Small scale ESS for LV prosumers: An economic feasibility and sensitivity analysis

In a framework of fast evolving power systems in terms of structure and operation, the implementation of energy storage systems (ESSs) is a key element. The aim of the present work is to identify economic conditions for the effective application of ESSs for LV residential prosumers, i.e. consumers with local power generation. An economic feasibility and sensitivity analysis is performed. Three cases are considered, basing on current Italian incentive policy. Each case study is analyzed in two conditions in reference to the derating and replacement of ESS. The comparison of the two conditions gives a measure of the impact of technology on economic effectiveness of its application. Another analysis is reported, based on introduction of support policies as the German ones. Results show that implementation of a residential ESS could be advantageous in case of introduction of suitable support policies or decreasing ESS costs.