Type of CHP system: Extraction from landfill

Plant owner: Co-operating municipalities

Commissioned: (reconstructed):1998 (2003)

Status of plant: Commercial

Contractor details: Waukesha/ gas engine from Zantec; Caterpillar gas engines from ?

Power generation: Gas engine

Main fuel: Landfill gas

Methane content of the landfill gas is 50-60% (on average 55%)

Nominal capacities & efficiencies:

Gross electrical output: 1,3 MWe

Net electrical output: 1,2 MWe

Heat output: 2,6 MJ/s

How is plant controlled: Based on amount & quality of gas. In case of a gas pressure being too low  automatic control overrides the setpoint

Heat usage: Heating only

Energy usage: Heat I used for space heating and as process heat in waste water treatment plant

Plant description:

Landfill gas is extracted from a 20 ha landfill containing MSW and industrial waste at a rate of approx. 1200m3/hr.  After desulphurisation the landfill gas is combusted in two CHP units.

Engine:

Engine 1: Waukesha/Zantec 630 HK 16 cylinder 1500 rpm stationary engine, connected to a 0.69 MWe generator. Engine 2: Caterpillar G3512 12 cylinder 1500 rpm connected to a 0.625 MW generator.

Electricity sale info: Peak hours are Monday-Friday 07:00-23:00 hrs. Off-peak: all other hours

Investment costs not known

Data collected and quality assured by: Biomass Technology Group BV.

Contact person: Harrie Knoef