STACK CARBON

Throughout 2025, Stack Carbon evolved from an ambitious proof-of-concept into a tangible force in the African carbon removal landscape through the successful launch of the  𝗞𝗮𝗿𝗶𝗯𝘂 𝗖𝗮𝗿𝗯𝗼𝗻 𝗣𝗿𝗼𝗷𝗲𝗰𝘁. We prioritized institutional integrity by initiating pre-validation and registry onboarding for the  𝗞𝗮𝗿𝗶𝗯𝘂 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 under the Rainbow standard, ensuring our high-integrity removals are verified to meet the most rigorous global standards. This scientific foundation is supported by massive operational security, including long-term access to over 100,000 tonnes of basalt annually to fuel our deployment. We also advanced the 𝗡𝗶𝗹𝗲 𝗖𝗵𝗮𝗿 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 by securing sustainable feedstock and establishing key technology partnerships, laying a robust foundation for biochar deployment that will complement our broader removal efforts in the years to come. Our integration into the global marketplace reached a turning point when we were onboarded as a supplier on the CEEZER platform, a partnership that serves as a high-transparency bridge directly linking our African-based removals with corporate buyers. Additionally, our inclusion in the inaugural cohort of the  𝗔𝗳𝗿𝗶𝗰𝗮𝗻 𝗖𝗮𝗿𝗯𝗼𝗻 𝗥𝗲𝗺𝗼𝘃𝗮𝗹 𝗔𝗰𝗰𝗲𝗹𝗲𝗿𝗮𝘁𝗼𝗿 (𝗔𝗖𝗥𝗔) led by remove in partnership with sus.lab | ETH, Nuvoni Centre for Innovation Research and other partners, provided the strategic guidance necessary to navigate complex market dynamics and policy landscapes as we scale. A vital part of our 2025 journey was our commitment to capacity building through our partnership with Practera. This collaboration allowed us to engage over 𝟮𝟬 𝘀𝘁𝘂𝗱𝗲𝗻𝘁 𝗶𝗻𝘁𝗲𝗿𝗻𝘀 from prestigious institutions like the University of Liverpool, University of Leeds, The London School of Economics and Political Science (LSE), Strathmore University and other institutions who contributed fresh research and strategic insights to our deployment models. Looking ahead to 2026, we are entering a phase of deep institutional maturity and massive operational expansion. Our focus is shifting toward establishing the digital and physical infrastructure needed to handle larger removal volumes while maintaining the human-centric approach that has brought over 2,000 smallholder farmers into our ecosystem. By maturing our project portfolio and finalizing our first credit issuances, we are proving that African soil is the primary engine for high-durability carbon sequestration. None of this would be possible without our dedicated partners, investors, and the vibrant communities we serve, and, most importantly, 𝗼𝘂𝗿 𝗶𝗻𝗰𝗿𝗲𝗱𝗶𝗯𝗹𝗲 𝘁𝗲𝗮𝗺, whose tireless work on the ground turns this vision into reality every day.

𝗦𝗲𝗮𝘀𝗼𝗻’𝘀 𝗚𝗿𝗲𝗲𝘁𝗶𝗻𝗴𝘀! As the year comes to an end, we’re reminded that progress is always driven by people. At STACK CARBON, climate science only matters when it works for communities on the ground. We’re deeply grateful to the partners, farmers, and local stakeholders who have walked with us this year, turning the promise of African-led carbon removal into real impact. As we pause to recharge and reflect, our focus remains steadfast: scaling high-integrity solutions that empower farmers, restore ecosystems, and create lasting environmental benefits. Your support and collaboration have been essential in making this vision a reality, and we look forward to continuing this journey together in the year ahead. 𝗪𝗮𝗿𝗺𝗲𝘀𝘁 𝗵𝗼𝗹𝗶𝗱𝗮𝘆 𝘄𝗶𝘀𝗵𝗲𝘀 𝗳𝗿𝗼𝗺 𝗼𝘂𝗿 𝘁𝗲𝗮𝗺 𝘁𝗼 𝘆𝗼𝘂𝗿𝘀, 𝘄𝗶𝘁𝗵 𝗵𝗼𝗽𝗲, 𝗴𝗿𝗮𝘁𝗶𝘁𝘂𝗱𝗲, 𝗮𝗻𝗱 𝘀𝗵𝗮𝗿𝗲𝗱 𝗰𝗼𝗺𝗺𝗶𝘁𝗺𝗲𝗻𝘁 𝗳𝗼𝗿 𝗮 𝘀𝘂𝘀𝘁𝗮𝗶𝗻𝗮𝗯𝗹𝗲 𝗳𝘂𝘁𝘂𝗿𝗲.

