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Solar pump

  1. Feb 13, 2013 #1
    hello PFs,

    I am working on solar pump but unfortunately i am new to this. Confused which solar panel is best to buy for 1 HP pump. And even what type of pump to use. Want to make it as efficient and cheap as possible.

  2. jcsd
  3. Feb 13, 2013 #2


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    A 1HP pump is pretty substantial.
    You would need about 2000 watts steady state and about triple that for the starting surge. Noonday solar power is about 1000 watts/square meter and cell efficiency is about 10%, so you would need 60 square meters of solar cells, almost a solar field, to power your pump.
    Afaik, the cost of solar cells is about a dollar a watt, maybe twice that installed.
    So your installation pencils out around $10,000+/-. Is that cheap enough to be worth it?
  4. Feb 23, 2013 #3
    thank you for your interest in the matter etudiant,

    I am from india and i guess noonday solar power will be more..
    One more thing i am confused, u said the cell efficiency is 10% only, what does that mean? I heard solar cell is most efficient way of converting into electricity.

    and how do this people pumps water via using such a small solar cell?
    http://www.solarpumps.com/files/QuickSiteImages/redcows_and_unit_pic_cropped.jpg [Broken]

    sorry if i am wrong anywhere coz i am new to this solar pumping thing.
    Last edited by a moderator: May 6, 2017
  5. Feb 23, 2013 #4


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    The 1000 watt/sq m is with the sun directly overhead, even in India.
    The solar cell efficiency has been boosted to well over 50% in the lab, but commercially available product is nowhere near that. The 10% assumed is a good place to start from, it may be a bit more, but not enough to matter.
    The solar pump setups you show are much smaller than the 1hp design the OP requested.
  6. Feb 23, 2013 #5
    do you know any other way of pumping through solar without using solar cell? will solar concentrator work?
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