Awapuni Landfill (Palmerston North)
Methane gas captured from the retired landfill generates electricity for the Awapuni Resource Recovery Centre and the nearby Wastewater Treatment Plant. Electricity is also generated from sludge digesters at the wastewater treatment plant. This uses a biological process to create methane gas from sewage sludge. This gas is then fed into the gas generator to produce more electricity. It has been claimed that over 75% of Palmerston North City Council's electricity can be generated from waste products in this way.
Awapuni Landfill closed in 2004.
Configuration 1 X 1 MW TBG620 engine CHP
Fuel: landfill gas
E/G supplier: Deutz
EPC: Energen Solutions
Quick facts: The City Council uses the bulk of the electricity output from this plant to power the Totara Road Wastewater Treatment Plant. $1.2mn of funding was supplied from the Austrian Government, which paid the City Council to reduce greenhouse gas emission from the landfill under its Kyoto Protocol agreement. Dificulties have since arisen (see web-links).