The solar water pumping system is a stand-alone system operating on power generated using solar PV ( photovoltaic) system. The power generated by solar cells is used for operating DC surface centrifugal mono-block pumpset for lifting water from a bore or a open well or water reservoir for minor irrigation and drinking water purposes. The system schematic is shown in the figure below. The system requires a shadow-free area for installation of the Solar Panel
1 HP
This system is provided with a 900 W solar PV panel (12 nos. X 75 Wp) and a 1 HP centrifugal DC mono-block or AC submersible with an inverter. The average water delivery of 1 HP solar pump will be around 70,000 liters per day, for a head of 10 metres. The size of suction and delivery lines is 2.5 inches (62.5 mm).
2 HP
This system is provided with a 1800 W solar PV panel (24 nos. X 75 Wp) and a 2 HP centrifugal DC mono-block or AC submersible with an inverter. The average water delivery of 1 HP solar pump will be around 1,40,000 liters per day, for a head of 10 metres. The size of suction and delivery lines is 2.5 inches (62.5 mm).
Advantages of solar pump sets


Technical details of a typical 2 HP SPV pump :
1 HP | 2 HP | |
Solar PV panels | 900 Wp comprising of 75 Wp modules | 1800 Wp comprising of 75 Wp modules |
Motor pumpset type | 1 hp centrifugal DC monoblock/ AC submersible with inverter | 2 hp centrifugal DC monoblock/ AC submersible with inverter |
Operating voltage | 60V DC (nominal) | 60V DC (nominal) |
Maximum suction head | 6.0 meters | 6.0 meters |
Maximum dynamic head | 10.0 meters | 10.0 meters |
Bore well size | 150 mm dia. | 150 mm dia. |
Required shadow free area | 100 sq.m. | 100 sq.m. |
Module mounting structure | MS hot dipped galvanized | MS hot dipped galvanized |
Facilities provided in the panel | Seasonal tilt angle adjustment 3 times manual tracking facilities (east- south – west) in morning, noon and afternoon. | Seasonal tilt angle adjustment 3 times manual tracking facilities (east- south – west) in morning, noon and afternoon. |
Average discharge of pump | SPV pump set will have a capacity to give a discharge of 70,000 liters on a clear sunny day (approx.) subject to variation due to solar isolation and water table condition. This discharge will be suitable for irrigating 2-3 acres of land. | SPV pump set will have a capacity to discharge of 1,40,000 liters on a clear sunny day (approx.) subject to variation due to solar isolation and water table condition. This discharge will be suitable for irrigating 4-5 acres of land. |