Not so smart. Smart meters are supposed to make things easier for customers not if you are with Scottish Power yes you may get an accurate bill but the problem is what system will actually charge you. My annual bill should be about £640 even though I was £95 in credit and still in credit after last months bill the system increased so the DD from £73 to £76 or from £878 to £912. Numerous emails screenshots from the app pictures of the meter & IHD. They tell me to ignore the tariff data on the meter and the cost on the IHD because they are wrong. I can't get them to understand that the information on the meter and the cost on the IHD exclude vat.