AC1 5.0 + EC4100 h7 + HA + Predbat (UK Octopus Cosy) (success - working config)
After spending over a year to install solar panels, inverter and battery I have taken the plunge and moved to Octopus Cosy. I found Predbat shortly after, some of the Fox ESS examples were a bit out of date so I've taken a bit of time to build my own and wanted to share the config file in case anybody else might find it useful. It runs off the work modes and charge_rate/discharge_rate, I've had it running for over two weeks now and works perfectly including free electricity sessions, I don't export.

Details on my set up:
AC1 5.0 (Manager 1.78, Master 1.70, Slave 1.02)
EC4100 h7 28.2 kWh
HAOS 2025.9.4
nathanmarlor /foxess_modbus 1.13.6
UK Octopus Cosy

All feedback welcome :)
Attachments:
foxess ac1.txt.pdf
(81.92 KiB) Downloaded 18 times