Some countries are already (accidentally) solving this problem.

The problem there is that they can't upgrade the grid fast enough at the neighborhood level. Combine that with residential electricity contracts where you pay the spot market price, and suddenly you've got a whole bunch of people who want to source or drain electricity at the same time, with a total capacity which far exceeds what their local grid is physically capable of.

The solution is to change a grid connection fee which depends on the peak load, where drawing/supplying a steady 1kW during the day is significantly cheaper than doing 12kW for 2 hours and 0kW for 22 hours. You're incentivized to spread out your load, so you are less likely to fall for needless consumption of "free" electricity.