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Solaredge inverter choices. 8 - SE7600 vs 6 - SE10k vs 5 SE11.4kw

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  • Solaredge inverter choices. 8 - SE7600 vs 6 - SE10k vs 5 SE11.4kw

    I'm going to put up a 70kw DC array with 200 350w panels. I'm limited on net metering to 60.8kw AC. (can build larger, but anything over 60.8 is paid out at avoided fuel cost).

    If I use 8 7.6kw inverters, I can wire 2 strings directly into the inverter itself and avoid any dc combiner boxes.

    If I use 5 11.4kw inverters I can save $1500 on inverter cost, but give up a fair amount of that on combiner boxes.


    In my mind, I'm thinking avoiding the combiner boxes would be the easiest route. Is my logic flawed?

  • #2
    What is your consumption?
    Do you have 3 phase power?
    OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNH

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    • #3
      Over the last 5 years, consumption has ranged between 85-135kwh depending upon weather. It is a livestock farm, vast majority of the consumption is ventilation that is directly correlated to weather.

      Unfortunately only single phase on this farm. 240v 400amp service.

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      • #4
        Well you. Could request a three phase service.
        otherwise 5 X SE11.4 is the way to go.
        OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNH

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        • #5
          3 phase is out of the question. It is miles away.

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          • #6
            I just looked at the specs again. I originally thought the 10k and 11.4k had terminal blocks for only 2 strings. I didn't realize it had room for 3.

            So so if I go with 3 strings per inverter, is 2 strings of 15 and one 10 preferable to 2-13's and a 14?

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            • #7
              Originally posted by nhermanson View Post
              So so if I go with 3 strings per inverter, is 2 strings of 15 and one 10 preferable to 2-13's and a 14?
              Doesn't matter
              OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNH

              Comment

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