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Sentinel
Who are we?
Sentinel is a South Korean climate tech startup specializing in converting agricultural and industrial waste — particularly coffee husks and waste tire— into high-value bioenergy products such as biochar, bio-oil, and solid fuels through advanced pyrolysis solutions. Our decentralized, modular systems support clean cooking, soil regeneration, and sustainable energy production, addressing environmental challenges, reducing greenhouse gas emissions, and creating local economic opportunities, with successful deployments in Africa.
Fast Facts
Headquarters: Seoul, South Korea
Founded: 2020
Team Size: 17 employees (engineering-led)
Stage: Early growth, revenue-generating
Email: nrlee@stracka.kr
Product & Technology
Sentinel's modular pyrolysis solution processes coffee husks, livestock manure, cashew shells, corn cobs, and waste plastic/tires (R&D phase). What is outputted from this is biochar (soil health, carbon removal), bio-oil (alternative fuel), briquettes (clean cooking), and carbon credits (via offset schemes).
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Traction
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$10M+ annual revenue
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Pilots in Uganda, Turkey, and Spain
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Major implementation in Quebec
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Discussions with P4G and E3 Capital
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Reseller partners active in Uganda
Key Differentiators
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Multi-waste input adaptability
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Self-powered modular units (low external energy need)
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Existing ground presence in Uganda
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Revenue from both energy product sales and carbon credits
Why Africa?
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East Africa relies on unsustainable biomass (charcoal/firewood) for cooking
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Deforestation, indoor pollution, and energy poverty are urgent challenges
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Coffee husks and agricultural waste are abundant yet underutilized
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Sentinel’s clean bioenergy solutions directly address health, environment, and access
Why Sentinel?
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Reduces dependency on charcoal and firewood
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Creates local biofuel value chains and clean energy jobs
Produces clean fuel and valuable soil-reviving biochar -
Modular approach creates easy deployment in rural and peri-urban areas
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Carbon credit monetization potential
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Book now
Don't miss your chance to explore collaborations and forge meaningful partnerships. Schedule a meeting with Sentinel Innovation today and be a part of the future of African innovation!
What we are looking for:
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Client leads and pilot opportunities.
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PoC Partners in Kenya and South Africa (coffee, grape, manure-rich sites)
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Distributors of clean cooking/biomass solutions
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Manufacturing/Tech Partners for system builds & support
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Impact Investors and DFIs to co-finance rollout
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Policy Stakeholders to ease permitting & recognition
