Signed up for Solar Energy Installation Evaluation...

I finally signed up for an evaluation from one solar installation company.  I expect to hear back in three business days...I'd like to see if it makes sense to use solar energy to take us off the grid one day (wait until another blackout then we're all off the grid).  Environmentally it is a compelling scenario...economically is another story...aesthetically it may be problematic too...should I worry that in 20 years when I want to sell our house that it will be outdated (like the Brady Bunch ranch houses)?  hey, bite the bullet, God did not put me on this earth forever to exploit and plunder and not care..I plan to sign up for more installation companies...