[RE-wrenches] Solar power Magic

[Keith Cronin]

Perhaps we need to look at using a different metric altogether?




________________________________
From: Bob-O Schultze <bob-o at electronconnection.com>
To: dkatz at aeesolar.com; RE-wrenches <re-wrenches at lists.re-wrenches.org>
Sent: Monday, July 27, 2009 7:17:57 AM
Subject: Re: [RE-wrenches] Solar power Magic

Hiya David,
If ever there was an argument against the upfront, per-watt incentive in favor of a feed-in tariff, that's it!
Bob-O


On Jul 27, 2009, at 10:05 AM, David Katz wrote:
Bob-O
I see a use for SolarMagic from National Semiconductor in large systems with many parallel strings, installed by inexperienced contractors who put some of the strings in the shade, not realizing how little you  get with minimal shading of one string in parallel strings of modules.  They might have to buy these to appease the system owner who is not getting what they expect from their system.
They Tigo converter is very interesting and has an MSRP of $56.  At this price it will make some sense.
Cheers,
David


David Katz
President
AEE Solar
1155 Redway Drive
P.O. Box 339
Redway, CA  95560
Tel (707) 825-1200
Fax (707) 825-1202
david at aeesolar.com
www.aeesolar.com
 
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Bob-O Schultze wrote:
Hiya Dana,
>No to all those things, but... I'm told they are about $200 a pop. Say they increased output by a total of 5%. Seems unlikely, but say they did. Speaking in retail, $200 represents what these days... 40 watts or so including racking, give or take? Say you are using a 200W module. 5% = 10W. Hmmmmm. I can envision some tight spots where that might pencil, but not many.
>Bob-O
>
>
>
>
>On Jul 26, 2009, at 5:41 PM, Dana wrote:
>Does anyone have any experience with these units?
> 
>Do they work with off grid lower voltages?
> 
>Do they work with all controllers?
> 
>Do they affect MPPT function positively or negatively?
> 
>Do they work well with Grid tie?
> 
>How would you gauge the increased performance?
> 
> 
>Dana Orzel
> 
>Great Solar Works, Inc
>www.solarwork.com
>E - dana at solarwork.com
>V - 970.626.5253
>F - 970.626.4140
>C - 970.209.4076
>“I'd put my money on solar energy… I hope we don't have to wait 'til oil and coal run out before we tackle that.”
>—Thomas Edison, in conversation with Henry Ford and Harvey Firestone, March 1931
>
>
>
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