AMS-III.I. Avoidance of methane production in wastewater treatment through replacement of anaerobic systems by aerobic systems
AMS-III.I. is a waste management methodology used by 5 projects on Verra, Gold Standard. Registry records show 154,720 tonnes issued and 52.5% of them retired.
Key figures
Projects
5
Countries
3
Credits issued
154,720 t
Credits retired
81,282 t
Retired share of issued
52.5%
Projects yet to issue
40%
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.
- Verra 2024 to 2026: approved · 2027 to 2029: approved
- Gold Standard 2024 to 2026: approved · 2027 to 2029: approved
Issuance by vintage
| Vintage | Issued (tCO₂e) |
|---|---|
| 2011 | 27,698 |
| 2010 | 30,247 |
| 2009 | 15,272 |
| 2008 | 69,497 |
| 2007 | 12,006 |
Source: Berkeley Voluntary Registry Offsets Database · Data as of June 2026
Projects using AMS-III.I.
5 project pages in the CRBN.credit database, largest issuance first.
Chumporn applied biogas technology for advanced waste water management
Gold Standard · Thailand · Ghg Management
73.2K
issued tCO₂e
Irani Wastewater Methane Avoidance Project
Verra · Brazil · Ghg Management
58.7K
issued tCO₂e
Granja Tres Arroyos Methane Avoidance in Slaughterhouse Effluents Project
Verra · Argentina · Ghg Management
22.8K
issued tCO₂e
Methane Avoidance in Anaerobic Lagoons Grouped Project
Verra · Brazil · Ghg Management
Not yet issued
Sicredi Methane Avoidance in Animal Effluents Umbrella Program
Verra · Brazil · Ghg Management
Not yet issued
Related methodologies
Same scope, with a more favourable ICVCM decision.
- CAR U.S. and Canada Biochar Protocol 9 projects · CCP-Approved
- ACM0001 Flaring or use of landfill gas 181 projects · Under assessment, no decision published
- AMS-III.G. Landfill methane recovery 6 projects · Under assessment, no decision published
- CAR U.S. Landfill Protocol 128 projects · Withdrawn from assessment
- VM0044 Methodology for Biochar Utilization in Soil and Non-Soil Applications 12 projects · Withdrawn from assessment
Questions about AMS-III.I.
How many projects use AMS-III.I.?
5 projects, in 3 countries, as of June 2026.
Is AMS-III.I. approved by the ICVCM?
No ICVCM decision on this methodology yet.
How much of the credits issued under AMS-III.I. have been retired?
52.5%, or 81,282 of 154,720 tonnes.