This resource is no longer maintained or updated, read our post.
This resource is no longer maintained or updated, read our post.
This resource is no longer maintained or updated, read our post.
This resource is no longer maintained or updated, read our post.
CDR Database
These are reports on public Carbon Dioxide Removal project proposals. Built for transparency. Download as a JSON or CSV (licensed as CC-BY). Read our methods.

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Total
219
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040
Volume
48M
44.01
mineralizationinjection
CO₂ storage via injection and mineralization in peridotite.
Stripe Fall 2021/Oman
Biorecro
biomassinjection
Negative emissions with BECCS on an ethanol plant.
Microsoft 2021/Illinois, USA
Carbo Culture
biomassbiochar
Fossilization of lignocellulosic waste into stable and functional biocarbons.
Stripe Spring 2021/Finland
Carbofex
biomassbiochar
Biochar technology company.
Stripe Spring 2021/Finland
CarbonBuilt
mineralizationconcrete
Startup commercializing a low-cost, scalable, low-carbon concrete technology.
Stripe Spring 2021/USA
Charm Industrial
biomassinjection
Geological sequestration of bio-oil.
Stripe 2020/CA, USA
Climate Foundation
oceanmacroalgae
Growing seaweed via Marine Permaculture and sinking it into the deep ocean.
Stripe Spring 2021/Pacific Ocean (near Phillippines)
Climeworks
dacmineralization
Direct air capture and mineralization.
Microsoft 2021/Reykjavik, Iceland
Droneseed
forestsreforestation
Reforestation using heavy-lift drone swarms and seed enablement.
Microsoft 2021/Washington, USA
Eion Corp
mineralizationolivine
Olivine mineralization in agricultural applications.
Stripe Fall 2021/Princeton, NJ and Berkeley, CA
Finnish Log House
biomasswood
Manufacturing wooden building elements.
Stripe 2020/Finland
GreenSand
mineralizationolivine
Removing CO₂ with surface mineralization of Olivine.
Stripe Spring 2021/Netherlands
Neustark
mineralizationconcrete
Mineralization of atmospheric CO₂ in demolished concrete.
Stripe Spring 2021/Switzerland
Project Vesta
mineralizationocean
Accelerating olivine weathering with wave power for CO₂ removal.
Microsoft 2021/California, USA
SeaChange
oceanmineralization
Mineralization reactors for CO₂ removal with hydrogen co-production.
Stripe Spring 2021/California, USA
SilviaTerra
forestsifm
Forest carbon rental markets.
Microsoft 2021/USA
South Pole
dacinjection
Direct air capture and storage by using Carbon Engineering technology.
Microsoft 2021/Texas, USA
SuSeWi
oceanburial
Sequestering carbon and producing food by creating large-scale algal blooms in desert environments.
Stripe Spring 2021/Morocco
Terraformation
forestsreforestation
Reforestation through the Hawaiʻi Pathfinder Project.
Microsoft 2021/Hawaii, USA
Vandersanden
mineralizationconcrete
Producing bricks and slips by carbonation.
Stripe 2020/Finland
8 Rivers
dacmineralization
Direct air capture via mineralization.
Stripe Fall 2021/Arizona, USA
C-Sink
oceanbiomass
Sinking biomass for deepwater storage.
Stripe Spring 2021/Black Sea
Carbofex
biomassbiochar
Demonstration and commercialisation of biochar.
Stripe 2020/Tampere, Finland
Carbon Engineering
dacinjection
Global opportunities for affordable, scalable DAC and storage at climate-relevant volumes.
Microsoft 2021/Global
CarbonCure
mineralizationconcrete
Carbon reductions in concrete.
Stripe 2020/North America
Charm Industrial
biomassinjection
Geological sequestration of bio-oil.
Microsoft 2021/Kansas, USA
Climeworks
dacmineralization
Direct air capture and mineralization.
Stripe 2020/Iceland
CO₂-Zero
mineralizationolivine
Surface olivine weathering.
Stripe Spring 2021/Turkey
Ebb Carbon
oceanalkalinity
Seawater alkalinization.
Stripe Fall 2021/California, USA
Ensyn
biomassasphalt
Incorporating pyrolysis by-products into asphalt.
Stripe Spring 2021/Canada
Finnish Log House
biomasswood
Manufacturing wooden building elements.
Microsoft 2021/Finland
Mission Zero
dacaggregate
Direct air capture coupled with utilization by O.C.O. Technology.
Stripe Spring 2021/United Kingdom
Project Vesta
mineralizationocean
Accelerating olivine weathering with wave power for CO₂ removal.
Stripe 2020/Caribbean
Running Tide
oceanmacroalgae
Ocean technology and aquaculture company.
Stripe Spring 2021/Atlantic Ocean
SilviaTerra
forestsifm
Forest carbon rental markets.
Stripe 2020/Southern USA
Solid Carbon
mineralizationinjection
CO₂ storage via offshore geologic injection and mineralization.
Stripe Fall 2021/Cascadia Basin, Canada
Stockholm Exergi
biomassinjection
BECCS from existing CHP running on forest residues.
Microsoft 2021/Sweden
Sustaera
dacmineralization
Direct air capture and geologic injection.
Stripe Fall 2021/North Carolina, USA
UNDO (prev. Future Forest)
mineralizationbasalt
Enhanced weathering for carbon removal.
Stripe Spring 2021/United Kingdom
VTT Bio-concrete
mineralizationconcrete
Demonstration and piloting of carbon negative concrete.
Stripe Spring 2021/Finland