1yvonne2:

 

The invoices also do not give you meter readings so you have no way of checking whether your electricity usage has been correctly charged.

 

I doubt that there is "no way of checking" that your usage matches your meter reading. If you know you're last meter reading from your previous supplier then you can check by using the same equation as people usually use to check their invoices:

Opening meter reading + accumulated usage = closing meter reading

If you are used to manually recalculating all your invoice meter readings then you would now have to keep a manual record of the last calculated meter reading at the end of each billing period. I can sympathise with you because that is a major inconvenience when the usage data is broken down into many small periods (as @itxtme points out: "On a side note I felt they actually gave a really good invoice though, of what you used and when versus the big players like Genesis.  Yes no actual reading number but usage was very clear based on the day, time (split into Am,Pm,Evening,Late,Night) and units consumed.")

A more fundamental problem with meter readings is that we cannot check the meter reading is 100% correct unless we are watching (or video recording) at the meter at the exact moment the billing period ends. As most suppliers don't provide the exact "reading" time, a complete check of the billing is only an approximation anyway.

I expect that meter readings will eventually disappear from most, if not all, bills once the electricity industry completes the transition from monthly/bi-monthly meter readings to continuous in-day meter readings.