cost per kWh [RE-wrenches]

Don Loweburg, Offline i2p at aol.com
Sat May 31 13:45:31 PDT 2003


In a message dated 05/30/2003 1:25:35 PM Pacific Daylight Time, 
billb at endecon.com writes:

> I think the correct method is to use watts and an appropriate adjustment
> factor rather than amps.
> 

Here's a seat of the pants estimating method I use for sizing battery 
systems. Crude but comes closer than most of us would wish for stand alone systems. 
Multiply STC array watts X Peak Sun hours - divide by two= AC KWH/day.
Don

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