Suntaic inverter in Home Assistant

Setting up

In the box settings, enter your MQTT broker. Home Assistant creates the device MoniWatt for Suntaic automatically, with all sensors.

Sensors

• sensor.suntaic_monitor_pv_power, …_pv_voltage
• sensor.suntaic_monitor_load_power, …_output_voltage
• sensor.suntaic_monitor_grid_voltage
• sensor.suntaic_monitor_battery_voltage, …_battery_charge_current, …_battery_discharge_current
• sensor.suntaic_monitor_mode
• sensor.suntaic_monitor_pv_energy_today

What owners automate

• Run the pool pump or the water heater only when the panels produce more than the house uses.
• Get a message when the inverter switches to battery after a grid cut.
• Monitor a second home: alert if solar production stays at zero on a sunny day.
• Chart daily solar production in the Energy dashboard.

JSON API

GET http://moniwatt.local/api.json?key=YOUR_KEY

{"mode": "Grid", "pv_w": 3180, "pv_v": 288.0,
 "load_w": 1240, "out_v": 230.1, "grid_v": 232.4,
 "batt_v": 54.2, "batt_chg_a": 31, "batt_dis_a": 0,
 "pv_kwh_today": 14.6, "warnings": []}