My usage graph on the web site is showing electricity usage of between 0.7 and 0.11 kwh per half hour overnight between 10.30 pm and 6.30 am. During the day, my usage is as expected, but there are lots of 30 minute times when my usage is zero, so the overnight cannot be appliances that are continually turned on?
I then looked at a time when I was on holiday, and virtually everything in the house was turned off - this was in the summer, so no heating, immersion heater, all pcs and tvs turned off. In this case, I had between 0.5 and 0.7 kwh between 9pm and 5.30 am, and virtually zero during the day?
What could I have that uses electricity overnight but not during the day, or is this not a true reading?