cost per kWh [RE-wrenches]

[Don Loweburg, Offline]

In a message dated 05/31/2003 8:14:50 PM Pacific Daylight Time, 
joeldavidson at earthlink.net writes:

> Don,
> 0.50 is pretty serious derating from STC to Real World AC. I multiply STC by 
> 0.64 for
> single crystal and 0.62 for poly and then factor in array azimuth and tilt
Joel
I figured this is more conservative than most. Not to quible but I prefer to 
be very conservative estimating offgrid systems. I would go with your derates 
for a battery system -grid connected.


Best,Don

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