More than 250 tonnes of waste dumped at Woy Woy on weekend after

Kincumber Waste Disposal


AGL owns and operates several renewable landfill gas and biogas (sewage) generation facilities across Australia.

Biogas, like solar and wind energy, is a renewable energy source produced from available raw materials and recycled waste. Biomass is a renewable energy source made from plants or plant materials. Bagasse is fuel made from sugar cane stalks. AGL owns and operates several renewable landfill gas and biogas (sewage) generation facilities across Australia.

These facilities, in addition to generating renewable energy, help to further reduce greenhouse gases by capturing and destroying methane, a greenhouse gas 21 times stronger than carbon dioxide.

AGL’s $16 million biogas utilisation project at Melbourne Water’s Western Treatment Plant in Werribee is the largest biogas power station in the southern hemisphere. The plant produces approximately 50, 000 megawatt hours of renewable energy pa and cuts Australia’s greenhouse gas emissions by 50, 000 tonnes a year. That’s enough electricity to power over 7000 households for an entire year.

AGL's Landfill and Biogas Assets

Source Energy Capacity Site Commissioned
Werribee Sewage Treatment Plant, VIC
Shoalhaven Landfill Gas Abatement Facility (NSW)
Woy Woy Landfill Gas Abatement Facility (NSW)
The facility is hosted by Gosford City Council, NSW
Kincumber Landfill Gas Abatement Facility (NSW)
The facility is hosted by Gosford City Council, NSW

Werribee Sewage Treatment Plant

The Werribee biogas generation facility captures methane from the anaerobic digestion of sewage waste water at the Melbourne Water Sewage Treatment Plant. This methane is then used to generate renewable power.

How does the facility operate?

The Werribee Sewage Plant receives Melbourne’s waste water and treats it via an anaerobic process. Portions of the lagoon receiving raw sewage are covered and oxygen is excluded. This causes an anaerobic reaction to take place during which methane gas is produced. This methane is captured and then used to fuel 7 x 1.06MW and 2 x 1.26 MW reciprocating engines for a total capacity of 10MW. The power station operates 24/7, 365 days per year.

What are the environmental benefits?

The capture of methane gas for electricity generation prevents its into the atmosphere while also displacing electricity that would otherwise be purchased from the Victorian grid. This facility contributes to helping Australia reduce greenhouse gas emissions by more than 400, 000 tonnes of CO2e per annum.

This can be equated to:

  • Generating enough renewable energy to power the equivalent of 12, 500 average Victorian households.
  • Greenhouse gas savings equivalent to taking 110, 000 average Australian cars off the road.
Where is the facility located?

Werribee Sewage Treatment Plant, VIC.

What is the energy capacity?

10 MW.

Shoalhaven Landfill Gas Abatement Facility

AGL is committed to the reduction of greenhouse gas emissions and supporting sustainable development initiatives.

The facility collects Landfill Gas (LFG) from sites used for Municipal Waste Collection. LFG is then transported via a complex network of wells and pipelines before being compressed and delivered to a spark ignition V12 reciprocating engine. This in turn drives a 1MW alternator. All renewable electricity is generated into the existing local grid supply. Not only did AGL design and construct the facility, AGL Energy Services employs its own qualified service technicians to deliver its maintenance and operations obligations.

Landfill gas generation reduces greenhouse gas emissions by capturing methane (a powerful greenhouse gas) that would otherwise be released into the atmosphere, and instead using it as a fuel to generate renewable electricity with a lower greenhouse intensity than would otherwise be supplied from the grid.

This facility contributes to helping Australia reduce greenhouse gas emissions by more than an estimated 28, 000 tonnes of CO2e per annum. This can be equated to:

  • Generating enough renewable energy to power the equivalent of approximately 800 average New South Wales households.
  • Greenhouse gas savings equivalent to taking approximately 7, 800 average Australian cars off the road.
Where is the site located?

Flat Rock Road, West Nowra, NSW.

1 MW.

Woy Woy landfill gas abatement facility

Methane-rich gas is produced by decomposing organic waste from within the landfill site at Woy Woy, NSW. This project involves the extraction and combustion of landfill gas to generate electricity.

How does the site operate?

The gas is extracted from the landfill through an array of wells interconnected by a network of buried pipes. A blower is used to actively draw the landfill gas into the extraction system. The generator runs on landfill gas connected via an integrated circuit panel to a step-up transformer. High voltage electricity is exported to the grid from the transformer. The generator is located in an acoustically lined building that also houses the control room. The building and remaining plant are enclosed within a fenced compound. The station can be remotely controlled and monitored. The generator operates 24/7.

How much energy is generated?

The plant produces approximately 7, 800 MWh of electricity pa, which is expected to provide the annual electricity requirements of around 1, 100 average households.



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