I thought I was the only one, we usually get electricity bill around $450, give or take, this quarter it was $780! Also the gas bill was much higher than usual, but I know that my kids were running the heater a lot of the time, I thought that the gate was locked and it was an estimate meter reading, but it was actual, so I called AGL and apparently, as they claim, total usage was higher and peak usage was higher, so I went up to the next tier and the calculation formula changed. I'm still trying to figure it out as our daily routine didn't change and even the pool pump runs less hours in winter and only off peak!