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-A in front of reading

  • March 19, 2026
  • 7 replies
  • 57 views
B
Rank 1
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Hello,
What does “-A” mean in front of the meter reading ?
We do have soler panels, is it someting to fo with that ?
Thank you for any help.
Phil.

Best answer by BPLightlog

Hello BPLightlog
Thanks for your help.

The electricity meter is a KAIFA MA120.

Phil.

That’s useful - Kaifa are quite ‘free’ with their symbols. When you see a -A indication, the meter is showing your export reading. There are a few threads on the forum which discuss this. Here’s a clip from one 

 

7 replies

BPLightlog
Super User
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  • BPLightlogSuper User
  • Super User
  • March 19, 2026

Possibly ​@boleskine , what is your meter type?

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
B
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  • boleskine
  • Author
  • Rank 1
  • March 19, 2026

Hi BPLightlog

The Solar panels are PV with no battery storage.

BPLightlog
Super User
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  • BPLightlogSuper User
  • Super User
  • March 19, 2026

Hi BPLightlog

The Solar panels are PV with no battery storage.

Ok but you mentioned the meter reading … which meter type is it?

-A can often indicate reverse current (ie exporting energy) but different meters can show this differently.

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
B
Rank 1
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  • boleskine
  • Author
  • Rank 1
  • March 19, 2026

Hello BPLightlog
Thanks for your help.

The electricity meter is a KAIFA MA120.

Phil.

Hi BPLightlog

The Solar panels are PV with no battery storage.

Ok but you mentioned the meter reading … which meter type is it?

-A can often indicate reverse current (ie exporting energy) but different meters can show this differently.

 

BPLightlog
Super User
Forum|alt.badge.img+11
  • BPLightlogSuper User
  • Super User
  • Solved
  • March 19, 2026

Hello BPLightlog
Thanks for your help.

The electricity meter is a KAIFA MA120.

Phil.

That’s useful - Kaifa are quite ‘free’ with their symbols. When you see a -A indication, the meter is showing your export reading. There are a few threads on the forum which discuss this. Here’s a clip from one 

 

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
    B
    Rank 1
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    • boleskine
    • Author
    • Rank 1
    • March 20, 2026

    Hello BPLightlog
    Thanks for your help.

    The electricity meter is a KAIFA MA120.

    Phil.

    That’s useful - Kaifa are quite ‘free’ with their symbols. When you see a -A indication, the meter is showing your export reading. There are a few threads on the forum which discuss this. Here’s a clip from one 

    Hi BPLightlog,
    Thanks for the clarification.
    Regards,
    Phil.

     

      Ben_OVO
      Community Manager
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      • Ben_OVO
      • Community Manager
      • March 23, 2026

      ​@boleskine welcome to the OVO Forum community 👋. I hope you had a nice weekend.

       

      I’m glad to see that ​@BPLightlog was able to answer your question. Just to let you know ​@boleskine I’ve added the solar panels badge to your Forum account so that other members will recognise the kit you have installed. For more info on solar and smart meters we’d recommend having a look in our Forum library section here. And, of course, fire any questions to the community if you can’t find the answer you’re looking for in any of our existing material.

       

      Cheers!

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