Your meter might be sleeping! Press one of the buttons on the meter to see if it wakes up.
If you have a prepayment meter and the screen shows the word "OFF", then you will need to reconnect that meter before you can use electricity or gas.
You can read how to reconnect your meter here.
If you’ve tried the above and it hasn’t turned your power back on, or you’re having trouble following the reconnection instructions, get in touch with us and one of our team will help.