Quote:
Originally Posted by sendler
Looks like about $1/ Watt right now.
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Astronergy CHSM 6610P 255-watt solar panel
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I am in zone 5.
4 hours of solar energy / day average. 2 hours in the winter.
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Solar Insolation Map
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I would need $12,000 in panels to charge 80 miles into a car during the winter. Versus $7 in gas. Or $3.80 from the grid. 250 round trips per year would be 12.5 years for pay back. Might be able to reduce my electric bill from surplus production on the better days and in the peak of summer. $200 per year? 10 year payback.
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Youch! A top of the line grid tie charge controller brings the 12.7kWh system to $20,000 with no batteries.
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Solar Power System by SolarEdge with 12,750 Astronergy Solar Panels
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According to that, I am in Zone Two, 6.58 hours average. Inyokern is the only city rated higher, just a bit, at 7.66. They have an average high temperature of 80.833ºF. The average high temperature in Phoenix is 86.75ºF.
More sunlight, but less heat?
I cannot imagine that it is this simple, but if I multiply your $20,000 by the average of four hours of sunlight, and divide by my 6.58, would a system sufficient to provide the same amount of electricity cost me roughly $12,158?