Micro grid is a latest concept for upcoming energy distribution system that enables, renewable energy integration. It generally combination of multiple distributed generations (DG's), that are usually connected to the grid through power inverters. During the islanding operation (autonomous mode) of grid, important task are to share the load demand among multiple parallel connected inverters proportionately, and maintains the voltage and frequency stabilities. There are a variety of methods implements for an accurate power sharing in a single phase system when multiple DG's are connected in parallel with utility grid through power inverters. This paper reviews various control techniques for power sharing in micro grid. The control methods are divided into two parts, which are with communication and without communication. Along with, a various control techniques are compared in terms of their respective advantages and disadvantages.