[1993Newell]

I have heard that by the time you think you have gotten back any money you may have saved, it's about time to change your old panels for new ones.

Not sure how true this is?

I believe solar is one of those options you choose to have because you think it will benefit you and your needs. If so then it's something you should add to your coach. If you think it wouldn't benefit you much, then of course it would probably feel like a waste of money.