I recently came across this article and thought it was worth sharing!
Here is an excerpt below, but you can read the whole story on Grist.
"It might feel like solar panels have been around long enough that they should be plastering the built environment. After all, Jimmy Carter first put panels on the White House roof more than 40 years ago. But your vision of solar utopia may be a little ahead of the times.
“Solar has only really been this economic for about five years,” Jenny Chase, the head of solar analysis at the energy research firm BloombergNEF, told me. Major home renovations don’t happen overnight."