You do not need dedicated energy storage scattered around. It is far more useful to build large storage systems in one place then connect them to the HV grid l

You do not need dedicated energy storage scattered around. It is far more useful to build large storage systems in one place then connect them to the HV grid like a normal power station. Then the energy can be exported to millions of homes and store energy from across the grid. And you get better economies of scale and lower installation costs. Distributed storage can make sense when it is colocated with a generator (like a wind farm) as it helps increase utilisation of the expensive grid connection.