Hi,

I have been curious about solar for sometime.

I am looking at my electric bill and I use less than 600k watts a month 
for 1/2 the year.

My math does not seem to work out.

1) Convert 600000 watts at 120 volts * .1 = 60,000 watts at 12 volts.
2) 60,000 watts divided by 30 = 2000 watts at 12 volts per day.
3) If I can harvest solar for 4 hours a day that is 2000/4 = 500 watts 
at 12 volts.

That means I only need 500 watts of solar.  This does not take into 
consideration loss of power in the system.

If the system losses 30% then I need around 715 watts of solar panels to 
meet my needs.

I was expecting a lot more.

Any help is much appreciated!!

Keith

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