this sounds like my drama.
my smart meter went in, and my first reading was 1881, then 2100, then 2000..
it's possible that, you had an estimated bill and you are having to catch up. They have recently increased unit prices too, so some increase is expected,
you have to check your actual bill, that has number of units used, and cost of each unit.
I'm lucky, I know I was using 8 units a day, every day over a 6 month period, then my smart meter went in, and I'm apparently using 25-35 per day, and literally never under 20 per day on the new meter,
I've been investigating and I've worked out its my lightbulbs, I've turned all my lights off at the fuse box, (a little annoying having no lights, but its more annoying spending £300 pm on utilities) with my lights off, the last 3 days I've used around 3kwh per day, this is going to bring my bill down x10 if i can keep this up!
I suggest you, query your opening balance, take a picture of your smart meter every day and monitor your usage,
I've attached the very basic excel document ive been using, just input your smart meter readings each day around the same time, if its increasing by alot each day, you will want to review whats using all that power. i tired to attach it, but it wont let me, so heres a picture of it instead, you can just recreate it
now i know for a fact i dont use 25+ KWH per day, but i dont know about anybody else, the in home device is garbage, and the app is even worse, all you can trust is the actually numbers on your bill, which should be the same as the numbers on your meter,
let me know if you need more info while this is fresh
Recently I got my first bill and it says I used 1277 kWh of electicity (no gas) for the 51 days since I moved in. Although bill numbers match the meter readings, this still sounds ridiculous for a 1 person / 1 bedroom apartment.
I don't even have TV or dishwasher. I do have 2 electric heaters but they have embedded meters and show 400 kWh for the whole period together. I can't belive there is something in my flat using twice more power than heaters.
There is definetly something wrong with these smart meters.
Well done Paddy, you have all the data to back up your full claim, SP will have to pay you and also send a warning to all their EDMI ES-10A users. SP have a duty to warn everyone about how these meters react to commonly used halogen downlights.