EFI fabricated and installed anaerobic lagoon covers and a biogas system at Grupo Hame's Olmeca III palm oil mill in Tecún Umán, Guatemala. The original case study identifies a two-digester project in June 2009. It records the installation scope and the plant's reported operating figures at that time.
The wastewater and gas path
The mill processed 720 tons of fruit and generated 1,000 cubic meters of wastewater per day, according to the case study. Palm oil mill effluent flowed to the anaerobic digesters. Collected biogas went to engine-generator sets, and excess gas went to a flare.
The historical account reports 24,000 cubic meters of biogas per day, methane concentrations of 54 to 65 percent and approximately 2 MW of continuous electrical output. These are figures reported in the case study. They are not a measurement of the plant's output today or a forecast for another facility.
EFI's documented work
EFI was selected to fabricate and install the covers and biogas system. The covers used 60 and 80 mil HDPE manufactured by Polyex S.A. The case study names Consorcio Ingeniería Ambiental Mexicana CIAM / Bunge Emissions Group as project engineers.
That scope establishes EFI's role in gas containment and collection. The source does not assign generator supply, all process design or carbon-credit verification to EFI.
What the carbon-credit record establishes
The UNFCCC registry identifies this installation as CDM project 2667, Biogas Project, Olmeca III, Tecún Uman, in Guatemala. It records registration on November 23, 2009 and separate issuance records for defined monitoring periods. The registry's annual reduction forecast is distinct from those issuances.
EFI's historical case study estimated 37,370 Certified Emission Reductions annually. That estimate should not be presented as a fixed number of credits earned every year. The public registry linked below provides the project documents and issuance history.
Using this history when planning a project
Olmeca III documents a particular wastewater stream, two digesters and a defined cover and gas-system scope. Its reported gas and power figures do not establish what a different plant will produce. For a new cover installation, EFI can review the lagoon layout, available wastewater and gas data, and the intended use of collected biogas with the project team.
Source review: September 23, 2026. This article was checked against the original EFI Grupo Olmeca case study in the 2014 collection and the public UNFCCC project record. It does not assert current plant performance, current credit issuance or a guaranteed project return.
