Methodology
AMS-III.H
Also known as: Methane recovery in wastewater treatment
TL;DR
The CDM's small-scale methodology for methane recovery in wastewater treatment, capped at 60 ktCO2e/yr, current version 19 — the standard POME biogas methodology.
Full explainer
AMS-III.H is the CDM small-scale methodology for methane recovery in wastewater treatment systems. It is capped at 60 ktCO2e per year (the small-scale threshold) and is currently in version 19. The methodology covers the capture and combustion or beneficial use of methane that would otherwise be emitted from anaerobic decomposition of high-COD organic wastewaters.
In the Indonesian context AMS-III.H is the workhorse methodology for Palm Oil Mill Effluent (POME) biogas projects: covered anaerobic lagoons or CSTR digesters that capture methane from the POME stream and either flare it or use it for power generation and grid export. Many such projects originated under CDM and migrated to the voluntary market.
Related terms