IGCC (.. Integrated Gasification Combined Cycle) plants for large scale power generation are becoming more and more attractive. For a gas turbine generating set to operate on Medium WM gas, it takes dedicated design of both engine and auxiliaries. A new combustion section, with extensive test support, has been developed. Alternative options to reduce inlet air flow and NOx emissions have been compared and appropriate solutions adopted. All auxiliaries systems have been modified according to the

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... gas fuel characteristics. Integration between plant systems has been carefully evaluated and a control system implemented in order to reach maximum reliability. The paper deals With different technical aspects of the engine as well as the plant design.