The step-height of the step power output was determined by the area of the solar panels and the power consumption of the facilities.
Figure 3 shows a daily variation characteristic of the step power output of the PV system as a function of solar radiation intensity.
The power output of the PV system showed a step-increase with the increase of solar radiation intensity (from A to E) in the morning and step-decrease with the decrease of solar radiation intensity (from F to J) in the afternoon.
The number of facilities operating depended on the output power of the PV system.
The maximum power output occurred during the period from 9:30-14:30.
The facilities were fully operational during this time.