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MEXICOWANDERER's avatar
MEXICOWANDERER
Explorer
May 01, 2015

Transporting Solar Panel In A Toad's 4' X 6' Roof Rack

RV net loads 3-5 times faster than Google and about 10 times faster than many sites. It makes online shopping tough I learned MPPT is cheaper per watt but I'm wondering if MPPT is worth it for 200 ...
Almot's avatar
Almot
Explorer III
May 02, 2015
pianotuna wrote:
Hi Mex,

The consensus is that below 400 watts it may ultimately be cheaper to have nominal 12 volt panels and a GOOD pwm controller with adjustable set points.

Yes, cheaper. Though it can be easier to install panel mounts and route the wires for 2*200W than 4*100W. Not to mention that in the space taken by 2*200W you can install 2*250 or 2*270W, same size as 200W.

I think setpoints in Sunsaver 20 are not adjustable. But it's small, black, inobtrusive when you nail it to some chicken shed.

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