Up and Down-Regulation of Residential BESS for Local Flexibility in France

This study deals with an application of residential Battery Energy Storage Systems (BESSs) to ensure flexibility Ancillary Services (ASs) of electrical Distribution Grid (DG), in particular using of the up and down-regulation. This AS is implemented by the aggregator, which reserves the entire or the part of prosumer's energy storage and manages it by charging (Up) or discharging (Down) in accordance with a DG flexibility call signal with corresponding original and presented previously methodology. It was applied for one-year large-scale operational and economical evaluation based on the real French prosumer's data. The technical analysis shows that the use of residential BESS is much more efficient with AS participation that without for considered case. The economic analysis presents the significant decrease of prosumer's electrical energy price due to mixed up and down participation for all considered possible operation cases, which accelerates prosumer's return on investment. From another side, this AS is the promising and relatively easy deploying source of additional local flexibility for DG.