Tonga
- Biogas feasibility study for the Tonga Circular Economy Project
(UNIDO, Wien, 2020-2021)

Australia
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Design and erection planning of a biogas plant for the treatment of slaughterhouse waste and wastewater
(private client, 2013-2016)
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Calculation and implementation planning of a biogas plant for the treatment of pig manure
(private client, 2011) -
Feasibility study on the financing, design, construction, and operation of a biogas plant to treat mixed organic waste streams in Maryborough
(private client 2009 – 2010)