[astronautjones]

this is an exploit that allows an attacker to disrupt the electrical grid - even if it's only to the substation, that effects all of your neighbors that didn't encourage you to blindly support Tesla's endeavour. it's highly irresponsible to have this kind of control behind such a trivial login on something that connects to your power lines, something extremely dangerous. far from a "nitpick"

[generatorguy]

It doesn’t disrupt the grid anymore than turning a heater on and off.

[sangnoir]

Can your heater push power into the grid?

[generatorguy]

An increase in embedded generation is the same as a decrease in load to the system. So turning a heater off is akin to “pushing power in to the system”, unless the embedded generation is larger than the load on a feeder, in which case the direction of power flow would be reversed, which may or may not cause problems depending on the protection settings at the substation.

The peak system load and generation on the Western North American grid is 167,000 MW. There is so much inertia there a 10kW power wall isn’t going to do anything.