33 published companies work on Enhanced Weathering as their primary pathway (as of 2026-11-04). The full directory has every pathway; the data page has the files.
33companies
17countries
13in Europe
26Active
0Moderate
2Suspect
5Likely dead
Status is estimated from public signals (news, registry activity, job postings, web presence, funding) and re-evaluated regularly. Active recent signals of activity Moderate some signals, limited recent evidence Suspect few or no recent signals Likely dead no detectable activity, which may be wrong
Size: Company size classes follow the EU SME staff thresholds (micro under 10, small 10 to 49, medium 50 to 249, large 250 and more), derived from LinkedIn size bands; exact headcounts are not published.
| Company | Pathway | Method | Country | Status | Size |
|---|---|---|---|---|---|
| AEROC CDISpreads crushed basalt rock flour on agricultural fields in Germany to accelerate silicate weathering and permanently sequester atmospheric… | Enhanced Weathering | Enhanced Rock Weathering | Germany | Active | Micro (under 10) |
| Alt CarbonSpreads waste basalt rock dust from Rajmahal Traps on tea and rice farmland in eastern India, where it reacts with rainwater to form… | Enhanced Weathering | Enhanced Rock Weathering | India | Active | Medium (50 to 249) |
| Anglo AmericanApplies magnesium-rich ferronickel smelter slag from its Brazilian mining operations to agricultural land as an ERW feedstock, generating… | Enhanced Weathering | Enhanced Rock Weathering | United Kingdom | Active | Large (250+) |
| AquarryDissolves alkaline minerals (including mine tailings/waste rock) into flooded open-pit mine lakes to absorb atmospheric CO2 and precipitate… | Enhanced Weathering | Ocean Alkalinity Enhancement | United States | Active | Micro (under 10) |
| Basic DustApplies finely pulverized alkaline rock powder to water bodies and agricultural land to mineralize atmospheric CO2 into bicarbonates for… | Enhanced Weathering | Enhanced Rock Weathering | United States | Likely dead | |
| Canadian WollastoniteMines and crushes wollastonite (calcium silicate); supplies the fast-weathering mineral to UNDO for spreading on Ontario farmland to enable… | Enhanced Weathering | Canada | Active | Small (10 to 49) | |
| Carbon BankDevelops enhanced rock weathering projects spreading basalt dust on UK farmland (Northumberland), verified under the Isometric Standard,… | Enhanced Weathering | Enhanced Rock Weathering | United Kingdom | Active | Micro (under 10) |
| Carbon Drawdown InitiativeRuns Project Carbdown — multi-year ERW field and greenhouse experiments spreading basalt/olivine on croplands with custom-built sensor… | Enhanced Weathering | Germany | Active | Micro (under 10) | |
| Carbon Neutral InitiativeApplies crushed silicate minerals (olivine) to green roofs and garden soils to permanently remove atmospheric CO2 via enhanced rock… | Enhanced Weathering | Enhanced Rock Weathering | Netherlands | Active | Micro (under 10) |
| CarbonaughtSpreads crushed basalt (from quarry/mining waste) on agricultural fields to accelerate silicate weathering reactions that convert… | Enhanced Weathering | Enhanced Rock Weathering | Australia | Active | Micro (under 10) |
| CarbonRunAdds crushed limestone to acidified rivers (River Alkalinity Enhancement), converting CO2 to bicarbonate that is transported to the ocean… | Enhanced Weathering | Ocean Alkalinity Enhancement | Canada | Active | Small (10 to 49) |
| CarbonySpreads finely ground silicate rock in managed forest soils in Central/Eastern Europe to accelerate weathering reactions that convert… | Enhanced Weathering | Enhanced Rock Weathering | Austria | Suspect | Micro (under 10) |
| Cascade ClimateNonprofit that builds ERW quantification standards, digital tools (Weathering Potential Explorer, ERW-MAC, Data Quarry), and funds… | Enhanced Weathering | CDR Platform/Marketplace | United States | Active | Small (10 to 49) |
| ClimeRockSpreads finely ground basalt sourced from Massif Central quarries onto agricultural fields to accelerate silicate weathering and sequester… | Enhanced Weathering | Enhanced Rock Weathering | France | Active | Micro (under 10) |
| CREW Carbon CDIEngineered enhanced weathering deployed inside municipal wastewater treatment plants: dosing limestone to convert biogenic CO2 into… | Enhanced Weathering | Ocean Alkalinity Enhancement | United States | Active | Small (10 to 49) |
| Flux CDISpreads crushed basalt rock powder on African farmland (Kenya, with expansion to Cameroon and Nigeria) to accelerate silicate weathering… | Enhanced Weathering | Enhanced Rock Weathering | Kenya | Active | Small (10 to 49) |
