Mini grids can economically supply electricity to people in areas that the main grid is unlikely to reach soon. Mini grids can be quickly deployed and are increasingly price-competitive against traditional sources of energy. They can attract private financing and operate without subsidies when allowed to charge cost-recovery tariffs.
Moreover, the arrival of the main grid does not mean that the investment in mini grids will be wasted: their generation and distribution assets can generally be reused in an integrated system. The key is to define—in advance—technical standards and commercial options for integration once the main grid arrives.