1.4bn Contract for SITA to Process London Waste at Severnside Waste to Energy Plant

A consortium led by SITA UK has secured a 25 year contract with 1.4 billion to treat the West London Waste Authoritys residual waste at its 34 MW Severnside waste to energy facility in South Gloucestershire.

A consortium led by SITA UK has secured a 25 year contract with £1.4 billion to treat the West London Waste Authority’s residual waste at its 34 MW Severnside waste to energy facility in South Gloucestershire.

SITA UK – a pact of SUEZ ENVIRONNEMENT (Paris: SEV, Brussels: SEVB) – explained that the Severnside Energy Recovery Centre (SERC) has already secured planning permission.

Under the contract SITA UK, along with its partners Scottish Widows Investment Partners and the ITOCHU Corporation, will design, finance, build and operate infrastructure to manage up to 300,000 tonnes of residual municipal waste every year.

The Public Private Partnership (PPP) agreement will see the residual waste generated by 1.6 million people living in the London boroughs of Brent, Ealing, Harrow, Hillingdon, Hounslow and Richmond-upon-Thames, which cannot be recycled, will be transported by rail to the SERC.

The company claimed that this solution will enable the West London Waste Authority to divert 96 per cent of its waste from landfill and is expected to save two million tonnes of CO2 over the duration of the contract.

Over its duration, SITA said that the contract is worth £1.4 billion in total and £244 million will be invested into new infrastructure.

From January 2014, SITA will take over the operation of the two rail-linked waste transfer stations at Transport Avenue and Victoria Road. The company said that both will be substantially modernised as part of the investment programme.

"Now that the contract has been signed, we can start our substantial investment programme immediately and will begin construction at Severnside within the next month,” commented Jean-Louis Chaussade, CEO of SUEZ ENVIRONNEMENT.

Councillor Bassam Mahfouz, chair of WLWA, said: “A large proportion of our household waste can be recycled, and this contract will support west London’s commitment to recycle at least 50% by 2020.”


Switzerland based waste to energy technology supplier, Hitachi Zosen Inova (HZI) is due to begin construction of the energy recovery facility in South Gloucestershire in December this year.

According to HZI the facility will be the its seventh turnkey plant contract in the UK over the last seven years.

The company explained that the plant will feature thermal waste treatment technologies in DyNOR and LEAP, the new Low Excess Air Process. In response to tightened emission requirements, HZI said that the DyNOR system is able to reduce the nitrogen dioxide emissions to 150 mg/Nm3 at minimal ammonia slip and well below current EU limits.

With LEAP the high efficiency of combustion is said to be further increased while the CO and NOx emissions are still reduced.

The facility will feature two stoker-type waste incinerators each with a 590 tonne/day capacity to give a total capacity of 1180 tonnes/day, and is expected to be operational in 2018.

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