Connect an Eastron SDM120 or SDM630 Modbus energy meter to an ESP32 and Home Assistant using ESPHome, RS-485, verified register addresses and import/export kWh sensors.

Quick Summary (TL;DR):An ESP32 can turn an RS-485 Modbus energy meter into a completely local Home Assistant energy monitor. For single-phase circuits, an Eastron SDM120-M/Modbus-class meter is one of the easiest DIN-rail choices; for three-phase, solar, EV charging or more…