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Home Assistant integration

A local-polling Home Assistant integration for the Inowattio's Nemesis controller.

Features

  • Zeroconf auto-discovery (_nemesis._tcp.local.) plus manual host/port setup.
  • Polls the controller every 3 seconds over HTTP (/status and /data).
  • Exposes sensors for:
    • Grid power (W)
    • Controller state
    • IP address, API protocol, Unit name, Unit ID, Software version (diagnostic)

Requirements

  • Home Assistant 2026.4.3 or newer.
  • A Nemesis controller reachable on your LAN (default port 6969).

Installation

HACS (recommended)

  1. Add this repository as a custom integration repository in HACS.
  2. Install Inowattio from the HACS integrations list.
  3. Restart Home Assistant.

Manual

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

Setup

Go to Settings → Devices & Services → Add Integration → Inowattio. If the controller is on the same network it will usually be auto-discovered; otherwise enter its host/IP and port manually.

License

See the repository for license details.