But, if the solar panels are cheap enough that the electricity produced by them is cheaper than that of the power company, having them is still a net win. Even if they don't cover the entire energy requirement they'll still reduce the cost of driving.
Reductionist and proud of it.
Being ignorant is not so much a shame, as being unwilling to learn. Benjamin Franklin
Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails. Clarence Darrow
A person who won't read has no advantage over one who can't read. Mark Twain