Resource Potential

Since the gas yields of closed landfills are decreasing, and the quantities of gas produced in the closed landfills are small compared to those of the three operating landfills, therefore the major source of landfill gas in Hong Kong is the strategic landfills. According to the renewable energy study report of EMSD, the peak gas production rate for each strategic landfill will probably be as follows:

  • 40,000 m3/hr in around 2019 for WENT Landfill;
  • 14,000 m3/hr in around 2012 for SENT Landfill; and
  • 21,000 m3/hr in around 2011 for NENT Landfill

It should be noted that with the implementation of the waste reduction plan, and with possible extension of operating life of existing strategic landfills, adjustments will need to be made to these earlier estimates.

The heat value of landfill gas is approximately 18 MJ/m3.

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