𝐀 𝐬𝐡𝐨𝐫𝐭 𝐠𝐥𝐢𝐦𝐩𝐬𝐞 𝐢𝐧𝐭𝐨 𝐨𝐮𝐫 𝐊𝐚𝐫𝐢𝐛𝐮 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐑𝐨𝐜𝐤 𝐖𝐞𝐚𝐭𝐡𝐞𝐫𝐢𝐧𝐠 (𝐄𝐑𝐖) 𝐣𝐨𝐮𝐫𝐧𝐞𝐲. This video captures simple but meaningful moments across our work, from engaging with local communities, to sourcing and preparing the rock, to field operations and spreading. Every step reflects the collaborative effort behind building a climate solution that is rooted in people, land, and shared progress. What started as a small idea has grown into an active project that is teaching us, guiding us, and showing what’s possible when science meets community. None of this would be happening without the trust of the farmers we work with, the support from our partners, and the commitment of everyone who believes in what we’re building. A special thank you to the entire STACK CARBON team for their hard work, passion, and resilience, and to all our collaborators who have walked with us on this journey so far. This is only the beginning — and we’re grateful for everyone helping us shape it.

We are delighted to announce the successful conclusion of our micro-internship program, delivered in partnership with King's College London and expertly facilitated by Practera. It was a privilege to work with a team of exceptional students whose performance was truly outstanding. The depth of their analysis and the quality of the final strategic framework were of the highest professional standard, providing clear, practical guidance that will directly inform and strengthen our ongoing strategic direction. A special congratulations to the entire team: Mallory Boyd, Abhimanyu Singh, Burcin Erkan, Vishwatej Raghuwanshi, and Shantanu Sahay. Your intellectual rigor, dedication, and professional excellence throughout this demanding project were truly exemplary. The strategic insights you provided are already proving invaluable, directly supporting our mission to scale high-integrity carbon removal. This initiative perfectly highlights the power of bridging academic excellence with industry innovation. Thank you to King's College London for fostering such remarkable talent, and to Practera for enabling a seamless and impactful collaboration. We have no doubt that these students are future leaders in their field, and we eagerly look forward to witnessing their continued success.

𝐅𝐢𝐞𝐥𝐝 𝐔𝐩𝐝𝐚𝐭𝐞: 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐑𝐨𝐜𝐤 𝐖𝐞𝐚𝐭𝐡𝐞𝐫𝐢𝐧𝐠 𝐈𝐧 𝐀𝐜𝐭𝐢𝐨𝐧 This side-by-side field comparison highlights the impact of basalt application on maize growth under real farming conditions. 𝐋𝐞𝐟𝐭: Soil treated with finely crushed basalt 𝐑𝐢𝐠𝐡𝐭: Untreated control plot Both plots share the same location, season, and management practices. The treated area is already demonstrating stronger, greener, and more uniform plant growth, reflecting improved soil chemistry and nutrient availability. These early observations are consistent with established scientific evidence indicating that Enhanced Rock Weathering can: • 𝗜𝗺𝗽𝗿𝗼𝘃𝗲 𝘀𝗼𝗶𝗹 𝗵𝗲𝗮𝗹𝘁𝗵 𝗮𝗻𝗱 𝗳𝗲𝗿𝘁𝗶𝗹𝗶𝘁𝘆 • 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 𝗶𝗻𝗰𝗿𝗲𝗮𝘀𝗲𝗱 𝗰𝗿𝗼𝗽 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝘃𝗶𝘁𝘆 • 𝗖𝗼𝗺𝗯𝗮𝘁 𝘀𝗼𝗶𝗹 𝗮𝗰𝗶𝗱𝗶𝘁𝘆 At STACK CARBON, we are committed to advancing science-based carbon removal solutions that deliver agricultural productivity, community benefit, and climate impact across Africa. This work reflects our core approach: climate action grounded in evidence, implemented with farmers, and aligned with long-term rural development objectives.

