It can support grid stability, shift energy from times of peak production to peak consumption, and reduce peak demand. Solar-plus-storage shifts some of the solar system's output to evening and night hours and provides other grid benefits. Much of NLR's current energy storage research is informing solar-plus-storage analysis. The results of the analysis showed that the use of energy storage increases leads to a reduction in energy. The decreasing costs of both PV and energy storage technologies have raised interest in the creation of combined “PV plus storage” power plants. In this paper, a general power distribution system of buildings, namely, PEDF (photovoltaics, energy storage, direct current, flexibility), is proposed to provide an effective solution from the demand side.