2 minute read
TuasOne - the latest and most land-efficient waste-to-energy plant in Singapore
The TuasOne Waste-To-Energy Plant (TuasOne) was developed under the Public-Private-Partnership framework to provide waste incineration services to the National Environment Agency (NEA). This is Singapore’s sixth Waste-To-Energy (WTE) plant and the second that was developed under a Design, Build, Own and Operate (DBOO) model. The plant commenced initial operations in December 2021 and has steadily increased its operating capacity since. Keppel Seghers Tuas Waste-ToEnergy Plant (KSTP) was the first WTE plant developed under a Design, Build, Own and Operate (DBOO) model. It was commissioned in 2009. TuasOne has recently appointed Mitsubishi Heavy Industries Environmental & Chemical Engineering ECO Creation Singapore Co Ltd (MHIEC ECO Creation) as its longterm operations and maintenance contractor. Prior to the appointment of MHIEC ECO Creation, Mitsubishi Heavy Industries Asia Pacific Pte Ltd (MHIAP) had been operating the plant.
Key highlights of TuasOne
• The plant can incinerate 3,600 tonnes of waste and generate 120 MW of electricity daily. • It is located on 4.8 hectares of land and is the most land-efficient WTE plant in Singapore to-date. • The plant is designed for higher heat recovery from waste incineration and higher electrical power generation efficiency. TuasOne will provide waste incineration services for a minimum period of 25 years to help Singapore meet its long-term waste management needs, while recovering energy from waste. The energy generated from incineration
Front façade of TuasOne Waste-to-Energy Plant (TuasOne).
Rear-end loader refuse truck unloading refuse at the reception area at TuasOne.
is enough to meet the electricity demand of 240,000 4-room HDB flats. Incineration also helps to reduce the volume of waste that is converted to ash, by up to 90%. With the commencement of operations at TuasOne, which was developed to replace the Tuas Incineration Plant (TIP), while catering for growth in Singapore’s WTE capacity, NEA has decommissioned TIP after its 36 years of service.
Decommissioning of Tuas Incineration Plant
Tuas Incineration Plant (TIP), Singapore’s second WTE plant, was built on 6.3 hectares of reclaimed land, at an estimated cost of SGD 200 million. TIP has treated approximately 18 million tonnes of general waste since it started operations in 1986. The heat recovered from the waste incineration process was used to generate approximately 6,400,000 MWh of electricity, the equivalent amount of electricity used by about 40,000 4-room HDB flats over TIP’s 36-year lifespan. Although TIP has been decommissioned, NEA is currently exploring the possibility of repurposing parts of its infrastructure for other waste management activities.
Images on TuasOne: MHIAP Images on TIP: NEA
The incineration ash storage area at TuasOne. The ash is transported to Tuas Marine Transfer Station daily, for disposal at Semakau Landfill.
TIP in 2000.
The waste bunker at TIP during plant operation (left) and after decommissioning (right).
