Turbine Slzmg ts au initial procedure m designing cogenerating by evaluating various condition or the thermodynamics properties nt considered points. Determination of boiler fuel consumption have been applied to approach steam generation efficiency, Techno-economical analysis is based on the calculation ofiRR, NPV and PBP for 15 years cash flow. Optimum plan capacity should be invested with PBP no longer thaqn 5 years, highest IRR and NPV have been meet by simple Pascal Programing