Hybrid mini-grids are becoming a popular solution in order to provide electricity in rural areas of developing countries. The number of these projects around the world increases every year and their huge potential market is attracting many private companies and public investors. These systems use the availability of local resources, as biomass or solar radiation, to generate electricity at low price for the customers and their economic convenience is due to low operational costs compared to the traditional systems powered by fossil fuels. The aim of this thesis is to design a mini-grid in a selected community called Toudgha El Oulia, situated in the central-eastern side of Morocco.