Hi. I just already did account in bulb but it say first meter reading will be on 4th September and first payment on 9th September. We are move in on 14th August so does that mean I will pay for all using energy and gas from 14th August to 4th September on 9th September?

You need to contact whichever company is supplying the property right now, to arrange payment for your energy use from August 14 to September 9.