upgrades, enhancing biomass feedstock processing with a new turnkey preparation line and bulk biochar storage system. These improvements increased production rates to 2.5–3.0 tonnes of biochar per day and initiated the production of EBC Feed Grade biochar, broadening the site's certified product range.

The first phase of upgrades saw the transition from the research unit 'Betty' to the customer-ready C1000 system, named 'Diana, the Biochar Princess of Wales.' This new plant operates at an average of 1.8 tonnes per day, producing EBC Agro-grade biochar for agricultural use. Concurrently, Carbon Hill's regenerative farming trials demonstrated biochar's potential to improve soil health and crop yields, with plans to expand hemp production in 2026.

A Gold Soil Test conducted in March 2025 revealed significant soil health improvements since 2021, including increased organic carbon and nutrient levels. These results underscore biochar's role in enhancing soil quality and productivity. Carbon Hill's biochar production diverts waste biomass from decomposition or burning, reducing harmful emissions and contributing to climate change mitigation.

The project aligns with Sustainable Development Goal 13 by reducing emissions through sustainable biochar production. Puro.earth certifies the project's carbon removal efforts under its Puro Standard.