Tasmato PlugIn - Sonoff Pow

Is there a way to bring some data from Sonoff Pow into the NavBar - for example the power consumption, the current or the voltage?

And by the way - in contrast to that, the symbol color suggests the wrong operating state.

In my opinion RED is danger = power is on, GREEN is not danger = power is off. At the moment this icon color has a different meaning - in my opinion.

No it doesn't. Post an issue on the repository requesting an enhancement.