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296Abstract In off grid connected solar PV system available rooftop area on buildings is used for setting up solar power PV plant and DC power generated from solar photovoltaic SPV cells is converted to AC power by solar off grid inverter and is fed to the load during day time and meanwhile charges the battery through charge controller A 250W photovoltaic off grid power plant with the site receiving a good average solar radiation of 1762 kW h m2 year is proposed at Hyderabad In this study the solar PV plant performance and simulation analysis is formulated The various types of power losses are calculated using PVsyst software Simulation analysis of 250W solar power plant is carried out using PVSyst and simulation results of energy output of PV panel energy supplied to the user energy need of the user and unused energy are presented Keywords Electricity solar photovoltaic panel solar energy latitude Electric utility 1 INTRODUCTION Solar energy is a clean pollution free renewable source of energy Telangana state in India being located between 15 54 and 19 37 North latitude and the geographical location favors the harvesting and development of solar energy The yearly average solar radiation on horizontal surface of Hyderabad city Telangana state is 4 9 KWh m2 day at latitude of 17 5658 0N and longitude of 78 4512 0E 6 Most of cities and villages are facing severe electricity shortages 8 In order to meet the demand the existing roof space of buildings is utilized to promote off grid rooftop solar PV systems 9 2 TYPES OF SOLAR POWER PLANTS
The electricity generated by Solar Systems is DC in nature while most of our household loads require AC power This conversion takes place in real time with a very minimal time gap nowadays inverter efficiency goes up to 98 DC loads can be directly fed from the solar system and do not require an Inverter 5 Performance and Simulation of Off grid PV Plant using PVSYST PV syst software 10 http www pvsyst com 2015 is one of the simulation software developed to estimate the performance of the solar power plant It is able to import meteo data from many different sources as well as personnel data This software is capable of evaluating the performance of grid connected stand alone and pumping systems based on the specified module selection The program accurately predicts the system yields computed using detailed hourly simulation data 5 1 Balances and main results The maximum energy is generated in the month of April 34 94 KWh and minimum energy is in the month of September 23 79 KWh The energy output of PV panel is 345 64 KWh year is shown in Table 1