Electric only household, no option of gas. Not able to install immersion or storage heaters so switching to economy 7 is a no starter.
Currently pay 28p per unit of electricity. Cheapest fix available is 67p per unit.
Usage last year (when we were paying 17p per unit) was 8000 units (largely thanks to electric radiators). With the standing charge, the total bill was just under £1500. This was covered by a direct debit of £125.
If we use 8000 units at 28p each (current price), we'd be paying £2240. The standing charge has doubled, so would be about £2500 in total. A direct debit of £210 would cover this.
If we use 8000 units at 67p each, we'd be paying £5360 a year. With the standing charge, this would be about £5600. This would require a direct debit of £470 a month to cover, which we can't afford.
Obviously we'll have to reduce our usage. We work from home so usually have the radiators on in the winter in the rooms we work from (living room and bedroom respectively). We don't heat the rooms much - usually to about 18 (any lower and we start to get mould - we need to run a dehumidifier for several hours a day as our home is very damp and this isn't helped by the fact that we have to dry washing inside as there's nowhere outside to dry it).
We're thinking of staying on the standard variable tariff, which we know will go up in October to about twice as much. Obviously if it increases again and ends up over 67p it would make more sense to fix. Unfortunately, by the time we know whether it will go up above 67p, this fix will no longer be available, and the new fix on offer would be even higher.
If you were in our position, would you fix now or stay on the variable rate? We'll reduce our usage either way.