Which devices need how much power? To find out, there are measuring sockets such as the Shelly Plug S, which can also be read out via MQTT.
Dashboards Grafana Labs
Grafana Plugins - extend and customize your Grafana
Using the Shelly Plug to monitor Starlink's power consumption
Tutorials Grafana Labs
Shelly support group (English Version), Shelly TRV in Grafana show how excellent device working and support accurate temperature (No external temperature sensor added)
Tutorials Grafana Labs
Tutorial - Grafana Dashboards with Couchbase
Tutorials Grafana Labs
Shelly Plus Plug S Metrics
Tutorials Grafana Labs
Tunneling Plugwise Smile P1 Stats to Grafana - Lostdomain
Tutorials Grafana Labs