I’m not looking forward to my bill this month. The calculations have gone crazy and it seems to have happened after the latest update - but cant be sure as it is newly setup.
Any ideas why this might happen?
When your energy sensors become unavailable the are reporting 0 rather than ‘unavailable’ or ‘none’.
When your energy sensors become available again they change from 0 to the normal total. This is seen as a massive energy increase by the Energy dashboard.
You need to either provide an availability template for your sensors or filter them through template sensors where this can be done.
See here for some examples:
https://community.home-assistant.io/t/how-to-prevent-entity-from-resetting-to-0/369363