I've been wondering why Tesla doesn't just do this. IIRC from the public Model 3 and Y teardowns, the cars already have the hardware to do this, so it's just a question of a software update and policy. Would love to know why it isn't in production yet; it seems like a no-brainer so there must be something impeding it.
I don't think they have the hardware to do it. And I think the house themselves would also need extra hardware and integration, and its also different from state to state and country to country as far as I understand. But I don't know the details.
If Tesla rolls this out, it's probably a program that they want to spearhead and manage, and my guess is that this is an absolute monolith of a problem to tackle and requires participation from notoriously super shitty power companies.
