Biochar is one of the few carbon-removal methods that is durable, measurable and scalable today — and India, with its vast agricultural-residue base, is one of the best places on earth to produce it. This guide explains how biochar carbon credits work and what it takes to develop a high-integrity project.
What is a biochar carbon credit?
A biochar carbon credit represents one tonne of CO₂ permanently removed from the atmosphere and stored as stable carbon in biochar. Biochar is produced by pyrolysis — heating biomass in a low-oxygen environment — which converts roughly half of the biomass carbon into a form that resists decomposition for centuries.
Because the carbon would otherwise return to the atmosphere as the biomass decomposed or was burned, locking it into biochar and applying it to soil (or into durable materials) constitutes genuine carbon dioxide removal (CDR).
Why India is uniquely placed
- Feedstock abundance. India generates well over 500 million tonnes of crop residue every year. A large share is burned in the open, contributing to severe seasonal air pollution.
- A pollution problem that becomes an asset. Converting residue into biochar avoids open burning while producing durable removals.
- Cost advantage. Lower conversion and labour costs make Indian biochar among the most competitive durable CDR globally.
- Co-benefits. Biochar improves soil water-holding and health, supporting farmer incomes and resilience.
The methodologies that issue credits
Credible biochar credits are issued under established methodologies:
| Standard | Methodology | Notes |
|---|---|---|
| Verra | VM0044 | Biochar use in soil and non-soil applications |
| Puro.earth | Biochar Methodology | Issues CORCs; widely used for durable removal |
| Isometric | Biochar Protocol | Science-led, high transparency |
| Gold Standard | Soil & removals | Strong co-benefit framing |
Choosing the right methodology depends on your feedstock, end-use, geography and the buyers you intend to serve.
From residue to credits: the project journey
- Feasibility. Confirm feedstock volumes, logistics, technology fit and carbon economics.
- Design. Select methodology and registry; set biochar quality and MRV targets.
- Validate & verify. Author the project design document, engage a validation/verification body, and list on the registry.
- Monetise. Structure offtakes and connect with credible buyers.
What determines credit quality
- Permanence, assessed via the H:Corg ratio (hydrogen-to-organic-carbon) — lower ratios mean more durable carbon.
- Additionality — the project must not have happened anyway.
- Conservative MRV — defensible sampling, lab data and quantification.
Get these right and your credits will survive buyer due diligence — and command a premium.
Where to start
If you have biomass and want to know whether it can become durable carbon-removal credits, the fastest path is a feasibility assessment. It gives you an evidence-based go / no-go before you invest.