infertux / growatt_exporter

Prometheus (Grafana) / MQTT (Home Assistant) exporter for Growatt solar inverters

growatt_exporter

growatt_exporter is a standalone program written in C that can query Growatt solar inverters (tested on SPF5000ES so far) and output metrics compatible with Prometheus.

This allows to monitor PV production, battery status, etc. on a nice Grafana interface.

Build

apt install clang libbsd-dev libconfig-dev libmodbus-dev libmosquitto-dev mosquitto-clients
make

Kudos

The "Growatt OffGrid SPF5000 Modbus RS485 RTU Protocol" PDF document has been a very valuable resource. A copy of it is included in this Git repository. Thank you to the original author for their work.

Other brands

Would like to monitor Epever/Epsolar Tracer solar charge controllers instead? Here is a sister repository for that: https://github.com/infertux/epever_exporter

Other approaches

• Blog post: https://www.splitbrain.org/blog/2023-11/03-growatt_and_home_assistant
• Reading Modbus registers via Home Assistant: home-assistant/core#94149
• https://github.com/rspring/Esphome-Growatt

License

AGPLv3+