Massive power usage, no one home

Of you don't have a heat pump or an EV there can only be a few things that will draw that power in your house.

Electric shower

Immersion

Electric over/hob

If you are sure these aren't on then I don't know....

Can I ask what size is your PV system? It might just be the CT clamps are turned the wrong way around and instead of showing export its showing as import. We had really bright sunny spells this week and would show big spikes in Export especially if no one was at home.

Can you take a screenshot of the day in question

Someone else using your EV charger?

Turn stuff off on trip switches on fuseboard. Note what you change. Do a few a day until you narrow down the culprit.

Would there be a crypto miner that starts up and then powers down?

Very little in a house that draws that load bar stuff people mentioned here

Did they install a hot water diverter?

Something like that is being triggered when you have Solar excess

Do you have a smart meter? You can monitor usage in great detail now through the esb network site, you'll just need your mprn to create an account.

You should then see similar data if you truely are pulling those numbers.

Mine for example

It looks like someone is stealing your electricity! You can see the PV on the graphs in blue so it's nothing to do with that being reversed. Dying to see where this thread is going .....

Simplest solution is download the esb data and graph it in excel. Job done

Download from source. ESB.

Where'd he say that ?..

Ah completely missed that

👍

Has no one suggested the obvious yet, ghosts ?

I wouldn’t even do it over 24hrs, I’d do it in a 30-60min interval where the app is showing that you are using 8kW+

e.g. In a 30min interval where you are using 8kW+ according to the app, you will see 4 units clock up on your meter in that 30mins… if you, for instance, only see 1 unit on the meter then you know the app is showing BS and you need to get the installer back.

Did you get any spikes today on the app since it’s a very bad day for Solar?

Not necessarily. It could be interpreting/reporting the Solar wrong. Just making it up but something like it’s got Solar production set for 3ph or something odd like that. The high readings seem to be only during Solar production which was why I asked if he had any spikes today as there will have been little or no Solar today

8kW+ should be easy to find and he has ruled out all obvious things. Very few appliances would pull that level of power.

Could it be because the weather is terrible that its the pull from the network to the battery to keep it at the minimum charge.