The emulated inertia controller (EIC) is designed to emulate the inertia to the power electronic inverter. The EIC helps to integrate the large-scale PV into the grid without affecting the stability. This paper demonstrates the design of EIC control. This paper the highlights the comparison of EIC with the traditional synchronous generator (SG). The frequency response of both EIC and SG are compared for different scenarios. © Published under licence by IOP Publishing Ltd.