Utility Meter - how can I trigger automation when the cycle resets?

When the Utility Meter integration resets per the configured cycle, is there an event or something I can use as a trigger for automation? I need to change the selected tariff.

I know I could watch for “all the tariffs change to 0” or create a schedule that mirrors the meter’s cycle, but the more elegant way would seem to be simply reacting to the “cycle reset event”.
Any ideas?