How many solar panels do I need to run a pump?

The number of solar panels needed to run a pump depends on the type of pump you have. There are two main classes of pumps: Pumps Designed for Solar: These pumps are slightly more efficient and can run on anywhere from 200 watts (two 100-watt panels) to around 800 or 1,200 watts of power.

How much power does a solar pump use?

But if you run the pump for 15 minutes twice an hour, power use goes up to 1000 watts. You do not have to worry too much about the calculations though. As long as the inverter can handle the surge watts, you should be able to run the pump without trouble. Of course the rest of your solar system must be of sufficient size too.

How many watts does an inverter need?

If you have a 1.5 HP pump, its running watts is going to be around 1500 watts, more or less. However, pump motors need a surge of power to start up. In a 1.5 AC pump this is about 3000 watts. Add 25% to 3000 watts and you get 3750 watts. Round that off to 4000, and that is the inverter you need.

How to choose a solar pump inverter?

Start by picking the right spot for your solar pump inverter carefully. It should be easy to get to, clear of blockages, and sheltered from bad weather. Make sure there’s enough room for the inverter, solar panels, and the rest of the system. Good grounding and wiring keep your solar pump system safe and working right.

How much solar power does an AC pump need?

Here’s some estimates on solar power for an AC pump – this varies depending on what kind of system you get but its a start! For a 1/2 horsepower pump, you’ll need about eight solar panels or 800 watts of power.

Can a 500W inverter run a well pump?

As long as the inverter can handle the surge watts, you should be able to run the pump without trouble. Of course the rest of your solar system must be of sufficient size too. Does this mean you should get a 500W inverter? No, because the well pump still needs 3000 watts approximately during startup.