not sure if this is valid to this discussion at all, but Youtuber ColdFusion recently released a video about solar panels. In the middle, it was mentioned that there was a new startup MIT research team that managed to develop solar panels that are extremely thin, essentially binding like foil to the shape of your roof instead of those blocky rectangular panels we have now.
Here's the video:
Skip to 06:00 to see this research.
Is Tesla secretly partnering with some companies that is developing similar aesthetically pleasing solar panel technologies?