Carboneyes: Udongo

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Bagasse is the fibrous residue remaining after sugarcane is crushed for sugar production. A single mill can generate hundreds of thousands of tonnes per year. A portion is used for on-site cogeneration and briquetting, but even at full capacity a significant surplus remains. This surplus is disposed of in open heaps where it decomposes under partially anaerobic conditions, releasing CO₂ and methane, and producing acidic leachate that can contaminate surrounding soils and waterways. Project Udongo converts the surplus bagasse into biochar through pyrolysis at a facility co-located on the mill site. The biochar is donated free of charge to smallholder sugarcane farmers, alongside training, to deliver durable carbon removal whilst improving soil health, reducing fertiliser dependence and building climate resilience in local communities.

How carbon is being removed

Biomass Carbon Removal and Storage (BiCRS) involves storing the carbon contained in waste biomass—organic material from living or recently living organisms. BiCRS works by halting or slowing the decomposition of biomass, enabling the carbon it contains to be stored long-term. This can be achieved by converting biomass into materials that decompose more slowly—such as biochar or bio-oil—or by storing it in environments where decomposition is slowed. For BiCRS to count as carbon removal, the biomass must be replenished to ensure additional carbon dioxide is drawn from the atmosphere.

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Project timeline

Expected 2026

In progressInitial documentation submission

The project submits documentation to the Isometric registry, forming the basis for project validation. This includes the Project Design Document (PDD) that describes the project in accordance with the Isometric Standard and any other necessary supporting evidence.

Expected 2026

Audit kick-off

Expected 2026

Site visit

Expected 2026

Approval date

Expected 2026

Initial credit issuance

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Carboneyes
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Project details

Protocol details

Summary

Credits

Protocol details

Summary

How carbon is being removed

Project timeline

Project documentation