wpns
Solar Joules are catch and release
I've got some Q-Cells Q.Pro BFR-G3 260 260W (60 Cell Poly) panels that are closing in on 9 years old, and still appear to be working well. I'm looking at moving them to another inverter (probably EG4 18Kpv)
Their original specs:
8.99A Isc (8.45 Impp)
38.00Voc (30.78 Vmpp)
As panels age, does the current, or voltage, or both degrade, or does the MPP shift, or what? There must be enough experience with decades-old panels by now. Not really looking to replace them, as that seems to be an oddball size nowadays, so I'd need to rework my racking, etc, so I'm mostly just wondering and trying to figure out how I'd replace a damaged one...
Thanks!
Their original specs:
8.99A Isc (8.45 Impp)
38.00Voc (30.78 Vmpp)
As panels age, does the current, or voltage, or both degrade, or does the MPP shift, or what? There must be enough experience with decades-old panels by now. Not really looking to replace them, as that seems to be an oddball size nowadays, so I'd need to rework my racking, etc, so I'm mostly just wondering and trying to figure out how I'd replace a damaged one...
Thanks!
Last edited: