The design that Landfill Energy Systems (LES) supplied for the Phase I facility was duplicated and Phase II became a replica of the original plant. In addition to the design, LES supplied construction services, equipment procurement and commissioning services for the 3.2 MW facility. The plant is equipped with four CAT 3516 internal combustion engine generator sets and is located adjacent to the Phase I facility.

The Phase II generating plant began commercial operation in June of 1996. Both Phase I and Phase II are owned by Sonoma County, which sells the electricity generated to Pacific Gas & Electric. The two plants generate enough electricity to supply the power for approximately 7,000 homes and businesses.

Landfill Energy Systems provides all daily operations and maintenance services for both of the County's generating facilities.

Sufficient quantities of landfill gas have been identified to warrant a second expansion of the existing facilities. Two additional CAT 3516 engine generator sets will be added to increase the County's gross production to 8 MW. It is anticipated that the expansion will be completed by the end of 2002.