| Goal 300Applies finely crushed basalt to agricultural fields in the US Pacific Northwest to accelerate silicate weathering and permanently… | Enhanced Weathering | Enhanced Rock Weathering | United States | Likely dead | Micro (under 10) |
| Green SequestDevelops ex-situ Enhanced Rock Weathering using crushed antigorite serpentinite, accelerated via thermoactivation and organic salts,… | Enhanced Weathering | Enhanced Rock Weathering | Poland | Active | Micro (under 10) |
| greenSandgreenSand mines, grinds and distributes olivine rock as a replacement for conventional sand and stone to drive enhanced rock weathering,… | Enhanced Weathering | Enhanced Rock Weathering | Netherlands | Active | Micro (under 10) |
| InPlanet CDISpreads finely crushed basalt rock powder on tropical farmland in Brazil to accelerate silicate weathering, permanently sequestering CO2 as… | Enhanced Weathering | Enhanced Rock Weathering | Brazil | Active | Medium (50 to 249) |
| Lithos CDIApplies crushed basalt rock dust (quarry byproduct) to US farmland, using ML-driven soil sampling and monitoring to quantify CO2 captured… | Enhanced Weathering | Enhanced Rock Weathering | United States | Active | Small (10 to 49) |
| MetalplantGrinds olivine and spreads it on serpentine soils in Albania where nickel-hyperaccumulator plants grow, co-producing ERW-based CDR and… | Enhanced Weathering | Enhanced Rock Weathering | United States | Active | Medium (50 to 249) |
| reverceDevelops an end-to-end ERW process chain — matching silicate rock dust to soil/crop combinations on farmland and using direct measurement… | Enhanced Weathering | Enhanced Rock Weathering | Germany | Likely dead | Micro (under 10) |
| Rock Flour Company CDIHarvests naturally ultra-fine glacial rock flour from Greenlandic fjord deltas and applies it to croplands in warmer climates, where it… | Enhanced Weathering | Enhanced Rock Weathering | Denmark | Active | Micro (under 10) |
| RubiscoBlackDeveloping microbial technologies to accelerate olivine rock weathering on agricultural fields by addressing rock powder wastage and… | Enhanced Weathering | Enhanced Rock Weathering | India | Active | Micro (under 10) |
| Silica CDISpreads finely ground silicate rocks on Mexican sugarcane fields to accelerate natural weathering and permanently sequester CO2 as… | Enhanced Weathering | Enhanced Rock Weathering | Mexico | Active | Small (10 to 49) |
| Silicate CDIMills waste returned concrete (and limestone) and spreads it on farmland as a soil pH amendment; CO2 is captured as dissolved bicarbonate… | Enhanced Weathering | Enhanced Rock Weathering | Ireland | Active | Micro (under 10) |
| Syntopa CDIDevelops microbial inoculants that accelerate silicate rock dissolution in agricultural soils, paired with a data platform (Toposight) that… | Enhanced Weathering | Enhanced Rock Weathering | United States | Likely dead | Micro (under 10) |
| TamboraDeploys Enhanced Rock Weathering (crushed silicate rock dust) and biochar across Indonesian and Asia-Pacific agricultural and mining lands… | Enhanced Weathering | Enhanced Rock Weathering | Indonesia | Likely dead | Micro (under 10) |
| Terradot CDISpreads crushed basalt (and, via Eion acquisition, olivine) on farmland to accelerate silicate rock weathering that sequesters atmospheric… | Enhanced Weathering | Enhanced Rock Weathering | United States | Active | Medium (50 to 249) |
| TerrasolsCrushes volcanic basalt and applies it to smallholder farmers' fields in India to accelerate mineral weathering and permanently remove… | Enhanced Weathering | Enhanced Rock Weathering | India | Active | Small (10 to 49) |
| Tropicarbon CDISpreads custom silicate rock blends on Colombian farmland with proprietary aqueous-phase MRV to quantify carbon removal and sell credits. | Enhanced Weathering | Enhanced Rock Weathering | Colombia | Suspect | Micro (under 10) |
| UNDOUNDO spreads crushed basalt and wollastonite on agricultural fields to accelerate silicate weathering and generate durable CO2 removal… | Enhanced Weathering | Enhanced Rock Weathering | United Kingdom | Active | Medium (50 to 249) |
No company matches these filters.
AI-maintained, may contain errors. The seed was Grant Faber's CDR company list (January 2026, CC BY-NC-SA 4.0). Descriptions, pathway, status and size class are generated and refreshed by CaptainDrawdown from public signals (news, registries, press releases, web search) and are estimates, not verified facts. Companies marked CDI are portfolio companies of the Carbon Drawdown Initiative. Buyers, academia and companies whose only pathway is afforestation are not published. Corrections and missing companies: info@carbon-drawdown.de. The same data as CSV, JSON and API, licence CC BY-NC-SA 4.0.