Interesting info on Uni-Solar panel comparison [RE-wrenches]

[Todd Cory, Mt. Shasta Energy Services]

I have the data from that test if anyone wants it, contact me off list.

Todd


Doug Pratt wrote:

>   At 6 months we ran a "solar shoot-out" at one of our summer Sol Fests
> comparing the 4 US64s against 4 Siemens SP75s and 4 Astropower 75s. Each
> module was monitored and data-logged individually, but all were charging
> the same 12-volt battery pack.
>   Since Uni-Solar performed substantially better than the single crystal
> modules, which we were...and continue to...sell the most of, we never
> published the results. Uni-Solar did use the info for a little while,
> which the folks at Sandia were VERY unhappy about(what's wrong with
> real-world, name-brand comparisons I'll never understand).
>   The conclusions I saw were that Uni-Solar triple-junction comes out of
> the box VERY hot; they degrade about 15% in the first 60 days or so, and
> then degradation levels out. Will they make it to 20 years within 20% of
> rated output? Nobody knows for sure. Uni-Solar is betting the company on
> it. We do know there IS a substantial power bonus initially.
>
> Best regards,
> Doug Pratt
>

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