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Solar energy resources are the highest in rural desert areas in Oman so that Photovoltaic (PV) system could represent a suitable choice for electricity generation as stand-alone power system. In this research a 9 kW solar PV system have been designed to supply health clinic in Oman. The average daily load demand is 24.307 kWh/day and details loads are listed. The energy that is generated by the PV system has been estimated using real weather data for Sohar-Oman. Basic principles of designing a quality PV system have been used to design the system. HOMER software is used to analysis and estimate the life cycle of the PV system. The cost of PV system energy is calculated with different sizes for PV, battery and converter. The results indicate that the solar energy utilization is an attractive option with initial cost, net present cost of the system, and energy cost are 96,470 $, 3046 $/year and 0.418 $/kWh, respectively, in comparison with diesel generator operating cost 0.558 $/kWh. We conclude that using the PV system for these types of applications in Oman is justified on technical and economic grounds.