My view is that smart meters don’t save you money, they make people worry about keeping warm thus forcing them to sit in the cold... a worry with so many of the older end.
I live in a decent sized 3 bedroomed house with a wood stove in the front room, gas central heating and loads of modern led lighting around the house and I pay around £75.00 a month and i’m currently £300 in credit so I certainly believe a smart meter will not make me better off... No way!!
I would worry tho if I had one that one day the system will be hacked.... And then who knows???????