: Why don’t all buildings use solar panels on their roofs to generate electricity?
In: Technology
Solar panels on every roof is probably the future. But for now it costs initial money to install them.
It depends on many factors how fast you can recoup the money. In ideal conditions, if you let’s say install them yourself and use all the generated electricity yourself (charging your EV for example), they can start saving money after 3 years. Which is great. Basically free money.
On the other hand if you have to pay someone to install them, and have to take a loan to afford it, and you don’t use all the electricity yourself (you get way less $ for the electricity you generate, than what you pay to buy the same amount. Because you pay for the distribution in big parts), or maybe you need expensive batteries in addition… then it might be worth it after 15 years.
So, recouped after 3 years? Nobrainer. Do it.
Recouped after 15 years? Nobody knows what changes in 15 years. Probably not worth it.
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