Isn't this something of a contrarian bet on solar technology, and energy technology more generally?
If you anticipate technology improving or prices for energy coming down, you wouldn't invest in today's technology.
If you anticipate technology improving or prices for energy coming down, you wouldn't invest in today's technology.
You're mixing the cost to the consumer with the investment return.
If energy prices come down, he will lose money.
Why not? The amount of profit he makes is already basically fixed up front, and more generally the amount of profit these investments generate will probably only decrease as the technology improves.