Solar Appliances
Solar AC, geyser, lights, pumps and fans: how to power each one.
Solar appliances · Water pumps
Solar Water Pump Price in Karachi
A pump uses power only when it runs, and it runs best in the day. That makes water pumping a good fit for solar, if the pump matches the job.
- ✓ AC and DC pumps
- ✓ Head and flow sums
- ✓ Tanks and controllers
Why solar suits pumps
A pump fills a tank. The tank stores the water, so the pump does not need to run at night. That means no battery is needed, which is a big saving over most solar uses.
Pumping also matches the sun. You want the most water when it is hot and sunny, and that is when the panels give the most power.
Pump prices we quote
Pump only. Panels, controller, pipe and tank are separate.
| Item | Detail | Price (PKR) |
|---|---|---|
| Solar water pump, 1 HP class | Submersible or surface, depending on the well | Contact us for latest prices |
| Solar water pump, 2 HP class | Submersible or surface, depending on the well | Contact us for latest prices |
Prices change with the exchange rate and stock. Contact us for the latest prices.
Types of solar pump
Which one fits depends on your water source.
| Type | How it works | Good for |
|---|---|---|
| DC pump | Runs straight from panels through a controller | Small wells, gardens, tanks |
| AC pump with a solar drive | A solar pump drive runs a standard AC pump | Larger flows, easy to service |
| AC pump on a hybrid system | Runs on the home inverter | Homes that already have solar |
| Submersible | Sits in the well or bore | Deep water |
| Surface | Sits above ground | Shallow tanks and storage |
Sizing from flow and head
An illustrative sum. Get the real head and flow from your well and your tank.
- 1
Find the total head
This is the vertical lift from the water level to the tank outlet, plus an allowance for pipe friction. Say 30 m.
- 2
Find the flow you want
Say 5 cubic metres an hour.
- 3
Compute the hydraulic power
The rule of thumb is flow times head times 2.725. That is 5 times 30 times 2.725, or about 409 W of water power.
- 4
Allow for pump losses
A small pump may be 40 percent efficient overall. 409 divided by 0.4 is about 1,020 W of electric power.
- 5
Size the panels
Add a margin for heat and dust. Around 1.5 kW of panels, so three 585 W panels, suits this case.
Checks before you buy
- Dry-run protection. The pump must stop when the water runs out. Ask for a level switch or a dry-run cut-off.
- Pump curve. Ask for the flow at your head, not the maximum figure on the box.
- Water quality. Sand, salt or hard water wear a pump. Ask about materials.
- Controller. Check that the drive handles the start-up and the sun's changes.
- Tank size. A larger tank lets a smaller pump do the job over the day.
Check the well before the pump
The water level, the yield and the depth decide what pump fits. A pump larger than the well can supply runs dry and burns out. Measure the water level and ask how fast the well refills before you choose.
FAQs
Questions people ask us
Short answers. For your own property, send us your electricity bill and roof details.
Ask on WhatsAppUsually not. The pump fills a tank in the day and the tank stores the water.
It depends on the flow and the total head. Multiply them, and ask us to check the sum.
Yes, an AC pump can run on a hybrid inverter if the surge is within its rating.
DC pumps are simple and good for small jobs. AC pumps on a solar drive suit larger flows and are easy to service.
It depends on the pump, the well and the drive. Send the details and we will quote.
Related pages
Solar Geysers
Solar water heaters: how they work, tank sizes and when they pay off.
Inverter Sizes
Inverter sizes from 1 kW to 10 kW and what each can run.
Charge Controllers
MPPT and PWM charge controllers, with the sums to size the right amp rating.
Planning a solar pump?
Tell us the well depth, the tank height and the flow you want. We will size it and give a free estimate.