From the BBC today about the price cap:
'It will mean an average household will pay £3,549 a year for their energy for typical use'.
There's two indicators in that sentence to show that £3549 is subject to 'it depends'.
Household size and typical use - now while people might be under the impression that two showers per person per day with a clean towel every time before putting clean clothes on that have been tumbled dried come rain or shine in a house where the heating is on 22 C 34/7/365 is what everyone does, it's really not, so if that's the way you roll, it's likely to cost more than that.
But people can surely work out that 1 or 2 people who go out to work every day and live in a well insulated flat are likely to use less than the average household and a family with a SAHP who are at home a lot in a 4/5 bed detached are likely to use more than average?
For anyone who doesn't understand their bills or can't do a bit of addition and multiplication, there's also calculators on energy company websites and the likes of Moneysaving Expert that will work it all out for you.
So how can it not be any clearer without making it a long sentence full of numbers, which we've established many people don't understand, that the price cap is not a maximum for all circumstances?
They'd have to say something like 'the price cap is £X which breaks down as A pence per unit for electricity plus B pence per day standing charge plus C pence per unit for gas plus D pence per day standing charge'. All these amounts will vary slightly depending on how you pay and, for electricity, where you are in the country.