An Economic Strategy for Energy Management of a Residential Grid-Connected PV-Battery System.

Grid connected renewable energy systems guarantee the sustainability and reliability of energy production processes for the maximum possible period. This paper proposes the study of three different energy management strategies for a grid connected energy systems. The first strategy use the grid only, while the second employ the grid with photovoltaic (PV) energy source, and the third utilizes the grid connected PV-battery system, which it based on the strategy of buying the electricity at night only from the public grid company. The results deal that the proposed night buy strategy for grid-connected PV-Battery system offers the best performance with the highest benefits during the whole year, compared to other two strategies (only grid and only PV-grid).