But when these systems are not available there still is a good system for delivering water, the solar pump. These pumps use solar energy as their power source. The solar energy is picked up by one or more solar panels. These panels or solar modules come in sizes from 1.4 watts to 300 watts. The panels are placed to pick up the maximum sunrays or can be placed on a tracker that follows the sun.
Pumps now come in different sizes and designs.
There are floating pumps, transfer pumps, shallow well and submersible pumps. The advantage to solar energy is that it is environmentally friendly, and it is free. The down side is that it is produced only when the sun shines. There are a couple of ways to compensate for those cloudy days without sunshine. Batteries can be put in the systems so that the sun charges the batteries.