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Old 11-14-2011, 08:33 PM   #42
frquixote
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Join Date: Mar 2006
Location: Kapolei, Oahu, HI
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Quote:
Originally Posted by Pinecone View Post
And how much did those solar panels cost?

What is their life expectancy?
After state and federal tax credits, about $17.5K. Ignoring the time value of money and escalating electricity rates ($0.25/kilowatt last year at this time and $0.35/kilowatt now), the payback period is about 4.5 years. Would be about 12 years without the tax credits.

Life expectancy: About 25-30 years with output warranted for 20 years.
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