Biochar projects are attractive because they sit at the intersection of waste management, carbon removal and potentially premium pricing. But the credit only exists if the full chain holds up: feedstock quality, process control, permanence, methodology fit and verification confidence.
If you already have indicative feedstock and yield assumptions, the biochar carbon calculator is a useful companion to this guide. It allows you to turn the concepts below into an indicative tCO₂e range using your own project assumptions.
The core logic
A biochar credit begins with biomass. That biomass is processed through pyrolysis into a stable carbon-rich material. The model then estimates how much carbon remains stored over time, deducts process emissions and any permanence discount, and converts the net result into tCO₂e.
In most cases, the next questions are durability and methodology fit. Our guides to biochar permanence and biochar methodology choice explain how those issues affect credit quality and commercial positioning.
What matters most
- Feedstock moisture and composition
- Biochar yield and fixed carbon content
- H/Corg ratio and permanence class
- Whether the project is better suited to Puro-style removal markets or another route
Use the full tool in The Carbon Workbench for saved calculations, PDF reports, and a quicker route into the wider biochar screening toolkit.
Use full tool in The Carbon Workbench →Why the market cares
Buyers usually pay up for biochar when permanence is well evidenced, process quality is high and the methodology route is credible. Weak documentation or poor-quality process assumptions can reduce confidence quickly.