House/solar battery opinions
My current battery space is 20"L x 14"w x 10"H Going solar, and want to packs as much AH in there as I can (reasonably). Currently looking at 250 - 300. Price is not THE deciding factor, unless ...
Forum Discussion
seraphim wrote:
I'm looking for upgradable efficiency, and I think the higher voltage panel and mppt controller will help offer that. If I'm understanding things correctly.
MPPT will get more than PWM out of the panel area, but only 8-10% more. So 235W with MPPT will be as if it were 260W with PWM. Many people here will disagree and tell you that they don't believe in MPPT and it won't give any "boost" over PWM at the given panel size :) ... Anyway, the "efficiency" of MPPT vs PWM will not be too significant.
seraphim wrote:
My concern with the one panel is it will be flat mounted - would like some 'extra' to make up for the loss of power from a flat mounted panel.
Yes. This is why flat 4*100W with PWM is better than flat 235W with MPPT. Because 400W is more than 260W. Total cost of such a system will be higher than one 24V panel with MPPT controller, but you will get more watts in the end.
