ZEN Carbon

About

ZEN Carbon is a Nairobi-based startup developing reactor-driven CO₂ mineralization technology that injects CO₂ into ready-mix concrete during mixing, forming stable calcium carbonate minerals and enabling reduced cement content. In late 2025 the company moved from pilot to industrial deployment via a partnership with Flamingo Concrete, and it is backed by the Carbon Drawdown Initiative. The company is also hiring technical staff (e.g. concrete chemistry and control/automation leads) as of early 2026.

History

• 2026-10-15 — refresh: coresignal
• 2026-10-15 — refresh: coresignal
• 2026-09-16 — news mention: Building climate technology takes more than good ideas. It takes an ecosystem that can execute.

At (source)

• 2026-09-15 — refresh: coresignal, screenshot
• 2026-09-02 — news mention: When science meets deployment, the conversation changes.

We recently had the privilege of hosting r (source)

• 2026-08-26 — news mention: CDR.fyi: 📰 This week saw some key developments in durable CDR, Senken and Carbonsate signed a biomas (source)
• 2026-08-15 — news mention: ZEN Carbon: On 12th August 2026, the Kenya Green Building Society (KGBS) joined KGBS member Zen Carb (source)
• 2026-08-15 — refresh: coresignal
• 2026-08-14 — news mention: Yesterday, we took another step toward changing how Africa builds.

We officially launched the Flami (source)

• 2026-08-03 — news mention: ZEN Carbon: ♻️ Nairobi’s Walkway That Eats Carbon A quiet stretch of pavement in Upper Hill is doing (source)
• 2026-08-03 — news mention: Octavia Carbon: 🌍 We are proud to have unveiled Africa’s first real-world green concrete deployme (source)
• 2026-07-27 — news mention: This weekend,Nation Media Group featured our journey and the story behind Africa’s first carbon min (source)
• 2026-07-27 — news mention: ZEN Carbon: The Office of the Special Envoy for Climate Change congratulates Zen Carbon and Octavia (source)
• 2026-07-27 — news mention: ZEN Carbon: History isn’t always written in books. Sometimes, it’s poured in concrete. For years, a (source)
• 2026-07-27 — news mention: Octavia Carbon: 🌍 We are proud to have unveiled Africa’s first real-world green concrete deployment, (source)
• 2026-07-23 — news mention: Building the Transition in Action: From Low-Carbon Materials to Market Transformation | Zen Carbon (source)
• 2026-07-15 — refresh: coresignal
• 2026-07-15 — refresh: coresignal
• 2026-07-10 — news mention: History isn't always written in books. Sometimes, it's poured in concrete. For years (source)
• 2026-07-09 — news mention: 🌍 We are proud to have unveiled Africa's first real-world green concrete deployment, a full (source)
• 2026-06-15 — refresh: coresignal
• 2026-06-15 — refresh: coresignal
• 2026-06-05 — news mention: The carbon removal ecosystem we imagined is beginning to take shape.

At ZEN Carbon, we’ve always be (source)

• 2026-06-04 — news mention: 🤝 We are excited to be advancing our work on CO₂ mineralization in concrete through a collaboration (source)
• 2026-05-14 — news mention: 🌍🇰🇪🇰🇷 From South Korea to Kenya,carbon removal collaboration is going global.

This week, we had the (source)

• 2026-05-01 — liveliness: 🟡 Moderate → 🟢 Active (source)
• 2026-05-01 — refresh: screenshot
• 2026-05-01 — refresh: coresignal, screenshot, liveliness
• 2026-05-01 — liveliness: 🟢 Active → 🟡 Moderate (source)
• 2026-04-19 — nulled Coresignal enrichment — LLM-verified mismatch: ZEN Carbon is a Nairobi-based CO₂-mineralization-in-concrete startup led by CEO Andy Onyango, with no reference to “clitruct” on its website or in any press coverage. The slug “clitruct” doesn’t match