In this work, a four-switch Voltage Source Inverter (VSI) is considered for highly efficient and low power solar PV grid-connected applications to optimize the cost and size of the PV system. The Perturb and Observe (P&O) Maximum Power Point Tracking (MPPT) technique is used to track Maximum Power Point (MPP) of solar PV. This technique is simple, easy to design, and less complexity. By using two-leg four-switch inverter (B-4 inverter) the cost of the PV system can be reduced compared to six switch inverters, as the cost of inverter mainly depends on the cost of semiconductor switches. The boost converter is utilized to step-up the PV voltage. This work is to analyze the Space Vector Pulse Width Modulation Technique (SVPWM) in two-leg B-4 inverter topology to reduce the ripples at time of switching thereby reducing the Total Harmonic Distortion (THD) and reducing the inverter switching and conducting losses at high pulse width modulation frequency. Moreover, SVPWM technique improves the utilization factor of B-4 inverter. The results are analyzed by using MATLAB Simulink window. © 2020, Springer Nature Singapore Pte Ltd.