Advanced Thermal Treatment

Advanced Thermal Treatment (ATT) refers to technologies that employ pyrolysis or gasification to process residual wastes. ATT processes will all produce a gas (usually for energy recovery) and a solid residue (slag, ash or char) which can often be recycled for secondary use. Some ATT facilities are also designed with mechanical preparation and sorting equipment to extract recyclables.

The gas produced through pyrolysis or gasification can be used in a number of ways. Most commonly the gas is burnt to produce steam, which is then used to generate electricity, or heat where there is demand local to the plant. It can also be used to fuel a dedicated gas engine or turbine or for co-firing purposes in an existing power plant.

UK’s potential for ATT

ATT has the potential to offer a clean, controllable and economical way of realising the energy value of waste, while its modular design permits a greater degree of flexibility with regard to location and scalability to suit local markets for the heat and electricity produced.

While the innovative nature of ATT technology means that the UK’s experience of ATT is relatively limited, the impact of the Landfill Directive and rising landfill tax coupled with the availability of double ROCs and opportunities for subsidy through the Renewable Heat Incentive will see significant renewed interest in ATT.

Walker Morris and ATT

Our Renewables, Energy and Resources Group comprises 25 specialist solicitors advising across the full range of issues affecting energy from waste projects from pre-planning to commercial delivery. Our clients include technology providers, waste management contractors, EPC Contractors and local authorities.

We advised leading ATT technology contractor, Energos, on the Glasgow Recycling and Renewable Energy Centre project, a £146m facility project using gasification technology, which reached financial close in summer 2012.

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