The main grid of Senegal is built by a transmission grid having an installed capacity of around 600MW and no connections to the power grids of neighbouring countries. Besides the main grid, there are two very small regional grids and 26 so-called “secondary grids” with only a few MW of installed capacity and peak load. There is potential and there exist already exploration plans for implementing power generation from renewable energies (mainly based on PV, wind and biomass) Because of the relative small size of the overall system, even a moderate use of the available renewable energy potential for electricity production would lead to fairly high renewable energy penetration levels, not only at regional but at system-wide level. Therefore, studies relating to active power balancing and frequency stability issues will be very important.