Re: I like them
You don't need a massively expensive smart meter (professionally installed when you take a day off work) to monitor your consumption. As the name suggests, an Energy Monitor will do exactly that. They are orders of magnitude cheaper; mine was given to me free of charge under some energy efficiency programme. So simple to fit that your grandmother could do it.
The problem is that unless you've always been a complete muppet that's left the windows wide open in winter with the lights and heating on 24/7, or you become nocturnal, the scope for savings will be relatively small.
The truth is what they don't tell you - smart metering is all about rationing, firstly by making it prohibitively expensive to run cookers, washing machines and dryers in daylight or to use lightbulbs after dark, and secondly by compulsory personal power cuts if you don't comply.
As the Remainians found out to their cost, you really can't fool all the people all the time !
Whoops - JimboSmith beat me to it. Must be telepathy... have an upvote !