Stack Carbon has finalized a landmark multi-year carbon dioxide removal (CDR) offtake agreement with Wild Assets. The deal secures the future delivery of tens of thousands of tonnes of durable carbon removals from Stack Carbon’s flagship Enhanced Rock Weathering (ERW) initiative in Uganda..
As the largest ERW offtake agreement signed in Africa to date, the partnership represents a major commercial milestone for Stack Carbon and signals growing institutional confidence in Africa's emerging high-integrity carbon removal market.
Building Durable Carbon Removal in Africa
Stack Carbon develops scalable, high-integrity carbon removal solutions tailored to African agricultural landscapes. Our mission centers on deploying technologies that deliver verified atmospheric carbon removal while creating tangible, localized value for host communities.
Our Enhanced Rock Weathering pathway accelerates natural geological carbon sequestration. By applying finely crushed silicate rock to active agricultural soils, atmospheric CO2 reacts with dissolving minerals to permanently trap carbon in bicarbonate form.
Beyond carbon removal, soil application offers critical co-benefits for smallholder farmers:
- Soil Health Regeneration: Neutralizes soil acidity and replenishes vital micronutrients.
- Agricultural Yield Support: Enhances soil structure and nutrient retention.
- Climate Resilience: Improves crop vitality in regions increasingly vulnerable to climate volatility.
The project is registered under the Rainbow Standard’s ERW Methodology, establishing a transparent and rigorous framework for monitoring, reporting, and verification (MRV).
A Major Milestone for African CDR Landscape
Long-term offtake agreements provide the foundation for scaling the carbon removal ecosystem. They grant developers the revenue certainty needed to expand operations while guaranteeing buyers access to high-quality, durable credits.
For Wild Assets, this transaction marks its largest global ERW commitment to date and its initial asset entry into Africa.
"This is our largest ERW offtake to date, and our first asset in Africa. Our trust in Stack Carbon originates from the demonstrated conduct of the team—in the field, in the lab, and throughout the commercial process—as well as the thoughtful fit of the project to the region’s geography."
Matan Rudis, Partner and Co-founder at Wild Assets
Central to Stack Carbon’s operational philosophy is the alignment of global climate demand with local economic development. Carbon removal projects in emerging economies must deliver direct benefits to the landscapes and communities hosting them.
By integrating rock application into existing farming workflows, Stack Carbon ensures that the financial and environmental value generated by the net-zero transition directly supports rural livelihoods and soil restoration.
Scaling Future Ambitions
The Wild Assets agreement provides momentum toward a much broader target:
- 1,000,000+ Tonnes: Total durable CDR targeted for delivery by 2035.
- 250,000 Hectares: Agricultural land targeted for regeneration across Uganda and Madagascar.
- Local Infrastructure: Long-term investment in regional sampling labs, MRV logistics, and supply chain capacity.
Africa possesses the geological assets, agricultural scale, and entrepreneurial capability to lead the next generation of durable carbon removal. Stack Carbon is building that infrastructure from the ground up.