Anaerobic Digestion.

From waste to a valuable resource, discover how our state of the art Anaerobic Digestion technologies can transform your energy and waste systems. 

Anaerobic digestion is a natural biological process that occurs in the absence of oxygen, during which microorganisms break down organic materials, such as food waste, agricultural residues, and sewage sludge, to produce biogas and nutrient-rich digestate. This process takes place in a controlled environment, typically within anaerobic digesters. As organic matter decomposes, complex organic compounds are broken down into simpler molecules by a consortium of microorganisms, including bacteria and archaea.

Energy from waste.

The primary output of anaerobic digestion is biogas, which is composed mainly of methane (CH4) and carbon dioxide (CO2), and digestate, a nutrient-rich material that can be used as a fertiliser. Anaerobic digestion not only provides a sustainable way to manage organic waste but also generates renewable energy in the form of biogas, which can be used for heat, electricity, and even vehicle fuel.

"Aligning Australia’s organic waste management with circular economy principles is not only critical for reducing methane emissions and reaching net zero by 2050, it’s also an opportunity to transform waste into a valuable energy resource."

Flexible, high performance systems.

Our Anaerobic Digestion technologies work with a flexible array or feedstock volumes and sources – from agricultural waste through to FOGO, manure, wastewater and more. We begin with an in depth analysis of your feedstock to determine expected results, as well as determine which technologies will best suit your site.  

State of the art technology.

Anaerobic Digester

he heart of the anaerobic digestion process, this tank or vessel provides an oxygen-free environment where microorganisms can break down organic materials. There are various types of digesters, including continuous stirred-tank reactors (CSTR), plug flow reactors, and more.

Feedstock Handling System.

This equipment prepares and introduces the organic feedstock (such as food waste, agricultural residues, or sewage sludge) into the digester. It can include shredders, grinders, and pumps to ensure the feedstock is properly processed and mixed.

Mixing System.

Efficient mixing is crucial to maintain uniform conditions within the digester, promoting microbial activity and preventing stratification. Mechanical mixers or gas recirculation systems are often used for this purpose.

Heating System.

Anaerobic digestion is temperature-sensitive, and maintaining the appropriate temperature range is essential for optimal microbial activity. Heating systems, such as heat exchangers, boilers, or even solar panels, help control the temperature within the digester.

Get started with one of our Project Questionnaires.

Whether you’re researching, in pre-feasibility stage or shovel ready, our no obligation project questionnaires will help you explore the next step for your biogas project, fill out the relevant form below. 

Project Questionnaire - Biogas projects where an Anaerobic Digestion component is required.

Have a potential feedstock and looking to develop a feedstock to biogas solution? This project questionnaire will help us develop a solution for your project.

Project Questionnaire - Biogas Projects without Anaerobic Digestion component.

For operations looking to upgrade or add on biogas plant equipment and technologies where the biogas is already being produced, use this questionnaire.


Anaerobic digestion can process a wide range of organic materials, including food waste, crop residues, manure, wastewater sludge, and organic byproducts from industries like breweries or dairy farms.

Efficiency depends on factors such as feedstock quality, temperature, retention time, pH levels, and management practices. Proper monitoring and optimisation of these factors can maximise biogas production and nutrient recovery.

Yes, anaerobic digestion can complement existing waste management strategies by diverting organic waste from landfills and providing renewable energy and nutrient-rich fertiliser as byproducts. Integration may require infrastructure modifications and careful planning.s

The ROI for anaerobic digestion projects can vary based on factors such as feedstock availability, energy prices, regulatory incentives, and capital costs. A comprehensive financial analysis considering these factors is essential for determining the potential ROI. Many of our clients achieve ROI in as little as 3-5 years.

Capital costs can include equipment, construction, infrastructure, permits, and engineering services. These costs depend on the scale and complexity of the project – contact us for more information on your specific project.

Operating costs include feedstock procurement, labor, maintenance, utilities, and waste disposal. Optimising operational efficiency and minimising costs are crucial for maximising profitability over the project’s lifespan. We always recommend that our clients access our 5 or 10 year manitenance plans to ensure they get the most out of their energy assets.

Ready to reach your energy goals?

Backed by more than 40 years' experience, our specialist team are ready to power your energy project forward.