inexpensive panels
Hi all, I know nothing about this firm--but the prices appear to be low: https://www.santansolar.com/?fbclid=IwAR17Xx_DhkB3h13BFmTjqejxTlf92ZO7UsVEAiNjNmcyNzrOkJx9XgYN26c
Forum Discussion
Boon Docker,
For equal wattage panels, MPPT may, under some conditions, harvest about 10% more. But it has to be a quality MPPT. Research heliotrope controllers for an example of a lousy mppt.
So with 12 volt panels, given current low costs--it may be better to do an extra panel.
On the other hand, if you want every erg of power--populate the entire roof, use electronic actuators for tilting, and use a top of the line MPPT controller.
If you go that far, then consider jumping to a 48 volt battery bank, with SiO2 batteries for storage.
For equal wattage panels, MPPT may, under some conditions, harvest about 10% more. But it has to be a quality MPPT. Research heliotrope controllers for an example of a lousy mppt.
So with 12 volt panels, given current low costs--it may be better to do an extra panel.
On the other hand, if you want every erg of power--populate the entire roof, use electronic actuators for tilting, and use a top of the line MPPT controller.
If you go that far, then consider jumping to a 48 volt battery bank, with SiO2 batteries for storage.
