This project for San Diego County employs four 70-kilowatt Ingersoll-Rand microturbines which are fired on landfill gas with a methane content as low as 35 percent. The project began commercial operation in March 2008.
One microturbine is located in the closed Jamacha Landfill along with the project’s compression and gas cleanup equipment. The other three microturbines are located at the nearby Otay Water Reclamation Plant.
The project incorporates the following components:
A 200 standard cubic foot per minute blower/refrigeration skid which pressurizes the landfill gas and reduces moisture and other impurities in the raw landfill gas
Siloxane removal using activated carbon
Four 70 kW microturbines
A 0.3-mile landfill gas transmission pipeline
Switchgear and a step-up transformer
SCS-designed/fabricated/installed SCADA system, allowing Internet-based plant monitoring and control
SCS undertook this project on a turnkey basis. The total capacity of the project is 280 kW. The project was taken offline in the summer of 2011 after the expiration of the power purchase agreement.
SCS Engineers’ responsibilities: