Figure 8
Two graphs are arranged side by side horizontally. On the left, the graph is labeled “Annual energy summary one of the house”. The vertical axis is labeled “Energy in kilowatt hours”, ranging from 0 to 12000 in increments of 3000. The horizontal axis is labeled “Battery capacity in kilowatt hours”, ranging from 0 to 10 in increments of 1. The legend shows “Annual imported energy” and “Annual exported energy”. Annual imported energy is high at about 9300 kilowatt hours. Both bars follow a declining trend. Annual imported energy is high at (0, 5800) and low at (10, 3500). Annual exported energy is high at (0, 9300) and low at (10, 6400). On the right, the graph is titled “Annual energy summary two of the house”. The vertical axis is labeled “Annual P V self-consumption slash self-sufficiency”, ranging from 0.0 to 1.0 in increments of 0.2. The right horizontal axis is labeled “Battery capacity in kilowatt hours”, ranging from 0 to 10 in increments of 1. The legend shows “Annual P V self-consumption” and “Annual P V self-sufficiency”. The annual P V self-consumption curve begins at (0, 0.38), (2, 042), (5, 0.48), (6.0, 0.50), and ends at (10, 0.58). The annual P V self-sufficiency curve begins at (0.0, 0.5) and ends at (10, 0.7). Both curves follow an inclining trend. Note: All numerical data values are approximated.Annual energy summary of the house with the large DHW and high electrical load profiles at different battery capacities (output capacity of the heating element: 2.5 kW, and threshold: 5 kW). Source: Authors' own work