BFL13 wrote:
... there is no point in spending a lot extra for a couple more amps {with MPPT}, when a cloud can come by and steal your couple of amps anyway. ... Out comes the generator usually. So now the gen is out, who cares? It can do in an hour what solar can do all day.
I thought the people had voted already on the subject of MPPT vs PWM :)
It is not "a few amps" more, but 10-20% AH a day more. There can be many different energy consumption patterns, if you can stay within 40 AH a day, then even few AH matters, and generator is collecting dust peacefully. This means a lot of energy conservation, no 120V gadgets.
With systems under 200-250W, however, I agree, there is no point - usually - in paying more for MPPT. Though, one 200W 24V panel is - usually - cheaper than 2*100W, so the total cost of system doesn't increase much.
