Hi there I have had a ground source heat pump for 20 years and solar pannels for most of that time. I have just had a fox system installed with a 3.68 inverter and three batteries combined 17.82kwh.
I have Octopus cosy and the PPV which the installer opted for does not make best use of the 3x low cost periods - I read on the forum to go to scheduler and manually input these periods which I have done successfully (I think) but my question is do I also need to schedule when the PV inputs or will this just happen automatically?
Here is an example work mode screenshot, and you can see although this is for discharge, you can see the PV option (toggle on/off doesn't seem to work for now)
Here is my own schedule for Octopus Cosy, and yes it will use PV power to charge the battery, as the energy has to go somewhere.
You will see in the first charge session, I only charge to 40% as I don't need 100%
The second session, I do let it go to 100%... note that once it reaches 100% it can start to discharge!
If you want the SoC to remain at 100% for the start of the expensive 16:00 period, then you want to set it to 'Backup' or 'Standby' depending on your needs.
The third charge, again I only want to charge to 40% SoC... again see above if you need 100% and to 'hold' the 100% SoC until the end of the cheap period.
And further to your question directly... there is an option in the work mode schedule on what to do outside of the times you have programmed... in normal use, you would set to 'Self-use' or 'Feed-in' This is at the bottom of the work mode scheduler and is called 'Remaining Time Mode'
Self-use, will allow the battery to drop from 100% SoC to around 95-96% then it will climb back to 100% in a cyclic fashion. If you don't want this, then set to 'Feed-in' and the SoC will be used, but not topped up from PV.
The second session, I do let it go to 100%... note that once it reaches 100% it can start to discharge!
If you want the SoC to remain at 100% for the start of the expensive 16:00 period, then you want to set it to 'Backup' or 'Standby' depending on your needs.
The third charge, again I only want to charge to 40% SoC... again see above if you need 100% and to 'hold' the 100% SoC until the end of the cheap period.
And further to your question directly... there is an option in the work mode schedule on what to do outside of the times you have programmed... in normal use, you would set to 'Self-use' or 'Feed-in' This is at the bottom of the work mode scheduler and is called 'Remaining Time Mode'
Self-use, will allow the battery to drop from 100% SoC to around 95-96% then it will climb back to 100% in a cyclic fashion. If you don't want this, then set to 'Feed-in' and the SoC will be used, but not topped up from PV.