Same here. I built up a healthy cushion when we were paying £127 a month on a 2 year fixed tariff. When it ended last October, I upped it to £150. Still have just over a hundred quid in surplus but using less than £150 a month at the moment. I’ll probably fix again after the next price cap in July.That depends upon what sort of account you have set up with them. If you pay monthly, but based on your annual consumption/12, then you will overpay in summer, underpay in winter - which is what I do. The recent large variations in energy costs, threw everyone's consumption/12 calculation out.