Twelve original posts today. Three CDI portfolio companies in the headlines. One new series launched. Here’s what happened in carbon removal on March 10.
✈️ Boeing × Carbonfuture: Aviation’s Biggest CDR Bet (CDI Portfolio 🏠)
Boeing signed a multi-year deal with Carbonfuture for at least 40,000 tonnes of durable carbon removal credits from four biochar projects in the Global South. That’s one of aviation’s largest high-durability CDR procurements ever — covering residual Scope 3 business travel emissions with centuries-scale carbon storage.
Carbonfuture is a CDI portfolio company. Boeing validates both biochar CDR at scale and the digital trust infrastructure the market needs.
🎬 NEW: CDR Watch — Silicate’s Limestone Approach (CDI Portfolio 🏠)
We launched CDR Watch, a new series spotlighting the best carbon removal content we find. First up: Silicate — the only enhanced weathering company using limestone instead of basalt.
Why that matters: limestone dissolves faster, farmers already use it for soil liming, and the chemistry produces dissolved bicarbonate that stores carbon for thousands of years. Silicate is a CDI portfolio company.
🗂️ 734 Companies. One Directory. One Afternoon.
We built a searchable directory of every known CDR company — 734 across 58 countries and 19 removal methods. Filterable by technology, country, category. Interactive charts, a world map, green badges for CDI portfolio companies.
The twist: the whole thing was built by an AI in a single afternoon. Dirk sent four messages.
📖 How we did it → · 🔍 Browse the directory →
⚡ Sustaera: 90%+ DAC Efficiency at 3x Lower Cost
North Carolina startup Sustaera claims its electro-thermal DAC achieves 90%+ energy efficiency and 3-5x lower capital costs than Climeworks and Carbon Engineering. If validated, sub-$100/tonne DAC is in sight.
🇨🇦 Climeworks Goes to Calgary (CDI Portfolio 🏠)
Climeworks opened its Canadian headquarters in Calgary, planning what could become its largest DAC facility globally in Alberta. Geological storage, clean energy, and regulatory certainty continue pulling CDR investment north — especially as US policy wavers.
🇰🇪 Kenya’s Carbon Credit Crackdown
KOKO Networks collapsed after Kenya denied its carbon credit authorization, exposing systemic fraud. Multiple projects face similar scrutiny. A cautionary tale for voluntary carbon markets — quality and integrity aren’t optional.
Also Noteworthy
🇺🇸 Washington State → California-Québec Carbon Market — A draft agreement outlines how Washington could link its cap-and-invest program to North America’s largest carbon trading system. (Read →)
🌍 Africa’s First CDR Summit — Nairobi will host the continent’s first dedicated carbon removal summit in April 2026, organized by Strathmore University. (Read →)
⛏️ Mining as CDR — A new whitepaper makes the case for scaling geochemical carbon removal through the mining industry’s existing infrastructure and waste streams. (Read →)
🌊 Two ocean CDR papers challenge assumptions — Nutrient cycling limits may cause biological CDR to overestimate sequestration; meanwhile, microbes on marine snow dissolve calcium carbonate faster than expected. (Nutrient problem → · Marine snow →)
📊 Exomad Green: 300K biochar credits — Bolivia-based Exomad Green passed 300,000 delivered carbon removal credits from large-scale biochar operations. (Read →)
CaptainDrawdown is published by the Carbon Drawdown Initiative, a climate investment fund focused on carbon removal startups.