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Solar power for water pump

 
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I have a water pump connected to my IBC tanks to water my garden. For now I'm using an extension cord to connect it to an outlet in my garage.

I want to hook it up to a solar panel, or if that's too expensive, add an outdoor power outlet close to the pump.

Is there a way to figure out how much solar power (and which panel) I would need to use this pump once or twice a week for 1 hour?

This is the pump I have: https://www.amazon.ca/dp/B002GQ99I0/ref=pe_3034960_236394800_TE_dp_1
 
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it probably draws about 10 amps at 110 volts , I'm guessing,
so that would be 1100 watts. usually starting a motor draws more power so lets say it draws 2200 watts at motor start up.

so I'm no expert but seems like a 2500 watt inverter will cover what you need.

looking forward to experts chiming in as I'm on a quest to learn much more about offered solar setups.
 
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A solar panel provides power when the sun shines on it ... whether you want to use the pump at that time or not. Not using it will waste the energy.

Rather than trying to add a battery and inverter to power this large pump, I would suggest getting a small 12V DC pump and hooking it up to a 50W solar panel. It will take time to water the garden, but over a day it should still get it done.
 
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I agree with The information in Bruce’s post.  To add some perspective:

I would get a sine wave inverter.  That adds $$$.

Consider that you may wish to add to your usage.   That mean a somewhat larger inverter.

If you already have a grid connection, considering up front price only, it will be less expensive to run an electrical line.

Now, I can be more than a little strange. I if I had the $$$, I would go solar.
 
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If I am not mistaken, we use an old battery that we keep charged with a battery charger for our setup like yours.

For our electric fence (similar application), we use an old battery with a small solar panel.
 
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Option 1 Direct Solar
Solar Panel
DC Pump (connected directly to the solar panel)
note: only works when the sun is shining

Option 2
Solar Panel
Battery
DC Pump (connected to battery)
note: will work day/night

Option 3
Solar Panel
Battery
Inverter
AC Pump (connected to inverter)
note: will work with any pump day/night

Lets expand on option 3,
AC Pump (the one you have that is listed as 375W (1/2HP). Run time = twice weekly, 1hrs each time
Inverter 400W, but then we have to think about surge power required for motor, so maybe 1000W
Battery 2000WHr
Solar Panel  160W (12V) or a regular 250W (24V)

Clarifying Questions:
Can you check and report how much watts your pump uses, it will affect the rest of the system
 
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