Utilization of energy storage systems charged from grid in buildings and comparison with solar systems

This study is motivated by the fact that a big portion of energy consumption between the hours of 17:00 and 22:00 when the global energy consumption reaches very high levels occurs at residential areas. The aim here is to discuss the applicability of energy storage systems in the multi-apartment complexes with energy management systems by providing experimental results. The results also include an economic comparison between solar systems and energy storage systems. Savings reflected on the monthly bills both from the solar energy and stored energy consumption based on various scenarios and the time for return of investment resulting from these savings are also provided. The findings point out that the energy storage systems can produce substantial amounts of savings both for the end users and the country overall by letting the apartments store the energy when it is cheaper during the day and use the stored energy when it is expensive.