Show phantom energy usage

Is there an easy way to show phantom/vampire/ghost energy usage? So that would be the minimum electricity load daily. It’s a useful metric to see how much always-on devices are consuming. Would be nice to show that in the energy dashboard.

Creating helper “utility meter” and increasing it trough automation every hour by this energy usage should be one of the solutions. But best way is to install not so expensive meter (e.g. shelly em3) and you will have real values.