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HiTech's avatar
HiTech
Explorer
Dec 14, 2012

Measuring solar yield approaching winter solstice

I need to get a temporary setup on the RV roof to measure solar yield around the winter solstice. How deeply discharged will I need to get my 85 Ah battery so that it allows pretty full production ...
Salvo's avatar
Salvo
Explorer
Dec 19, 2012
No, that's not correct. Both have decreasing voltage with increasing temperature: -0.21% vs. -0.41%/C.

On the negative side, Unisolar has half the module efficiency (at rated irradiance) compared to Kyrocera. If space is an issue, then probably Unisolar is not a good fit.

SaL

HiTech wrote:
Sal's document is the first place I saw that their output actually increases with temperature rather than the usual decrease.

Jim

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