shelly_3em_json_exporter_prom

What it is

A Prometheus monitoring setup for a Shelly 3EM three-phase energy monitor. It uses Prometheus JSON Exporter to poll Shelly’s local RPC status endpoint and turn the JSON response into scrapeable metrics.

What it collects

The exporter maps per-phase current, voltage, active power, apparent power, power factor, frequency, and energy counters. It also exposes total power and energy, device uptime, RAM, temperature, Wi-Fi RSSI, cloud status, and MQTT status.

Why it exists

Shelly already exposes the data locally, but dashboards and alerts need the data in a time-series system. This project is the thin bridge between the device API, Prometheus, and Grafana.