Size optimization of stand-alone photovoltaic system under local weather conditions in India

In this paper we scrutinized optimal sizing of solar array and battery in a stand-alone photovoltaic (SPV) system, under the conditions of a fixed tilt angle and continuous size variations of solar array and battery. Calculations and results for distinctive size combinations of solar array and battery are based on the loss of power supply probability (LPSP) of the SPV system. At a particular load demand and the desired LPSP, the optimal size combination is achieved at the minimum system cost. Our case study shows the procedure of the size optimization of the SPV system in Indian weather conditions.