cost per kWh [RE-wrenches]

[matthew tritt]

Hey there all you wrenches,

Has anyone tried selling used GC 1000s? If so, what would be a target price
(all things considered).

Matt T
----- Original Message ----- 
From: "Eric Smiley" <Eric_Smiley at bcit.ca>
To: <RE-wrenches at topica.com>
Sent: Thursday, May 29, 2003 11:52 AM
Subject: RE: cost per kWh [RE-wrenches]


>
> I think it makes more sense on a battery based system without MPPT to
> use peak sun hours and array mpp amps (Imp). Amps are pretty much
> proportional to sun light intensity and the modules are going to produce
> Imp or greater at battery charging voltage and elevated temperatures.
> For simplicity, I keep all my calculations on battery based systems in
> terms of amps and amp hours. Working in watts means using two different
> "typical" battery voltages -- one for charging and one for discharging
> -- which is necessarily vague.
>
> If you have the time, you can copy and paste hidden cells in RetScreen
> onto a blank worksheet and decipher what is going on in the background.
> Another engineer told me about this and discovered that RetScreen
> actually calculates monthly energy values but keeps them hidden and only
> displays a yearly summary.
>
> Eric Smiley
> Project Leader
> Photovoltaic Energy Applied Research, Technology Centre
> British Columbia Institute of Technology
> Burnaby Campus
>
> NE25 - 3700 Willingdon Avenue
> Burnaby, British Columbia
> Canada V5G 3H2
>
> phone: 604.432.8657    fax: 604.436.0286
> esmiley at bcit.ca             www.tc.bcit.ca
>
> The information contained in this E-mail is intended for the addressee
> only.  If you have received this in error please delete it.
>
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