This irrigation system is active always as there is no dependency on electrical grid system for electricity.
Solar water pumping system is divided into two major groups, solar photovoltaic and solar thermal.
Many factors are influencing their performance, especially the influence of solar radiation, source of water, amount of water, duration of using system well characteristics and water storage conditions are of major importance.
Fig. 15 demonstrates schematic at automatic solar micro irrigation system. It has major components like solar PV, battery, microprocessor and micro irrigation system.
The electric motor driven water pumps can be commanded according to the soil moisture level using microprocessor. This system draws power from solar PV System.
This is an effective incorporation of one of solar energy application in agriculture.