Read loads of threads on here about people being surprised by their bills. I appreciate that some people struggle to read meters but Smart Meters are more common nowadays and people do get regular bills.
It seems that there are people who are unaware of how much they pay per KWH, their standing charge and roughly how many units they use - and how it can vary.
For information - the 'average house' is supposed to use 2400 KWH of electricity and 12,000 KWH of gas per year.
That's what the price cap is based on - with the appropriate charge per KWH and a standing charge.
Knowing what you pay per month isn't that helpful if you don't know how much you use - and that's when the new charges and tariffs are going to hurt.
If you know what devices use power, you may be able to make changes.
I know some people know this and how much power they use but I worry that there are many people who don't and will get really caught out.