WorleyParsons has been contracted by the Klickitat Public Utilities District to design a nominal 26 MWe, 2×2×1 Combined Cycle Plant in order to expand the District’s existing landfill gas (LFG) power generation facility. The combined cycle plant is unique in that it will run only on LFG and will employ a state-of-the-art on-site regenerable LFG treatment and compression system. For the design of the LFG treatment system all current technologies were screened and the most economical ones chosen for implementation. The heat rate of the plant is calculated to be 8,245 Btu/kW-hr (LHV) gross and 9,260 Btu/kW-hr (LHV) net, at 90 °F ambient temperature and 1500 ft elevation.

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