Yeah, but I'm looking for the equation as to how you get to that 75-80 percent figure.
marco Marco I use 75% as a general rule, it seems to work out well. I've gotten upwards of 80% on certain enphase & sanyo installations. Mike Nelson MD Electric & Solar, Inc. Gualala, Ca. 95445 On Tue, Oct 12, 2010 at 6:17 PM, Marco Mangelsdorf <ma...@pvthawaii.com> wrote: Could someone please provide me with that generally accepted equation when it comes to estimating AC output from a PV array versus the STC rating? That is, I'm looking for that equation which estimates the losses due to mod mismatch, soiling, wire losses, etc., etc. I've got someone who mistakenly expects their PV array to put out 90 or more percent of the STC rating. Thanks, marco
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