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<big>i have a simulation (leed) i am responding to comments on &
just noticed in my ps-h report for my pv system that:<br>
<br>
a) despite not changing anything in the pv setup from my last
submittal, and<br>
b) the horizontal columns to the right (last graphic) that sum the
operating hours not changing,<br>
c) there is a rearrangement in operating hours allocation between
the 30/40 run hours and 70/80 run hours columns where the vertical
column (hours within each part load) are slightly different but
the differences cancel each other out so the horizontal (total run
hours) total remains the same,<br>
d) and there is a slight change in the ac output kwh generated
while the dc input kwh remains the same. see screen capture below
(new run on left, old run on right). new inverter ac output kwh
is slightly higher.<br>
<br>
this is a little bit of a puzzler as i did not change any of the
inputs for the pv i'm not sure where to begin to look to see what
may be the cause behind the changes. (i have checked the pv
inputs from the original submittal & they're the same for the
inverter & panels).<br>
<br>
there was no review comment regarding the inputs, or the reports
specifically, just that the reviewer didn't understand the way
equest subtracts the pv from each end-use on the electric meter it
is assigned to, so if i resubmit with a different pv ac output kwh
this may raise a flag as i'm sure the reviewer (and myself) would
expect the amount of pv generated to remain the same if it wasn't
changed. heck, it's confusing me & i'm the one who set it up.<br>
<br>
any ideas what would cause a change in the pv ac output kwh where
the dc input kwh stays the same? it doesn't sound like a pv
module or shading concern.</big> i have had some adjustments made
to the hvac & lighting (some slight increases, some slight
decreases) but neither system would affect the output of the
inverter, right?<br>
<br>
<br>
<img src="cid:part1.00040101.09040808@gmail.com" alt=""><br>
<br>
<br>
<big>summary columns for load hours when operating, note the
horizontal totals (right column) are the same but the verticals
differ starting at column 4 to column 9).</big><br>
<img src="cid:part2.02060203.00070606@gmail.com" alt=""><br>
<br>
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