Rednecktek
Solar Wizard
You mean like either of my threads?We aren't taking about a driveway light here.
Back to somewhere near the OP, with my napkin math above it would seem that since a 100w panel through a PWM would only get you 70w/panel at best, then right about 300w would seem to be the point where MPPT really starts to shine as you're paying $300 for the panels, but only getting $200 worth of theoretical output. That's $100 closer to a MPPT and at that rate it would seem, again napkin mathing here, that at 400w you're starting to level out the curve on dollar per watt as you're spending $400 in panels for about 2.8 panels worth of power. I'm sure with enough sleep I could calculate out the bell curve on that, but jet lag sucks.
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