River Alkalinity Enhancement
River Alkalinity Enhancement is a engineered removal methodology used by 2 projects. Registry records show 75 tonnes issued and 29.3% of them retired.
Key figures
Projects
2
Countries
2
Credits issued
75 t
Credits retired
22 t
Retired share of issued
29.3%
Projects yet to issue
50%
Source: Berkeley Voluntary Registry Offsets Database, as used by the Methodology Lab · Data as of June 2026
ICVCM status
No ICVCM decision on this methodology yet.
The CCP label is applied to credits by the registry, issuance by issuance. An approved methodology means credits from projects using it can be eligible; it does not mean every credit carries the label.
CORSIA programme relevance
Whether the programmes this methodology is used on are approved by ICAO. Programme level only; unit eligibility depends on dates, authorisation and each programme's exclusions.
Issuance by vintage
| Vintage | Issued (tCO₂e) |
|---|---|
| 2025 | 75 |
Source: Berkeley Voluntary Registry Offsets Database · Data as of June 2026
Related methodologies
Same scope, with a more favourable ICVCM decision.
- VM0049 Carbon Capture and Storage 4 projects · Under assessment, no decision published
Questions about River Alkalinity Enhancement
How many projects use River Alkalinity Enhancement?
2 projects, in 2 countries, as of June 2026.
Is River Alkalinity Enhancement approved by the ICVCM?
No ICVCM decision on this methodology yet.
How much of the credits issued under River Alkalinity Enhancement have been retired?
29.3%, or 22 of 75 tonnes.