We were honoured to host the Stay Foundation and Latek Stay Alliance Uganda delegation at the Stack Carbon office this week. The meeting provided an opportunity to explore collaborative pathways for integrating 𝐜𝐚𝐫𝐛𝐨𝐧 𝐫𝐞𝐦𝐨𝐯𝐚𝐥 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬, particularly 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐑𝐨𝐜𝐤 𝐖𝐞𝐚𝐭𝐡𝐞𝐫𝐢𝐧𝐠 (𝐄𝐑𝐖), with sustainable agriculture to benefit smallholder farmers, restore ecosystems, and strengthen community resilience. This exchange reinforced the importance of aligning carbon removal with local development priorities to ensure meaningful benefits for both people and the environment. We look forward to building on these discussions to advance initiatives that support smallholder farmers, regenerate landscapes, and drive long-term impact across communities. #CarbonRemoval #SustainableAgriculture #CommunityResilience #ClimateAction #StackCarbon

After 6 months of working alongside 12 incredible startups from Sub-Saharan Africa, our first cohort of the African Carbon Removal Accelerator (ACRA) program is now complete and we couldn't be prouder of how far these teams have come. 🎉 We can’t wait to see the contributions these teams will make to continental climate action and the global carbon removal sector in the years to come. To our CDR community, keep your eyes on these folks! 🔹Tera → Producing high quality CDR credits through the production of biochar derived from waste sugar cane bagasse. 🔹Conservation Capital SA → Harnessing agroforestry with CO2-absorbing trees to restore degraded lands and uplifting rural communities. 🔹Tivano → Delivering large-scale carbon removal by transforming Namibia’s bush encroachment crisis into a climate solution through biomass burial. 🔹Kokari Coconuts & Company → Committing to CDR through sustainable agroforestry and biochar-based soil enhancement. 🔹STACK CARBON → Scaling ERW and biochar solutions to address the dual challenges of climate change and sustainable development in Africa. 🔹Releaf Earth (YC W19) → Producing premium biochar from palm kernel shells in West Africa. 🔹VERMIFAM LTD: Bugesera Worm Farm and Vermicomposting Production Initiative → Integrating carbon removal strategies into sustainable agriculture through a combination of vermicomposting, biochar production and agroforestry. 🔹Flux → Developing Enhanced Rock Weathering for Sub-Saharan Africa. 🔹BIOSORRA → Transforming carbon from crop waste into crop yield and clean energy while capturing CO2 using biochar. 🔹Safi Organics Ltd. → Scaling decentralized field-tested & locally adapted pyrolysis technologies to convert agricultural waste into biochar. 🔹RecyCoal → Leveraging biochar's dual benefits of effective CDR and significant agricultural improvement. 🔹Bio-Logical → Operating Africa’s largest industrial scale biochar production facility. 🥂 Thank you all for an incredible journey together. Congratulations on expanding CDR impact in Africa! ACRA is made possible by the generous funding of the Swiss Agency for Development and Cooperation and the Swiss National Science Foundation SNSF as a part of the SOR4D Solution-oriented Research for Development program, jointly developed by sus.lab | ETH, Max Planck Net Zero Lab, Strathmore University, Nuvoni Centre for Innovation Research and remove.

STACK CARBON is pleased to participate in the 𝗠𝗶𝗻𝗲𝗿𝗮𝗹 𝗪𝗲𝗮𝗹𝘁𝗵 𝗖𝗼𝗻𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝟮𝟬𝟮𝟱, taking place from 𝟮𝟰𝘁𝗵–𝟮𝟱𝘁𝗵 𝗦𝗲𝗽𝘁𝗲𝗺𝗯𝗲𝗿 at the Kampala Serena Hotel, Uganda. The conference, convened by the UGANDA CHAMBER OF ENERGY AND MINERALS in collaboration with the Ministry of Energy and Mineral Development (Uganda) serves as a strategic platform for dialogue on how Uganda’s mineral resources can be developed sustainably to deliver long-term economic transformation. It brings together government leaders, private sector actors, financial institutions, and development partners to deliberate on responsible resource management and value addition across the extractives sector. 𝗦𝘁𝗮𝗰𝗸 𝗖𝗮𝗿𝗯𝗼𝗻 will be represented by our CEO, BASHIR DAN, who will be engaging with stakeholders on how minerals can power not only industrial growth but also 𝗰𝗹𝗶𝗺𝗮𝘁𝗲 𝗶𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻. Through our work in 𝗘𝗻𝗵𝗮𝗻𝗰𝗲𝗱 𝗥𝗼𝗰𝗸 𝗪𝗲𝗮𝘁𝗵𝗲𝗿𝗶𝗻𝗴 (𝗘𝗥𝗪), we are demonstrating how basalt and other mineral resources can support durable 𝗰𝗮𝗿𝗯𝗼𝗻 𝗱𝗶𝗼𝘅𝗶𝗱𝗲 𝗿𝗲𝗺𝗼𝘃𝗮𝗹, regenerate soils, and strengthen agricultural productivity for smallholder farmers. Our engagement at this year’s conference reflects our commitment to aligning 𝗰𝗹𝗶𝗺𝗮𝘁𝗲 𝗶𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻 𝘄𝗶𝘁𝗵 𝗻𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗴𝗼𝗮𝗹𝘀, ensuring that mineral wealth contributes to both climate resilience and community empowerment. If you’re attending, we’d be delighted to connect. #MineralWealthConference #StackCarbon #CarbonRemoval #ClimateAction #SustainableMining #EnhancedRockWeathering #Uganda

