Solar Panel Voc-MPPT?
Wondering if there is any relationship between measured Voc and MPPT performance with a 24v panel. My 12v panel has a Voc rating of 21.9 and Isc of 8.2, but I often see 8.2ish when Voc is only 20....
Forum Discussion
pianotuna wrote:
Hi,
It is clear that MPPT does have the potential to harvest more energy. It is not always economic to use it. If the roof "real estate" has been maxed out--then the only way to get a bit more (8% is a bit more) is to use a good quality MPPT unit.
Of course, a temperature probe on the battery bank is an extremely desirable feature on either PWM or MPPT.
In racing, there is a saying "the only substitute for cubic inches is cubic $$$$". Kinda the same thing for solar when talking about efficiency and maximum solar harvest. Cubic $$$ comparison between PWM and MPPT controllers.
In the end it is "what's the potential extra current it worth to ya".
