Re: OK, but why ....
I don't want my leccy turned off on a whim so as I have my own generator (5kW of Solar Panels) I've put together a home grown battery system using 12v Car Batteries. It means that I can go without mains leccy for a couple of days and the contents of the freezer won't go off.
I'll get a 30kW battery late next year when I get an Electric Car. If I could I'd give two fingers to the Power Companies. Then they can stick their so-called smart meter up where it hurts.