𝐀 𝐬𝐢𝐠𝐧𝐢𝐟𝐢𝐜𝐚𝐧𝐭 𝐦𝐢𝐥𝐞𝐬𝐭𝐨𝐧𝐞 𝐢𝐧 𝐨𝐮𝐫 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐑𝐨𝐜𝐤 𝐖𝐞𝐚𝐭𝐡𝐞𝐫𝐢𝐧𝐠 (𝐄𝐑𝐖) 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 . 🌍 Last week, 𝘄𝗲 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹𝗹𝘆 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲𝗱 𝘁𝗵𝗲 𝘀𝗽𝗿𝗲𝗮𝗱𝗶𝗻𝗴 𝗼𝗳 𝗯𝗮𝘀𝗮𝗹𝘁 𝗿𝗼𝗰𝗸 𝗱𝘂𝘀𝘁 𝗼𝗻 𝗳𝗮𝗿𝗺𝘀 𝗶𝗻 𝗞𝗶𝗿𝘆𝗮𝗻𝗱𝗼𝗻𝗴𝗼 𝗗𝗶𝘀𝘁𝗿𝗶𝗰𝘁, a pivotal step following months of preparation. From rigorous soil baselining, to the sourcing and crushing of basalt, each stage has been carefully executed to bring us to this point. Through the application of finely crushed rock, 𝘄𝗲 𝗮𝗿𝗲 𝗮𝗰𝗰𝗲𝗹𝗲𝗿𝗮𝘁𝗶𝗻𝗴 𝗮 𝗻𝗮𝘁𝘂𝗿𝗮𝗹 𝗴𝗲𝗼𝗰𝗵𝗲𝗺𝗶𝗰𝗮𝗹 𝗽𝗿𝗼𝗰𝗲𝘀𝘀 𝘁𝗵𝗮𝘁 𝗽𝗲𝗿𝗺𝗮𝗻𝗲𝗻𝘁𝗹𝘆 𝘀𝗲𝗾𝘂𝗲𝘀𝘁𝗲𝗿𝘀 𝗮𝘁𝗺𝗼𝘀𝗽𝗵𝗲𝗿𝗶𝗰 𝗖𝗢₂, 𝘄𝗵𝗶𝗹𝗲 𝘀𝗶𝗺𝘂𝗹𝘁𝗮𝗻𝗲𝗼𝘂𝘀𝗹𝘆 𝗿𝗲𝘃𝗶𝘁𝗮𝗹𝗶𝘇𝗶𝗻𝗴 𝘀𝗼𝗶𝗹𝘀 𝗮𝗻𝗱 𝗲𝗻𝗵𝗮𝗻𝗰𝗶𝗻𝗴 𝗮𝗴𝗿𝗶𝗰𝘂𝗹𝘁𝘂𝗿𝗮𝗹 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝘃𝗶𝘁𝘆, creating tangible, long-term benefits for farmers. With the spreading phase now complete, 𝗼𝘂𝗿 𝗳𝗼𝗰𝘂𝘀 𝘁𝘂𝗿𝗻𝘀 𝘁𝗼 𝗺𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴 𝗮𝗻𝗱 𝗺𝗲𝗮𝘀𝘂𝗿𝗲𝗺𝗲𝗻𝘁, ensuring robust data on both the climate impacts and the tangible benefits for farmers and communities who steward the land. This achievement has only been possible through 𝘁𝗵𝗲 𝗱𝗲𝗱𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝗼𝘂𝗿 𝘁𝗲𝗮𝗺, 𝘁𝗵𝗲 𝗰𝗼𝗺𝗺𝗶𝘁𝗺𝗲𝗻𝘁 𝗼𝗳 𝗼𝘂𝗿 𝗽𝗮𝗿𝘁𝗻𝗲𝗿𝘀, and 𝘁𝗵𝗲 𝘁𝗿𝘂𝘀𝘁 𝗼𝗳 𝘁𝗵𝗲 𝗹𝗼𝗰𝗮𝗹 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝘁𝘆. Your support is the foundation of this work. #StackCarbon #EnhancedRockWeathering #CarbonRemoval #ClimateAction #SustainableAgriculture #SoilHealth #Africa CEEZER remove