Ocean & Marine · Projected milestone

Ocean CO2 removal plants

Estimated year~2035

35% by 2040 · including earlier years

The year is an editorial timing estimate. The percentage applies to occurrence by the stated deadline. These estimates are not calibrated odds.

Electrochemical plants pull carbon dioxide out of seawater at megatonne scale and let the ocean absorb more.

What the forecast means

Milestone stage: milestone (legacy definition)

Completion criteria: Legacy milestone: refine the observable threshold before resolving.

This page describes a forecast, rather than an achieved result. Read the methodology and assumptions.

No individual source links are recorded for this milestone. Source coverage and review status vary across the atlas.

Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.