This book describes the design of hybridization concept between solar tower and multiple gas turbines to produce electricity in a single power plant. In this case of study, we took the Solar Tower Jülich in Germany as our main subject. The main goals are to find the best design of the gas turbine’s exhaust piping system and to simulate the performance of the power plant and operation strategy of the gas turbines. The selection of the gas turbine was made based on the information available in the market. Exhaust mass flow rate and temperature of the gas turbine are the main important parameters for selecting the suitable one. Furthermore, the performance of the power plant was made based on real weather data in Europe with several categories described within this book. The operation strategy of the gas turbines was determined based on the required performance and limitations on the site.