Environmental and economic issues for the sizing of battery energy storage combined with renewable generation in an industrial facility

This paper analyzes the inclusion of a battery energy storage system equipping a photovoltaic generation system in an industrial facility. The main objective of the analysis is the evaluation of the economic and environmental implications related to the design choices. Besides the economic viability evaluation, two indices have been used for the analysis, namely the self-consumption rate and self-sufficiency rate, which allowed evaluating the ability of the system to reduce energy request to the grid. As an economic indicator, a modification of the levelized cost of use index is proposed and its application on a prosumer facility is consider so assessing also the benefit derived from selling energy to the grid. A total cost analysis has been carried out in order to discuss the optimal battery sizing solution.