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by systemtest 9mo ago
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- toomuchtodo 9mo agoThis is factually inaccurate. Solar PV panels will continue to produce power at 80-90% of rated output after 25 years, and battery storage will still have 80-90% capacity. I'm sure you can understand that as long as the system is storing and producing power at these levels, its value is not zero.
- systemtest 9mo agoCan you point out what part of what I said is factually inaccurate?
- toomuchtodo 9mo agohttps://magnifina.com/articles/rooftop-solar-yield/ https://magnifina.com/articles/rooftop-solar-yield/ explains it better than me attempting to write a wall of text.
- deleted 9mo ago[deleted]
- triceratops 9mo ago> while the initial principal of your bond investment will remain intact. As long as the bond issuer remains solvent. How much do you trust bonds that yield 9% to retain their full value for 25 years?
- systemtest 9mo agoDon't buy junk bonds. Why are you looking for bonds that yield 9%?
- triceratops 9mo agoFrom the article: "Another way to look at this is that the investment is returning ~9%/year."
- systemtest 9mo agoThat is without accounting for depreciation of the installation.
- triceratops 9mo agoHow do you measure the depreciation? The panels deliver at least 70%, but probably closer to 80%, output after 25 years. The batteries need replacing after maybe 15 years. Assuming that knocks a couple percent points off the return (batteries can only get cheaper and cheaper) that's still a solid 7% long term yield with no default risk. Share your math if you disagree. EDIT: Two more things that will juice the return 1. Grid electricity prices will go up over those 25 years, at the very least tracking inflation. 2. Unlike bond coupon payments, the "return" from a solar installation isn't taxable. Because you're saving money, not getting paid.