Thanks for starting the thread, MWalsh. Do you also have the cell and module efficiencies for your panels?
I'm very curious because our system has been up an running for approx. 2 mos. and I sometimes
feel like ours may be underperforming given original production projections and hearing your all's
Yesterday (12/16), our production was 8.1 kwh (4.3 kw dc).
Our panels are all west-facing (magn. 257°, true 270°), and on a std. pitch of 19°.
Our cell and module efficiencies are 19.3% and 17.1%, respectively.
This will be great for those of us in the same general area (central/south OC) with relatively similar temps
and cloud cover to compare production nos.
JPV, since your roof pitch and location is close to mine (Tustin Ranch, near Peter's Cayon and Irvine Regional park), and your DC system 4.3Kw is similar to my 4.0Kw, you'd expect the output to be the same. However, I noticed all of your panels are facing west, that would reduced the efficiency a bit.
Also keep in mind, for much of OC summer, the inversion layer doesn't burn off until ~11am to 12noon sometimes, so the South vs West orientation doesn't make a whole lot of difference. For the Winter and Spring, where we don't have the inversion layer, and we get direct sun in the morning, then South vs West is more noticeable...but since Summer is when the day is the longest, West facing system isn't all that bad at all in comparision with South's...at least here in the OC.