Equatic competitors

Removes CO2 by spreading crushed basalt on croplands, paired with soil-based measurement and verification.

Carbon Removal (CDR) · Series A

Carbon Removal (CDR)

Series A

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HQ

Electrochemical ocean alkalinity enhancement that splits seawater to remove CO2 and reduce ocean acidity.

Carbon Removal (CDR) · Series A $20M

Carbon Removal (CDR)

Series A

$20M

HQ

Direct Ocean Capture using electrodialysis to pull CO2 from seawater so the ocean reabsorbs it from the air.

Carbon Removal (CDR) · Series A $21.5M

Carbon Removal (CDR)

Series A

$21.5M

HQ

Permanently stores carbon by injecting nonhazardous organic waste slurry thousands of feet underground.

Carbon Removal (CDR) · Series A

Carbon Removal (CDR)

Series A

—

HQ

Dries and compresses waste biomass into stable carbon blocks that are wrapped and buried for permanent storage.

Carbon Removal (CDR) · Series A $30M

Carbon Removal (CDR)

Series A

$30M

HQ

Spreads crushed basalt and silicate rock on farmland to remove CO2 via enhanced weathering; a Microsoft supplier.

Carbon Removal (CDR) · Series B $12M

Carbon Removal (CDR)

Series B

$12M

HQ

Enhanced rock weathering on tropical Brazilian farmland for durable carbon removal and soil remineralization.

Carbon Removal (CDR) · Seed $4.6M

Carbon Removal (CDR)

Seed

$4.6M

HQ

Nonprofit-backed enhanced rock weathering on smallholder farms in India and Africa; won the $50M XPRIZE grand prize.

Carbon Removal (CDR) · XPRIZE Grand Prize $50M

Carbon Removal (CDR)

XPRIZE Grand Prize

$50M

HQ