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This thesis gives a full look at how to make the GE Frame 9E gas turbines at the Bazian Power Plant in the Kurdistan Region of Iraq more efficient.  The study looks into three main ways to optimize: using a combined cycle, regeneration methods, and cooling devices for the air that comes in.  This study compares various methods in a systematic way by looking at their thermodynamic properties, technical feasibility, and economic viability. It then comes up with an integrated optimization strategy that fits the unique needs of the Bazian facility. The study shows that using a combined cycle can boost efficiency the greatest. It could raise the overall plants efficiency from 34–37% to 52–56% and add 280–320 MW of capacity without needing more fuel.  But this method needs a lot of money ($200–300 million) and a lot of changes to the current plant.  Regeneration improves efficiency by 5 to 7 percentage points, but it makes it harder to integrate with the existing turbines because it needs less capital.  Inlet air cooling, especially evaporative cooling, is a very cost-effective way to deal with the hot, dry climate in Kurdistan. It can boost power generation by 7–14% in the summer months with only a small investment ($5–10 million for evaporative systems). The thesis suggests a phased implementation strategy based on these results. This would start with evaporative inlet air cooling as a short-term solution (1–2 years), then move on to combined cycle conversion for part of the plant in the medium term (3–5 years), and finally plant-wide optimization in the long term (5+ years).  This method strikes a balance between short-term performance advantages and long-term efficiency gains while keeping capital costs and implementation complexity in check.  The study adds to the field of power plant optimization by giving an organized way to look at and put into action ways to make current gas turbine facilities more efficient. This is especially useful for plants that are located in hot, dry areas where electricity demand is rising.