sensor_power?
meter_watts?
what is actually the difference? isn’t sensor power also showing the current in watts? if so … why are they different?
THANKS 
I don’t know the device so can’t answer for sure, but I can provide a guess…
The binding will expose the channels that the device says it provides. In this case, it is probably supporting the MULTILEVEL_SENSOR and METER command classes, so the binding provides these for users to use. It may be that the device is just providing both classes with the same data - to make it more compatible with different software that might have a preference for one or the other.
The fact that they are slightly different in the image is probably just that they are sampled at different times…
If my guess is correct, it might be a good idea to remove one of the channels from the database to avoid confusion.