Currently, when using an utility meter with “n” number of tariffs, it creates n number of separate entities and a select component to cycle through those tariffs for the defined cycle. To seethe total consumption on the said cycle, you have to create a template sensor that adds all tariff values or create another utility meter without a tariff on the same cycle or add those values by yourself.
This is slightly cumbersome, it can easily be simplified if a “total consumption” state attribute is added to the select entity or an auto generation of another entity with cycle total.