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.
Shelly support group (English Version), Shelly TRV in Grafana show how excellent device working and support accurate temperature (No external temperature sensor added)
Basic Grafana dashboards - - Alibaba Cloud Documentation Center
Tunneling Plugwise Smile P1 Stats to Grafana - Lostdomain
Dashboards Grafana Labs
Loki - Access logs the smart way · Anais Urlichs
Shelly power monitoring plug input : r/grafana
Tutorials Grafana Labs
Building a Dashboard with Grafana, InfluxDB, and PowerCLI - Wahl Network
Home power monitoring using the Shelly EM with Grafana, InfluxDB, Node-RED and MQTT