— In this proposed methodology paper, a system, including a detailed PV generator, dc/ac voltage source converter to act as an APF and dc/dc boost converter to extract maximum radiation power using maximum power point tracking, is presented. The instantaneous power theory is applied to design the PV-APF controller, which shows reliable performances. The MATLAB or Simpower System software has proved that the combined system can simultaneously inject maximum power from a PV unit and shunt APF to compensate load current harmonics, load reactive power demand, current unbalance, and load neutral current. All of these functions may be accomplished either individually or simultaneously. With such a control, the combination of grid-interfacing inverter the harmonic current drawn by nonlinear loads. We can use various converters like cuck converter, zeta converter in place of a boost converter, inverter also.