Hi all
I thought it would be useful to highlight the detrimental effect even minor shading has on a panel and/or string.
I got my script working again that pulls data from my micro inverter working so I can monitor the output from each panel. I had noticed that one of my panels was producing a reduced output (19%)
I investigated when I got home and found the following flower covering less than a cell on one panel!
TBH I was gob-smacked on the effect of this minor shading and how much it affects the output of the panel!
The moral of the story is to not underestimate any shading on PV panels…
I put micro inverters on that array because I expected shading as the sun goes round but I would have never expected that much deterioration from that small amount of shading!
On Monday, Aug 21 at 1:19 PM I’ll get to enjoy a solar eclipse! In Chicago 87% of the sun will be blocked by the moon. I’d like to add to Dave’s Shady post but I don’t have solar panels (yet).
For those of you with solar panels: Are you anywhere near the path of the eclipse?
Yep, I think the SolarEdge approach and the microinverter approach both have that in common. The only difference between them is whether you run AC around your roof, or DC and whether you have lots of little inverters, or one big one… each with their own advantages and disadvantages.