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
2oldman wrote:jayw900 wrote:They can, if ...
I have a 100 watt, 21 ish volt panel and a pwm controller right now. I'd like to get a 345 watt, 39ish volt panel and mppt controller but they can't happen at the same time.
a) the panels' amperage is about the same
b) you wire them in series
I think he meant the financial issue. Big panel now, $$$ MPPT next year.
Typical big panel will have amps very different from his existing 100W. And if it's not very common - like that 6A*55V in the link - then it likely won't be cheap or readily available in the area.
