Check the top right of your bill to find your MCC (meter configuration code).
MCC12 or MCC16: You're in the right place
MCC01: Select standard 24-hour meter*
MCC02: Select day and night meter
*If your meter configuration is MCC01, but you have solar panels with a battery, an electric vehicle, or a heat pump, you are a good candidate for a smart tariff. Select Smart Meter (MCC12/MCC16). Note that once you activate your smart meter by selecting a smart tariff, smart tariffs will be the only option going forward.