That's what ours is going to go up to, probably a bit over - Martin Lewis has calculated that if you're paying £300 now you'll be paying £495 in October and £510 in January and our direct debit is £318. We're looking at replacing our 20+ year old Dimplex panel heaters and storage heaters with new ones which are much more efficient, but the situation is vastly complicated by this stupid THTC tariff we're stuck on where all the heating stuff is on a separately-metered circuit that's switched on and off by the electricity company at random times based on the weather forecast. They're discontinuing it in the next year, but I can't seem to find out (a) what will happen, i.e. will we get both circuits going into one meter or will it stay on two meters so we have the option of an economy 7 tariff, (b) when it will happen, (c) whether the meters will get changed at all, given our village can't have smart meters because there's no signal for them. We don't want to spend a fortune because we're hopefully building a new house and moving into it over the next two years, but at the same time, if we want to sell this place once the new one is built, we need to sort it out to help the sale.
My mother is most annoyed that her energy company wants to put her direct debit and it's not quite sinking in for her just how big the price rises have been because she's in credit at the moment. I've tried explaining that the bills are going to nearly double again in the autumn, but she's not quite getting it at the moment. She's in the process of looking round various retirement communities (she'll be 83 next month) and will be downsizing from a 4-bed house to a 1-bed or 2-bed apartment, which will help considerably with her utility bills and council tax, although if she goes into the one I think she'll end up at, there's a community fee of around £9k a year towards maintenance of the communal buildings and grounds, so I guess it'll cancel itself out in the end.