FoxESS Community - Owners & Installers Forum

Posted: **Thu Feb 26, 2026 12:50 pm**

I finally have a beta version of my python script that seems to do what I want it to do, but it's only been coded with summer temps in mind. I still have plenty of time to extend it before things start to cool down around ANZAC day.

Currently it pulls solar production forecasts from solcast.com.au and forecast.solar and then it also downloads local BoM forecasts to try and predict air con usage.

While the program is configurable via a conf file, the software was based on my current power plan, which is $2.07/day with a discount of $1/day if no power is imported from the grid between 6pm and 8pm with free power between 11am to 2pm and a 15c Fit also between 6pm and 8pm.

Hopefully someone somewhere will also find it useful.

https://github.com/evilbunny2008/FreePowerMaximiser

Posted: **Tue Mar 10, 2026 10:36 pm**

After a lot more effort things are coming along very nicely and for those of you on Globird I've also written another script to estimate what your power bill for the day might be based on Fox ESS's rounded data from the API.

So I ran it last night after exporting finished at 8pm and the output from the script said we'd owe 24c, the actual bill was 23c.

Posted: **Fri Apr 10, 2026 11:22 pm**

evilbunny wrote: ↑Thu Feb 26, 2026 12:50 pm I finally have a beta version of my python script that seems to do what I want it to do, but it's only been coded with summer temps in mind. I still have plenty of time to extend it before things start to cool down around ANZAC day.

Currently it pulls solar production forecasts from solcast.com.au and forecast.solar and then it also downloads local BoM forecasts to try and predict air con usage.

While the program is configurable via a conf file, the software was based on my current power plan, which is $2.07/day with a discount of $1/day if no power is imported from the grid between 6pm and 8pm with free power between 11am to 2pm and a 15c Fit also between 6pm and 8pm.

Hopefully someone somewhere will also find it useful.

https://github.com/evilbunny2008/FreePowerMaximiser

Thanks, I will give this a try when I switch over to Globird.

FoxESS Community - Owners & Installers Forum

Free Power Maximiser python script to make the most of 3 hours of free power a day

Free Power Maximiser python script to make the most of 3 hours of free power a day

Re: Free Power Maximiser python script to make the most of 3 hours of free power a day

Re: Free Power Maximiser python script to make the most of 3 hours of free power a day