This book contains the study of power quality assessment on grid connected PV system. To accomplish this, 1kWp grid connected solar PV system is modelled and simulated in Matlab/Simulink. The historical environmental data collected over a number of years are used to estimate the profile of the output power of the PV system. The P&O MPPT algorithm is implemented in DC/DC boost converter to enable PV arrays to operate at MPP. Possible operational problems that might arise due to installing PV systems are identified and different strategies that can mitigate these problems are studied in detail....