Every equipment, installation, part and sensor consisting the power plant system has the desired lifetime.
For the smooth operation of the power plant, they should be regularly alternated and maintained based on the life time of devices.

In addition, the PV system is operated exposed outside for a long time.
So there are many invisible natural setbacks for the long-time operation.
By eliminating these setbacks through the regular examination and maintenance in advance, we can expect the prevention of decline of the power supply of the system and the elongation of the lifetime.
As a result, the efficiency of stable operation of the power plant will be maximized.