Landfill Gas and LFGE – ALZA Corporation, Mountain View, California

SCS Engineers landfill gas LFGEThe ALZA LFGTE project consists of three 1-megawatt landfill gas-fired reciprocating engine-generators, a 1.5-mile landfill gas transmission pipeline and a landfill gas pressurization/conditioning skid. The engine-generators were installed at three separate buildings and deferred the purchase of retail power from the local utility. Waste heat from the engine-generators is used to supply hot water to the buildings. The project began commercial operation in March 2006.

The engine-generators will be interconnected to Pacific Gas and Electric Company (PG&E) for the purpose of securing standby and supplementary power.

SCS’s scope of services for this project includes:

  • Process, civil, electrical, controls and mechanical engineering for the entire project

  • Construction of the landfill gas transmission pipeline

  • Specifications for procurement of major equipment

  • Air permits and other environmental approvals

  • Assistance in pipeline right-of-way acquisition and in negotiation of a landfill gas purchase agreement

  • Design and installation of a multi-plant SCADA system using SCS’s proprietary iSCADA technology

  • Preparation of grant applications that secured $1.9 million in Self-Generation Incentive Program funds

SCS undertook the power plan component on a design-only basis and the pipeline on a turnkey basis. The total capacity of the project is 2.9 MW.

SCS Engineers’ responsibilities:

  • Feasibility Study
  • Grantsmanship
  • Environmental Permits
  • Interconnection Application
  • Detailed Design
  • Construction QA/QC
  • Construction
  • Plant Startup
  • SCADA System