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Astraroy
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January 7, 2025
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I have FIT with new battery and inverter, do I have the right meters?

  • January 7, 2025
  • 82 replies
  • 2894 views

Wondered if anyone can answer my query

 

Im an existing FIT payment receiver (solar panels installed with single string inverter 11 years ago) so receive a decent FIT payment.

 

Recently had installed a EcoFlow 3.6kw inverter with 10kw battery storage, the generation meter was changed to a bidirectional meter as instructed and followed the correct schematic.

 

However the meter is showing a negative number and I can’t seem to work out what the solar panels are generating apart from what shows in the EcoFlow app

 

We charge the batteries up at night using an off peak rate and then any solar during the day tops the batteries up.

 

am I correct in thinking there should be another meter of sort between the solar panels and inverter just to monitor the generation from The solar panels?

 

installers seem to think by summer it will change to a positive but that’s no good to me right now when I’ve generated about 30kw of solar 

 

 

    Best answer by BPLightlog

    Actually, the NET meter is normally the correct one to use. It calculates the difference between any import from the grid and your generation. During winter and acknowledging losses in the system, if you are significantly charging overnight and then discharging during the day, it can show negative at this time of year. 
    You might just double check with your FIT provider as to which reading they will accept. As I mentioned, normally it’s the NET reading but some want the EXP reading. 
    There will be no other meter just for generation on a set up like yours (mine is the same)

    82 replies

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    BPLightlog
    Super User
    BPLightlogSuper User
    Super User
    August 11, 2026

    I think you can leave this as stand-alone thanks@Chris_OVO , I know the complete thread isn’t always read but the basic part is the NET reading. I was just trying to add a little more context as I have been discussing this subject recently 

    Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
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