Moretown Landfill: Gas to Energy
In 2008 Pennsylvania Power and Light (PPL) began operating a landfill gas to energy plant located at the
Moretown landfill. The plant has been running at nearly full
capacity, using the gas generated by decomposing trash to produce
electricity. Prior to 2008,the gas generated from the landfill was combusted using two flares.
The plant generates
approximately 3.2 MW of electricity at full capacity, which is
sufficient to power approximately 2500 homes. It currently
operates two Caterpillar engines (G3520) designed for landfill
gas at a flow rate of 550 scfm to each of the 2233 hp engine (picture
right). These are the same engines used at the NEWSVT/Waste USA landfill
in Coventry, Vermont.
Any excess gas not able
to be burned in the engines is combusted in a flare. PPL plans to add a third engine in 2011 or 2012.
of the Caterpillar G3520 engines
|Landfill gas is extracted from the landfill and directed to either the engines or the flare.
||Large blowers extract gas from the landfill. Balancing the flow at each extraction well ensures sufficient vacuum is maintained.