AMS-III.Y. Methane avoidance through separation of solids from wastewater or manure treatment systems
AMS-III.Y. is a agriculture methodology used by 14 projects on Verra, American Carbon Registry (ACR). Registry records show 107,867 tonnes issued and 67.1% of them retired.
Key figures
Projects
14
Countries
1
Credits issued
107,867 t
Credits retired
72,392 t
Retired share of issued
67.1%
Projects with uncovered reversals
0
Projects yet to issue
57.1%
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
- American Carbon Registry (ACR) 2024 to 2026: approved · 2027 to 2029: approved
Issuance by vintage
| Vintage | Issued (tCO₂e) |
|---|---|
| 2020 | 3,548 |
| 2019 | 16,564 |
| 2018 | 6,302 |
| 2017 | 3,250 |
| 2016 | 3,829 |
| 2015 | 4,720 |
| 2014 | 22,842 |
| 2013 | 2,975 |
| 2012 | 2,909 |
| 2011 | 2,680 |
| 2010 | 1,091 |
| 2009 | 18,542 |
| 2008 | 9,812 |
| 2007 | 8,803 |
Source: Berkeley Voluntary Registry Offsets Database · Data as of June 2026
Projects using AMS-III.Y.
14 project pages in the CRBN.credit database, largest issuance first.
Laurelbrook Farm Dairy Manure Advanced Separation Project
Verra · United States · Ghg Management
39.3K
issued tCO₂e
West Star North Dairy
Verra · United States · Ghg Management
20.2K
issued tCO₂e
Northeast Farm Separation Project - Phase 1
Verra · United States · Ghg Management
19.1K
issued tCO₂e
Bos Dairy Farm Project
Verra · United States · Ghg Management
17.0K
issued tCO₂e
Castelanelli Bros Dairy Digester
American Carbon Registry (ACR) · United States · Ghg Management
11.3K
issued tCO₂e
Grouped Dairy Manure Separation Projects; Phase I
Verra · United States · Ghg Management
1.0K
issued tCO₂e
Alberto Dairy Worm Farm
Verra · United States · Ghg Management
Not yet issued
Diamond Dairy Vermifiltration
Verra · United States · Ghg Management
Not yet issued
Dugan Family Farms Advanced Solid Separation Project
Verra · United States · Ghg Management
Not yet issued
Figure 8 Environmental Advanced Solid Separation Grouped Project
Verra · United States · Ghg Management
Not yet issued
Hesse & Sons Dairy Vermifiltration
Verra · United States · Ghg Management
Not yet issued
JR Dairy Farm Project
Verra · United States · Ghg Management
No issuance recorded
Livestock Water Recycling Advanced Solid Separation Grouped Project
Verra · United States · Ghg Management
Not yet issued
Sunview Dairy Vermifiltration
Verra · United States · Ghg Management
Not yet issued
Related methodologies
Same scope, with a more favourable ICVCM decision.
- CAR U.S. Soil Enrichment Protocol 4 projects · CCP-Approved
- ARB Compliance Offset Protocol: Capturing and Destroying Methane from Manure Management Systems 72 projects · Under assessment, no decision published
- VM0041 Methodology for the Reduction of Enteric Methane Emissions from Ruminants through the Use of Feed Ingredients 28 projects · Under assessment, no decision published
- CAR Mexico Livestock Protocol 3 projects · Under assessment, no decision published
- VM0042 Methodology for Improved Agricultural Land Management 228 projects · Withdrawn from assessment
- VM0051 Improved Management in Rice Production Systems 9 projects · Withdrawn from assessment
Questions about AMS-III.Y.
How many projects use AMS-III.Y.?
14 projects, in 1 country, as of June 2026.
Is AMS-III.Y. approved by the ICVCM?
No ICVCM decision on this methodology yet.
How much of the credits issued under AMS-III.Y. have been retired?
67.1%, or 72,392 of 107,867 tonnes.