This grafana dashboard is using HomeAssistant to connect to my energy monitor ( Emporia Vue 2). We are then natively exposing metrics in prometheus format from HomeAssistant and scraping those with a Prometheus server/Grafana Agent.

Grafana Blog Post Here: https://grafana.com/blog/2021/04/15/learn-how-to-monitor-your-energy-use-at-home-with-a-raspberry-pi-grafana-and-prometheus/?src=li&mdm=social