Inverter Load Analysis [RE-wrenches]

[Jeremy Rodriguez]

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I always size for winter. At least that was the method I was taught. In fact 
we have never tried to size for summer use. Most of our off grid clients, 
which is all of our clients here in Colorado, need more power in the winter 
for heating loads, etc. I use 5.9 ave. sun hours with Windy's spreadsheet. 
Keep in mind that I have only been doing this for 6 years now, and I learn 
everyday.
P.S. I have noticed very little change at DSP now Conergy!

Jeremy
All Solar
Penrose, CO
allsolar at ris.net

----- Original Message ----- 
From: "Barbra Kerr" <bkerr at energy-exchange.org>
To: <RE-wrenches at topica.com>
Sent: Friday, July 29, 2005 9:30 PM
Subject: Re: Inverter Load Analysis [RE-wrenches]


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Jonathan-

Your comment about sizing for summer came as a surprise to me, as I was
trained to design for winter.  I understand all too well the rationale for
doing so, as I have lost too many bids in the low-competition off-grid
market in my area.

Question to all off-grid Wrenches:  Do you do this as well?  If sometimes -
What (besides the clients budget) is your determining factor to design
summer vs winter?

Thanks

Barbra K Kerr
President
Kerr Enterprises, Inc
1-800-886-2258

Jonathan's comment about sizing for summer
>>>
>> Ray-
>
> To keep costs reasonable, I usually size systems for summer conditions. 
> When it's less sunny, they can supplement with the genny until they can 
> afford more modules. customers tend to use a lot less power when the 
> option is the generator.
> -- 
> Jonathan Hill, solar applications engineer
>

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