meter problem

[fox1e]

hi can anyone help with a problem that i have,
I changed from a sunny boy inverter to a growatt and battery system.
I used the old meter [Elster A100C ] that was on my old system to record my solar produced to submit my FIT readings.
All was well until i force charged my battery overnight on economy 7 due to insufficient solar and found that my meter was registering the battery discharged as solar produced and giving false readings.
my meter is wired in line between the inverter and my mains supply
My question is do I need a different sort of meter which can differentiate between solar produced and battery discharged or do i need to alter the wiring somehow.
Any help on this problem would be greatly appreciated , I am a retired contracting electrician who used to work on the oil and gas sector so not used to this area of expertise

 

[Geoff1946]

I'm fairly sure you will have invalidated any FIT agreement you had by modifying your system. When I do my FIT readings I have to declare every time that my system hasn't been modified.

 

[binky]

Put the Sunny boy back in and wire the growatt on a separate supply. You can get away with your current set up provided you only charge the battery from your solar array. Your fit provider will notice if you keep charging from grid and discharging through your fit meter, and as Geoff says, this invalidates your fit agreement.

 

[michael8554]

Don't you just set the Inverter to "Zero Export" ?

So that the inverter only charges/discharges the battery to the house ?

 

[johnb2713]

Don't you just set the Inverter to "Zero Export" ?

So that the inverter only charges/discharges the battery to the house ?

That would do it, it would also stop the solar exporting as well.

 

[binky]

Don't you just set the Inverter to "Zero Export" ?

So that the inverter only charges/discharges the battery to the house ?

that wont work as thre FiT meter will still be back fed charge from the battery, which isn't all from the solar if you are charging the battery from the grid. .