About that Chamath interview... I am not sure he is right about energy trading. He made it sound like "all of us" will be able to trade energy with the new Tesla Autobid software, but the way I understood was that this is for Powerpack/Megapack not Powerwall. Even if the SW makes this seamless and needs no knowledge/skills from the end user, I am pretty sure that energy trading is not something just any residential user can do. At least in Hungary you need a rather expensive permit for it and I bet your local utility company needs to OK as well. This is meant for companies, not private citizens.