That’s right, your electric car could theoretically serve as a battery for your electric house that can detach itself and move around during the day. Not only that, but you could theoretically sell energy back to the grid – “vehicle to grid” – that you don’t need during times of peak demand. It all makes a lot of sense, although predictably the US grid is not up to date enough to fully support this. We can be hopeful though that utilities will make rational choices as they look at grid updates and vehicle-to-grid policies vs. building new generation capacity.

Of course, if mobility is going to be more of a convenient on-demand service as opposed to buying a machine that puts me in debt and takes up a quarter of my house, I personally would rather buy the battery without the vehicle. In fact, if it is profitable to do so, I don’t see why a group of homeowners or investors wouldn’t get together and invest in a battery farm. Or how about a battery+data+solar farm? So it seems to me that if this policy change is made, it could drive significant change in behavior and physical infrastructure.