Onnu and ReGenEarth have announced plans to construct a landmark pyrolysis project that will produce biochar and renewable heat while generating high-quality carbon removal credits.
The project, envisioned to operate as a pioneering, fully circular, integrated anaerobic digestion (AD) and pyrolysis facility, will be located at ReGenEarth’s Sedgefield site, at an operational dairy farm called Hope.
At this location, the novel pyrolysis project will convert agricultural waste into biochar and renewable heat using Onnu’s proprietary CarboFlow technology.
The site is projected to operate in a fully circular process, where agricultural residue gets fed into an anaerobic digester, and the resulting digestate byproduct is dried with the renewable heat from the pyrolysis process to be converted into a biochar product that sequesters CO2 and provides soil benefits.
This process is restarted again when agricultural waste from the crop harvest is used to fuel another anaerobic digestion, creating a circular operating mode.
Onnu will deploy two of its CarboFlow units alongside the existing anaerobic digestion infrastructure at Sedgefield, aiming to reach an annual carbon removal capacity of 4,300 tonnes of CO₂e, coupled with the production of 2,266 tonnes of biochar and 2.8 MW of recoverable thermal energy each year.
The Sedgefield pyrolysis project forms part of ReGenEarth’s ~$133 million (£100 million) Green Bond program with RER Capital, created to enable the rollout of integrated AD-pyrolysis sites across the UK, along with feedstock origin tracking and pathways for high-integrity carbon credit generation.
Relevant: Onnu Unveils A Proprietary Pyrolysis Tech, Embarking On First Deployment In Malaysia
This project is intended to serve as the blueprint for future integrated AD-thermal conversion deployments, both in the UK and internationally.
For Onnu, the partnership with ReGenEarth comes soon after the company announced the first commercial deployment of its CarboFlow proprietary systems, powered by a partnership with Agrotech Bioenergy in Southeast Asia.
Under this partnership, two CarboFlow units were installed at plantations on the island of Borneo to process approximately 41,820 tonnes of wet biomass annually, producing 1,924 tonnes of biochar and 2,800 kW of renewable heat, expected to generate 3,937 carbon credits per year.
Read more: UK To Open Largest Biochar Carbon Removal Plant In Wiltshire
