My system:
27 x SunPower 230W panels
SMA 5000 inverter
All panels on the same pitch, just slightly off directly south and on a 20 degree tilt.
Production figures moved to Google document:
https://spreadsheets.google.com/ccc?key ... y=CPOvlYAD
JPVLeaf wrote: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
production nos.
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.
mwalsh wrote:I would think your west facing panels are probably why you're taking the hit. But anyway, our panels have an efficiency of 18.49%. Our inverter has an efficiency of 95.5%, and our design factor is 98.140%.
garygid wrote:JPVleaf,
Is the West string isolated from the South string, even by diodes, connected to different inverters, or are they both just connected to one inverter?
Tell us about the inverter(s), ... main or micro?