As, wind turbine rotor swept area, Aw, and the battery capacity, BC. A list of
factors and their levels is given in Table 6. The levels are 0 and 10,
for 1 and +1 levels of PV size; 17 and 37 for 1 and +1 levels of
wind turbine rotor swept area; and 10 and 50 for 1 and +1 levels
of battery capacity. Since the amount of wind energy in this area is
greater than the solar energy, the interval between the low and the
high level of the wind turbine rotor swept area is greater than the
interval of the low and the high level of the PV size. This means
that, at the optimum point wind turbine rotor swept area tends
to be greater than the PV size.