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Gascort,
I was wondering which of the "cheapie" Harbor Freight panels you were considering. The lowest price ones I found were just a bit over $4/W. Those were the 15 Watt panels at $70. The prices continue up to about $8/W from there. I have been watching Craigslist lately and have seen a number of listings for one or two year old panels selling for $3/W or less. Most of them appear to be from owners who are losing their homes and don't want the banks to get the panels(or so say the ads).
This could be an option for less expensive panels. Don't forget a controller. Morningstar makes a fairly inexpensive 10A max charge contoller/regulator.
Nice project. Good luck.
JJ
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