I published a new Home Assistant add-on repository for my HVM6.2M PowMr inverter telemetry/control over an AIRcable MiniP5 TCP bridge. It has 1.2kW solar and a 5kWh battery. My motivation was to automate the battery usage when the kWh is most expensive with a timed use PG&E contract. It switches to battery during these hours and back to grid when power is cheap. The automation does a pretty good job and the installation is very easy using the AIRcable MiniP5. Just an adapter cable and configured to Serial-to-TCP.
Add-on:
PowMr Inverter (slug: powmr)
What it does:
- Polls PowMr inverter data over TCP
- Publishes MQTT discovery entities to Home Assistant
- Supports writable inverter priorities (output/charger source priority)
- Exposes link-health and stale-telemetry diagnostics
- Includes safe fallback behavior when telemetry is stale
Current release:
v0.1.16
Install:
-
Home Assistant -> Settings -> Apps (Add-on Store)
-
Menu (top right) -> Repositories
-
Add the github link
-
Install PowMr Inverter
-
Configure:
- inverter_host (MiniP5 host/IP)
- inverter_port (default 3333)
- poll/stale timing and MQTT options as needed
Notes:
- Works with amd64 and aarch64
- MQTT service can be auto-detected from Supervisor
- Dashboard/automation examples are in the repo docs
Feedback welcome:
- Issues/bugs: PowMrAddon/issues
- If you use a different PowMr model/firmware, please share response patterns so compatibility can be expanded.