net-metered efficiency observations [RE-wrenches]

Kirk Herander kirk at vtsolar.com
Thu Mar 18 12:38:22 PST 2004


Todd, The readings were dawn to dusk, and this inverter eats about 1kw of
grid power overnight.

Vermont Solar Engineering
Kirk Herander
North American Board of Certified Energy Practitioners
Certified Solar PV Installer(TM)
Xantrex Certified Dealer Charter Member
NYSERDA-eligible installer
Vermont Solar and Wind Partner

PO Box 697
Burlington, VT. 05402
www.vermontsolar.com
www.backeastsolar.com
800.286.1252 - 802.863.1202
fax 802.863.7908

----- Original Message -----
From: "Todd Cory, Mt. Shasta Energy Services" <toddcory at finestplanet.com>
To: <RE-wrenches at topica.com>
Sent: Thursday, March 18, 2004 3:18 PM
Subject: Re: net-metered efficiency observations [RE-wrenches]


> Kirk,
>
> I assume you have 4 kW on a 5548. Did you take the reading the next
morning, so
> the wasteful and unnecessary SW  floating the batteries all night was
subtracted
> from your gross production on the meter? I have many winter weeks where
there is
> not enough sunshine to even make up for the SW wastes. So net efficiency
will be
> better in the high production summer months than in the winter. I have
plans to
> retire my old 4024 and install an outback GVFX with a smarter silent sell
> feature.
>
> Todd
>

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