You might need to wait for a first full billing period for the rebate to be applied.You don't say what rebate, the federal $300, or it might be the QLD state $1000 if you live there. As far as I have gleaned, the rebate goes to the electricity account, not the property, so if you move it transfers with the person the rebate was applied to, and can't be refunded (for example where) the owner does not get a new property / account, say travels for a period etc.