Rooftop Photovoltaic Power Plant and Electrochemical Storage: Trend and Perspectives for Residential Buildings

This paper investigates the profitability of a battery energy storage system coupled with a rooftop photovoltaic power plant. In particular, an ageing/cost model accounting for the capacitance fading of the battery is proposed. The model is deployed for proposing an optimal sizing of the battery storage and optimal operating conditions constraints with a smart-building scenario focused on the increase of the energy self-consumption. The results shown 20% of impact of the ageing on the overall profitability. Moreover, by changing the above constraints it is possible to keep the same profitability of the battery storage system and reducing its ageing of 45%.