“Even if that number is only half right, what kind of investment do you make that takes 20 years before you break even? I understand solar energy is eventually going to become more efficient and maybe even cost-effective. Maybe. When it proves to be affordable and reliable in providing a substantial percent of our energy needs, then maybe it’ll be worth discussing. Meanwhile, we have to keep our cars and trucks running and our homes and buildings heated. There are much more efficient, cost-effective, and reliable ways of doing that.”