The largest quantity of fossil fuel is used for power generating process nowadays, which release enormous of carbon dioxide and other defilement to the environment. More significantly, fossil fuel will disappear from our planet in the near future. In order to save our environment together with develop our civilization sustainably and less harm to living things, humans are exploring new source of substitute clean energy and solar energy is renewable which can serve as a sustainable energy

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... Moreover , it will significantly become a crucial part of the future energy structure. Because of the advantages of flat radial Fresnel lens such as small volume, light-weight, mass production with low cost, it recently have been one of the best choices in the field of concentrated solar energy applications. This research aims to design and build the flat radial Fresnel lens collector with solar tracking system using in high temperature solar energy thermal system. The 9 pieces of 40×40 cm 2 with 230 mm focus length of Fresnel lens are used for the sunlight concentration to the focal point. The temperature at the focal points are measured by the data logger and Programmable Logic Controller (PLC) is used for controlling stepping motors in the sun tracking system. The working fluid used in the experiments was water has a volume of 30 liters and flow rate of 3 l/min. beside, water circulation system. The result of the experiments which collected between 11.00 A.M. -02.00 P.M. Beginning, the average temperature which measured at 11.00 A.M. is 24°C and the average maximum temperature is 42°C at 2.00 P.M., which is able to generate the thermal power at 2,240 kJ. The rate of heat transposition is at 207.41 W/h and average efficiency is equal to 6.2% at average solar radiation value is 978 W/m 2 during 3 hrs. Operating time at the average atmospheric temperature of 21°C. The performance of solar concentrator which depend on many factors such as reflection of solar intensity, sun beam, mechanism and controller of the sun tracking accuracy of sun path.