This system is just over 2 years old. This picture shows the panel production for the past year and I was wondering if it is normal. 7 of the 24 panels produced 35% less than the rest and 1 panel produced almost 70% less. Is there supposed to be that much difference between panels? This only started happening in the past year. The first year every panel produced about the same amount. If this is abnormal, any ideas of what is wrong and how to fix it? Thank You.
Panel Production
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The problem is likely either additional shading grown up recently, or bad panels. Try checking
if the poor producers still hit the same peak power as other panels at the best sun time of day.
If they do the panels are probably good but oft shaded. If they never do, suspect the panel or
possibly the micro inverter. Bruce Roe -
There isn't any shade around the panels and the production gap is consistent throughout the day. I don't have micro inverters, but each panel does have an optimizer. Could it be bad optimizers? It seems like 8 panels going bad out of 24 is a pretty bad failure rate. Could loose connections or something cause it? Thank You.Comment
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It could be a reporting problem. Do you have any way to independently confirm the reported production numbers? Would be a good place to start before tearing into the hardware.Comment
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I don't have a way of checking on the individual panel output, but I have a sense energy monitor that can confirm the real time and total production numbers of the inverter. I, unfortunately, have just now gotten the ability to see the production per panel, but over the past year I had noticed the drop in total peak and daily production that is consistent with the drops shown for those panels.Comment
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There isn't any shade around the panels and the production gap is consistent throughout the day. I don't have micro inverters, but each panel does have an optimizer. Could it be bad optimizers? It seems like 8 panels going bad out of 24 is a pretty bad failure rate. Could loose connections or something cause it? Thank You.
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I don't have a way of checking on the individual panel output, but I have a sense energy monitor that can confirm the real time and total production numbers of the inverter. I, unfortunately, have just now gotten the ability to see the production per panel, but over the past year I had noticed the drop in total peak and daily production that is consistent with the drops shown for those panels.
Have them give you full access and click on the owner check box as well for you.
OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNHComment
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ButchDeal, I do have that access, but DanS was suggesting that it might be a reporting problem and had asked if I had a way of double checking the numbers, which I don't for the individual panels.Comment
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Well, crap, that looks exactly like what is happening to me. And now they're bankrupt and not honoring any warranties. Thank you for solving my mystery though.Comment
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