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Old 02-11-2025, 09:05 AM
Bill14564 Bill14564 is offline
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Quote:
Originally Posted by retiredguy123 View Post
It looks like you didn't factor in the time value of the $11,000 initial cost. In 9 years, $11,000 invested at 5 percent per year, would yield an investment income of about $5,000. Also, have you factored in the cost to remove and re-install the panels when you replace the roof? This can cost about $3,000 to $5,000. And, during that 9 years, if you didn't have roof leak, you have been lucky. Try calling a roofer to repair even a small leak and tell them that the leak area is covered with solar panels. They will probably hang up on you.
But the $11,000 would not have been invested at 5 percent per year. Interest rates have not been that high for the past nine years (and are not that high today) and 5 percent per year would just cover inflation so there would be no effective gain. Besides, by now all of that $11,000 would have been paid to SECO or Duke.

I wonder if the additional cost for removing and reinstalling the panels would be much different than the variation in cost for grades or colors of shingles. Basically, is the amount in the noise? And since the panels would keep much of the roof in the shade, the shingles would not degrade as quickly and might hold up longer. Then you could consider the time value of the replacement money if it was invested at 5 percent for an additional year or two.
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