FoxESS Community - Owners & Installers Forum

Hi I am seeing these grid import spikes at the end of my force discharge schedule before it switchs to self use despite there being plenty of battery reserve it's a regular occurance but not every night any idea why?

My setup is 3 FD schedules to balance my feed in and battery min SOC to run the house over night, the reason for the 3 is I have 2 different feed in rates depending on the time of night and it gives me the ability to turn one off if I want to reserve more battery SOC. (might need this in winter)

1600-1800 = .06c Kw/h @5500w
1800-2000 =0.15c Kw/h @10000w
2000-2100 = .06c Kw/h @ 5500w

At the end of the FD cycle I generally end up with around 30% battery SOC which reduces to around 16% by the morning before the battery starts to charge again.

This setup has my bill in average credit by $1.90 a day so far.

Just to close the post,

I belive I found the issue. The FD minimum battery SOC was set at 30% this coincided within minutes of the FD end shedule on most days, but occasionally the minimum SOC was reached first which prompted the grid draw. A few tweaks to the schedule fixed the issue.