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AMS-III.Y — Methane avoidance through separation of solids from wastewater or manure treatment systems

About this methodology

Projects remove organic solids from wastewater or manure before anaerobic treatment and handle them in a lower-emission way. The method measures methane avoided through that separation and treatment.

Issued by
CDM (UNFCCC) · issuer's site
Version
4.0 · source ·
Status
Active at CDM / UNFCCC · source ·
Climate outcome
Emission reductions
Activity
Wastewater and livestock
Official page
cdm.unfccc.int ·
Also used by projects of

How methodology v3 reads projects of this type

What CarbonMeld reads

  • A confirmed investment analysis A-INVEST

    The documents show a project-level additionality test, the validation confirmed it, and it is an investment analysis (a numeric test of the project's finances with and without carbon revenue).

Figures set against the methodology's own values

  • Integrity comparison

    The small-scale limit is 60 kt CO2e per year (p. 5). CarbonMeld compares the project's annual estimate with it. CM-F-AMS-III-Y-SMALL-SCALE-LIMIT

    small-scale limit: 60 kt CO2e per year

    Link

Deductions that can apply

  • A methane activity the law requires A-LEGAL

    The rule applies to projects that capture or avoid methane. These are landfill gas, manure, wastewater, composting and coal-mine methane. They also include orphan wells, oil and gas leaks, rice, enteric methane and household biogas. The documents state that the law requires the activity. Or the documents state that a law requires the capture of the gas. An activity that the law already requires is not additional. If the documents show that the baseline already deducts the amount that the law requires, CarbonMeld takes no point.

Set by the methodology or the programme, not assessed by our current method

  • not assessed

    Leakage: the methodology sets rules for it in some cases (AMS-III.Y v04.0 Leakage paras 38–39, p. 12). Our current method does not assess it. CM-F-AMS-III-Y-LEAKAGE

    Link
  • not assessed

    Tracking of the end use: the methodology sets rules for it (AMS-III.Y v04.0 para 10, p. 5). Our current method does not assess it. CM-F-AMS-III-Y-END-USE-TRACKING

    Link
  • not assessed

    Social safeguards and consent of communities (FPIC): any such rules come from the programme, not the methodology. Our current method does not assess it. CM-F-AMS-III-Y-SAFEGUARDS-FPIC

    Link

Not applicable to this type — never a gap in our current method

The criterion does not apply to this methodology. Our current method never counts it as a gap.

The general rules apply as well. Read the general rules.

The rules of methodology v2.2, as they were: the archived v2.2 page.

History and transitions

All 4 versions

  • v04.0adopted 4 Nov 2016source

    EB92, Annex 12 Revision to allow the use of organic bedding material in the project activity.

  • v03.0adopted 2 Mar 2012source

    To provide more guidance on emissions from enteric fermentation, and from thermal treatment of wastewater.

  • v02.0adopted 16 Oct 2009source

    The applicability conditions are expanded to allow the use of flocculants in the pre-separation phase to improve the subsequent mechanical solid-liquid separation efficiency.

  • v01.0adopted 28 Nov 2008source

    Initial adoption.

Projects using AMS-III.Y

Browse 24 published projects using AMS-III.Y, listed alphabetically. There is no ranking for this methodology yet: it appears here automatically once 5 of its projects not in the pipeline or under validation are rated. Open a project to view its registry details and the analysis available for that project.

Which registries list projects under AMS-III.Y?

In CarbonMeld's data, AMS-III.Y projects are on 2 registries: Verra (18) and CDM (6). Being listed on a registry is not the same as being registered: the «Registered» column counts the projects each registry shows as registered, and credits are issued only after each verification.

RegistryProjectsRegisteredProjects list
Verra (VCS)181See the list
CDM (UNFCCC)62See the list

Counts of project records in CarbonMeld's data, with or without a CarbonMeld analysis. «Registered» counts the records whose current registry status is «registered», as last read (15 November 2026); projects in a later status, such as awaiting verification approval, late to verify or completed, are not in that column.

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