The voluntary carbon market is not complicated. But most of the people writing about it are writing for investors and climate funds, not for the palm oil mill manager in Ogun State or the cashew processor in Cote d'Ivoire trying to understand whether any of this is relevant to their operation.
This post is for that person. Here is the process, the timeline, and the real numbers — without the jargon.
What a carbon credit actually is
A carbon credit represents one tonne of CO2 that has been removed from the atmosphere and stored somewhere permanently. Companies that emit CO2 — airlines, technology firms, manufacturers — buy these credits to offset their emissions as part of their 2030 climate commitments.
The demand is not speculative. Microsoft is targeting carbon negativity by 2030. Google spent over $100 million on carbon credits in 2024. British Airways has committed to becoming the largest purchaser of carbon removals in the UK. Spotify, Salesforce, Klarna, and Milkywire are all active buyers. These companies need credits, and they are willing to pay for high-quality ones.
Biochar from agricultural waste is one of the highest-rated removal methods on the market because the carbon storage is permanent — once locked into biochar and applied to soil, it stays there for hundreds of years. That permanence is what makes it worth more per tonne than most other carbon removal approaches.
The two certification standards that matter
Two standards currently dominate biochar carbon credit certification.
The first is the European Biochar Certificate, known as EBC. It sets quality standards for the biochar itself — carbon content, contamination levels, stability. To receive EBC certification, samples of the produced biochar are sent to an accredited third-party laboratory for independent analysis.
The second is Puro.earth, which operates a carbon credit registry and marketplace. Puro verifies that the biochar meets removal standards and issues credits on its registry, which buyers can then purchase. Other registries exist, but Puro.earth has the most established track record for biochar specifically.
Both standards require MRV — Monitoring, Reporting, and Verification. This is the ongoing process by which an independent auditor confirms how much biochar was produced, what its carbon content is, and that it was properly applied to soil. MRV is not a one-time event. It happens continuously throughout the project.
The timeline from production to first payment
From the moment a pyrolyzer is installed at a factory to the first carbon credit issuance, the realistic timeline is 6 to 9 months. That includes initial production runs, feedstock stabilisation, lab sample submission, third-party audit, registry submission, and credit issuance.
This is not a fast process. Any operator who tells you credits will be issued in 60 days is either wrong or referring to a pre-registered project. Plan for 9 months to be safe and treat early revenue projections accordingly.
After the first issuance, subsequent batches move faster because the project is already registered and the production process is verified.
What it actually pays — with real numbers
Credits currently sell at $140 to $200 per tonne of CO2 equivalent removed. The price has been rising as 2030 corporate deadlines approach and supply remains constrained.
A cashew processor with 5,000 tonnes of shell per year at 0% upfront can expect approximately $70,000 in annual revenue at a 20% revenue share. At 50% upfront investment, that same processor earns closer to $192,000 per year.
A palm oil mill with 60,000 tonnes of PKS per year is looking at potential revenue around $500,000 annually from carbon credits alone, on top of soil amendment sales.
A timber processor with 32,000 tonnes of sawdust per year could generate around $500,000 in additional annual revenue at no upfront cost.
These numbers depend on feedstock quality, consistency of supply, and the revenue share structure agreed at the start of the partnership. They are modelled outputs based on standard feedstock parameters and current market pricing — not guarantees.
Why African processors are underrepresented — and why that is changing
Africa generates over one billion tonnes of agricultural waste per year. It has among the highest concentrations of palm, cashew, and timber processing in the world. Yet African producers represent a fraction of the biochar carbon credits currently issued on international markets.
The reason is not that the feedstocks are inferior — they are among the best in the world. The reason is that certification infrastructure, technical operators, and buyer relationships have historically been concentrated in Europe and North America.
That is now changing. Nigeria's first industrial biochar plant began operations in Cross River State in December 2024 and issued its first carbon credits by May 2025. The infrastructure exists. The buyers are ready. What the market needs is more African processors willing to activate their waste streams.
Early movers in this market build verified production track records that late entrants cannot replicate quickly. A processor with two years of certified biochar production has a fundamentally different conversation with a buyer than one that is just starting.