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I calculate that my pair of AC coupled, stacked Outbacks will use just
under a kWh/ day in idle losses. When the inverters are feeding
small loads (as they usually are) high inefficiency should at least equal
idle losses.<br><br>
<br><br>
<br>
At 08:24 PM 11/2/2011, you wrote:<br>
<blockquote type=cite class=cite cite="">Hi Jeff,<br><br>
1500Wh? That's a 62 watt loss 24/7. That is surprising as it's more than
twice what the manufacturer claims; 25 watt with no load or 0.6kWh
daily. However, as loads come on the idle losses quickly diminish
as they are overtaken by the load. I have not done any SI jobs but that
number, 1.5kWh, concerns me. <br><br>
Larry Crutcher<br>
Starlight Solar Power Systems<br><br>
<br>
On Nov 2, 2011, at 4:42 PM, Jeff Irish wrote:<br><br>
> William,<br>
> <br>
> I did a 2 year long study on a Sunny Island 5048 grid-intertie
battery back-up system and found the SI and batteries used about 1.5kWh
per day in "overhead". The batteries were 8 Concorde AGMs
212Ah C20. Hope that helps. <br>
> <br>
> Jeff Irish, PE<br>
> President<br>
> Hudson Valley Clean Energy, Inc.<br>
> and Adirondack Solar<br>
> 13 Hook Road<br>
> Rhinebeck, NY 12572<br>
> T.845.876.3767x110<br>
> F.845.876.3912<br>
> jeff@hvce.com<br>
> Renewable Energy Systems<br>
> Solar, Wind, Geothermal<br>
> NYSERDA Eligible PV Installer<br>
> NABCEP Certified PV Installer<br>
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