Emonio P3 Integration for Home Assistant

Custom Home Assistant integration for the Emonio P3 three-phase power measuring device using Modbus TCP.

Features

• Automatic device discovery via config flow (UI-based setup)
• 32 sensors: 4 phases (A, B, C, Total) x 8 measurements each:
  • Voltage, Current, Power, Reactive Power, Apparent Power, Frequency, Energy, Power Factor
• Efficient batched Modbus polling via DataUpdateCoordinator

Installation

Via HACS (recommended)

1. Open HACS in your Home Assistant instance.
2. Go to Integrations and click the three-dot menu.
3. Select Custom repositories and add this repository URL with category Integration.
4. Search for "Emonio P3" and install it.
5. Restart Home Assistant.

Manual

1. Copy the custom_components/emonio directory into your Home Assistant config/custom_components/ directory.
2. Restart Home Assistant.

Configuration

1. Go to Settings > Devices & Services > Add Integration.
2. Search for "Emonio P3".
3. Enter the IP address of your Emonio device and the Modbus port (default: 502).
4. The integration will test the connection and set up all sensors automatically.

Usage

After setup, 32 sensor entities are created under a single Emonio P3 device. You can add them to dashboards or use them in automations:

automation:
  - alias: Alert on high power consumption
    trigger:
      platform: numeric_state
      entity_id: sensor.emonio_xxxxxx_total_power
      above: 5000
    action:
      service: notify.notify
      data:
        message: "Power consumption exceeded 5000W"

Requirements

• Home Assistant 2024.1 or later
• Emonio P3 device with Modbus TCP enabled
• Network connectivity between Home Assistant and Emonio device