In the case of a solar water pump, solar energy is converted into electricity and fed to a pump that circulates water. Solar water pumps enable you to move water from its remote source to where you need it, without access to power lines. … The most efficient way to use a solar pump is PV-direct, powering the pump directly off the solar panel, without using batteries. These types of units can be used in swimming pools, fountains and larger agricultural projects, and enables the customer to save on heft electricity bills to run their normal pumps.
It depends on the wattage of the water pump. But in general, you need 5 panels for a 100-watt water pump. If a panel produces 20 watts and you have a water pump of 300 watts, then you need 15 solar panels to run the pump. 1 hp is 745.7 Watts. Roof type solar panels (72 cells) go up to 300W at “ideal” conditions. So, at full sunshine, one would need 3 panels to run a 1 HP pump, but since conditions are rarely ideal, I would say that at least twice as many are needed (6 panels). Well, a water pump is mechanically operated to move water from inlet to the outlet. Therefore, it does consume electricity every time it is activated and Well, a water pump is mechanically operated to move water from inlet to the outlet. Therefore, it does consume electricity every time it is activated and deactivated.
This type of solar water pump system works very well in countries where there is unbroken sunshine like we have in South Africa, as long as the sun shines the pump operates, however in climates such as the UK and most of Europe, this system can produce somewhat erratic results, in most cases the panels are optimized to work only when the sun shines…