diy solar

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  • Post in thread: professionally installed system energy production curve flat in mid-afternoon

    You are right. The bar graph has bars going about to approx. ~0.8 kW with 15 min bar widths, but it looks like the total over the whole hour was 3.4 kW, exactly as you say. Agree that it seems like a misnomer to have been billed as a 4.48kW system. The guarantee that Sigora makes is with...
  • Post in thread: professionally installed system energy production curve flat in mid-afternoon

    Yup. I came up with about 4.9 effective average hours for the year, which comes to 2.99 kW system. I also found that the sunlight average hours for Sept-Oct basically comes up to 4.9 as well. So, in other words, this ~50 day stretch should be almost exactly representative of what I should...
  • Post in thread: professionally installed system energy production curve flat in mid-afternoon

    Hey y'all, First of all, sorry to say that I am super lame and I didn't install my own system. I am just looking for a forum to post my question so I can see what the possible explanations are before I complain to the installer about it. If this is too off-topic, or I should ask somewhere...
  • Post in thread: professionally installed system energy production curve flat in mid-afternoon

    Thanks for the quick replies! 4.48 kW is the rating of the system. I have fourteen 320W panels, so the panels make a total of 4.48 kW. The inverter is rated to 4.48 kW, according to my contract, but I don't know without looking at it at home what type it is. I will reply again when I do...
  • Post in thread: professionally installed system energy production curve flat in mid-afternoon

    Thank you. I agree that's what it looks like. So, my question is now: if I am getting clipping in sunny September days does it mean that the inverter is *too* undersized? Or is what I'm seeing sort of typical, and I'm not missing out on that much energy? Also, FYI, I forgot to visually check my...
  • Post in thread: professionally installed system energy production curve flat in mid-afternoon

    Thanks for the explanation. Yeah, I clicked over at SAM and it looked like it was too much work to figure out right now, but I will check into it later for sure. Just realized I could probably look up my inverter situation on the enphase app, and I can. Looks like I have 14 IQ7 microinverters...
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