This simple prometheus exporter collects data from powerfox poweropti devices via their local HTTP RPC endpoint. No cloud service subscription is required.
Verified with poweropti+ and a polling interval of 15 seconds.
pip3 install prometheus_client
python3 ./powerfox_prometheus_exporter.py --prometheus-port 8080 --powerfox-ip 192.168.1.120
Replace 192.168.1.120 with your powerfox's local IP address.