Energy from Waste (EfW) in Australia: A Solution With Limitations

Energy from Waste can divert suitable residual material from landfill and recover energy but the fact that a waste is combustible does not make it suitable for EfW.

A waste may be non-recyclable, combustible and otherwise destined for landfill, yet still fall outside an Energy from Waste (EfW) facility’s approved feedstock.

Australia’s investment in EfW brings that distinction into sharper focus. For suitable residual municipal solid waste (MSW) and commercial and industrial (C&I) waste, energy recovery provides an alternative to landfill after practical recovery options have been exhausted. Regulated wastes requiring controlled destruction, however, remain subject to separate treatment pathways and regulatory requirements.

Whether a waste can burn is not the test. Its classification, approved feedstock status and required treatment outcome determine the pathway.

From Residual Waste to Energy

Modern EfW facilities rely on relatively predictable feedstock. Residual MSW and C&I waste can provide sufficient calorific value to support stable combustion and energy generation after practical opportunities for material recovery have been considered.

Moisture content, composition, calorific value and contaminants can affect combustion performance, emissions and plant operation. EfW therefore has a defined role: recovering energy from suitable residual waste while supporting diversion from landfill.

Australia’s first large-scale operating EfW facility at Kwinana demonstrates that model in practice. Designed to process up to 460,000 tonnes of residual non-recyclable waste each year⁠, the facility exports approximately 38 MW of electricity to the grid enough to power more than 50,000 households⁠.

From Feedstock to Facility Approval

EfW and thermal treatment may both use combustion, but they operate within fundamentally different waste acceptance frameworks.

Facility approvals ultimately determine which waste streams an EfW plant can receive. Dedicated thermal treatment, by comparison, provides authorised destruction pathways for regulated materials including clinical, anatomical and pharmaceutical waste.

Biosecurity waste introduces another regulatory layer. Depending on the material and applicable biosecurity requirements, treatment may involve approved pathways such as incineration or autoclaving. The receiving facility must hold the appropriate DAFF Approved Arrangement for the treatment undertaken.

Western Australia provides a useful regulatory example. The WA EPA assessment of the East Rockingham Waste to Energy and Materials Recovery Facility⁠ demonstrates how permitted feedstocks are defined through a facility’s environmental assessment and approval framework.

When Destruction Is the Treatment Objective

For some regulated waste, the objective is not energy recovery but controlled destruction.

Clinical, anatomical and pharmaceutical waste can carry biological, chemical, security and handling requirements that extend beyond calorific value. Schedule 8 medicines provide a clear example: destruction requirements include controls around authorised personnel, witnessing and record keeping.

Biosecurity material is similarly governed by specific treatment requirements. Depending on the material, an approved pathway may include incineration or autoclaving under the applicable DAFF Approved Arrangement.

EfW and regulated thermal treatment are therefore complementary parts of Australia’s waste infrastructure, not interchangeable technologies.

Australia’s EfW Pipeline Is Taking Shape

Australia’s EfW pipeline represents significant infrastructure investment in alternatives to landfill for suitable residual waste. Across the major operating and development projects mapped below, publicly reported capital values already exceed $3.2 billion, before projects without comparable published investment figures are included.

That investment comes against a broader waste capacity challenge. In NSW, three major Sydney landfill sites are projected to reach capacity by 2030⁠, adding pressure to develop alternative pathways for residual waste that cannot reasonably be recovered or recycled.

Victoria provides another indication of the scale ahead, with 2.35 million tonnes per annum of capacity allocated across seven Waste to Energy Scheme cap licences.

The pipeline is substantial, but additional EfW capacity does not automatically create additional treatment capacity for regulated waste. Each facility remains governed by its environmental approvals, permitted feedstocks, licence conditions and waste acceptance requirements.

Different Waste, Different Treatment Outcomes

For developers, waste contractors, environmental consultants and facility operators, greater thermal capacity broadens Australia’s waste infrastructure but it does not remove the need to match each material with an authorised treatment pathway.

EfW can recover energy from suitable residual waste that would otherwise be disposed of, while dedicated thermal treatment remains necessary where regulated materials require controlled destruction, additional security or specific regulatory approvals.

Australia’s transition away from landfill will depend not on treating more waste in the same way, but on directing each waste stream to the right facility, under the right approval, for the right treatment outcome.