I have a bunch of power plugs that send power usage to Home Assistant. I have a Helper in Home Assistant that sums all of those power plugs usage. Trouble is, of any plug is offline for any reason, then the helper records unknown, and I miss all of that data. Is there any better way to do this? Is it possible to have a helper that sums what it has instead of expecting all items? Should I do this a different way?
Thanks