I just checked my inverter output at 5pm. It said zero watts
. It's nice and sunny, but later in the day, not so late as to cut off output. It shows that the array logged around 640 watt hours for the day (not too impressive). I went out and the inverter was cool to the touch, panels were quite warm. I opened up the DC junction box and the array voltage was around 46 volts. I checked each panel and they were between 11.5 and 11.75 volts. The middle ones were lower than the outer ones (heat related?). I thought about experimenting with some water cooling but it's late enough that the sun may not be at a good angle for the test. Maybe tomorrow I'll try something during peak solar conditions. I hope the glass can take the rapid temp change (I'm sure they are tempered). I also suspect the array angle some, but if cooling brings the voltage up dramatically, I'll drop that suspect.