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 1 as doorbell sensor/opener
Tutorials Grafana Labs
Swimming pool temperature sensor with the ESP » jjk1's Website
Tutorials Grafana Labs
Shelly EM – Power Monitoring in Grafana / Influx – Mat's Hideout
Tutorials Grafana Labs
Grafana, Loki, and Promtail for Visualization on AWS EC2 Instance, by Mahesh Biradar
Basic Grafana dashboards - - Alibaba Cloud Documentation Center
Five eye-catching Grafana visualizations used by Energy Sciences Network to monitor network data
Grafana Dashboard Tutorial: How to Get Started
How I fell in love with logs thanks to Grafana Loki