Just a rant really - as usual consumers are powerless about this sort of thing. I've just had a look at my Ovo account for combined gas and electricity. I have to pay £285 a month and as usual am hundreds of pounds in credit. Last month (as always in the summer) the actual bill was about £70, most of which was standing charges. At one point a couple of years ago I was about £1200 in credit and had to submit a complaint to get some of it refunded as they initially refused. I have no idea why utility companies are allowed to operate in this way. We have never been in arrears, own the house, have been here a decade, and have no trouble paying other bills, which we only have to pay when they are due and for the amount actually used/owed- such as mortgage, council tax, mobile phones etc. I'm fortunate in that for us the DD is easily affordable - but if I was struggling or on a limited budget it would be really detrimental for such large sums to be taken in advance and just be sitting there in Ovo's coffers 'in case' of large winter bills. I can manage my own money, thank you very much. How has this become the norm? (I know I could contact them to try to get my DD lowered and get some of the credit refunded, but why on earth should I have to do all that?)