Only need this to run local instance of NUT (server or client) also to perform auto shutdown of HA. It doesn't provide any integration (no entities).
Install and configure:
Settings –> Add-ons
“Home Assistant Community Add-on: Network UPS Tools”
To monitor remote NUT, it is only need to add simple integration:
Settings –> Devices & Services –> Add Integration
“Network UPS Tools (NUT)”
And provide host and credentials.
By default only basic parameters are exposed as sensors (check source of: sensor.py)
To enable apparent power and real power go to:
Settings –> Devices & Services –> Network UPS Tools (NUT)
Click on Device
in the Diagnostic section you can see +16 entities not shown. Click that.
Click disabled entity and change it properties by pressing enable.