Solar Boost in Net Metering [RE-wrenches]

[Jeffrey Wolfe, Global Resources]

Travis,

The Fire Wind And Rain has two models. The more expensive one has really 
extensive data logging and graphical interface capabilities. Of course, the 
unit does not work right yet, but hopefully they get the product ironed out 
and working, and you can then add in a data logger for about $200 over the 
cost of a std MPPT unit.

Jeff


Jeffery D. Wolfe, P.E.
Global Resource Options, LLP
A Woman-Owned Vermont Limited Liability Partnership
4 Kibling Hill Road
P.O. Box 51
Strafford, VT 05072
802/765-4632
802/765-9983 (Fax)
global at sover.net
www.globalresourceoptions.com


I'd like to set up a something on my array side (vs. the common - of the
system) and use it to count the array's amp hour production.  A Tri-Metric
or similar would be nice and I believe it would be more accurate than the
C40 DVM and for the most part, pretty inexpensive.  What would really be
nice would be something that would take voltage into account and give daily
watt hours.  Yes, you could do this with a data logger but it will require
combining two channels and would a lot more expensive than a customer would
want to pay.  It seems that this would be a great product in this day of 
net
metering systems gaining popularity.

Thanks
Travis
----------
>From: "Jeffrey Wolfe, Global Resources" <global at sover.net>
>To: "'RE-wrenches at topica.com'" <RE-wrenches at topica.com>
>Subject: RE: Solar Boost in Net Metering [RE-wrenches]
>Date: Tue, Aug 15, 2000, 9:28 PM
>

>Jon,
>
>Both the Solar Boost that we use on our mobile setup and the Fire Wind and 
>Rain that we are destroying in our basement are hooked up to net meter. 
The
>only tricky part is just like on the C-40's or others. Make sure the
>controller does not go into shutoff due to voltage. I was told by Trace to 
>keep the voltage differential (between the Inverter and the charge
>controller) at .5V for 12V system, 1V for a 24V system and 1.5V for a 48 V 
>system, due to "measurement errors" (i.e. to make up for Trace's bad
>meters).
>
>The power boost and the voltage conversion have nothing to do with the net 
>metering otherwise. Of course, we do not see the larger boost, since we 
are
>operating at "battery full" levels, but we are still seeing an
>(unscientifically measured) approximately 10 - 15% boost with the SB50. 
(No
>boost, probably deficiet, with the FWR)
>
>Jeff
>
>Jeffery D. Wolfe, P.E.
>Global Resource Options, LLP
>A Woman-Owned Vermont Limited Liability Partnership
>4 Kibling Hill Road
>P.O. Box 51
>Strafford, VT 05072
>802/765-4632
>802/765-9983 (Fax)
>global at sover.net
>www.globalresourceoptions.com

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