PV upgrade decision
Right to the point: should I upgrade to a bigger panel or to an mppt controller? More info for those that take the time to read: I have a 100 watt, 21 ish volt panel and a pwm controller right ...
Forum Discussion
MPPT is not going to make a big difference in harvest with a 100W panel, maybe 10-15 percent in the most favorable conditions. MPPT will be necessary when using 24V nominal or greater voltages. Otherwise, you will be missing a lot of amps that could be harvested.
FWIW, I have a single 235 W module, using an MPPT controller. The panel is rated to 8 amps or so, IIRC. The voltage is 36V. I've seen days where batteries are low and output approaches 15 amps.
FWIW, I have a single 235 W module, using an MPPT controller. The panel is rated to 8 amps or so, IIRC. The voltage is 36V. I've seen days where batteries are low and output approaches 15 amps.
