The bottom line is you need someone locally to check things out - obviously difficult if you are not there and even more difficult with the current restrictions, but I think it will be the only way to resolve this.
At the risk of repeating things… Further theorising is just that, theorising. You now need to get someone involved who has the right test gear to establish what is going on.
I do have an electrician but he hasn’t been much use. He was present when EDF/Enedis came to check the Linky meter in mid September. It took three months to finally get a technician to come out.
According to him, he switched off the power so they could check if the Linky meter was still drawing power and then they changed some setting on the Linky meter which is why the power consumption dropped to half for that month. So we thought the problem was solved and maybe EDF just didn’t want to admit to their mistake but then it went through the roof again in October.
I think that maybe the Linky meter should be replaced and moved inside the property.
No point in looking back and saying this or that ought to have happened.
You are where you are. You now have evidence of steady consumption that you cannot account for.
You need someone on site. If you do not trust the electrician you used, have you any acquaintances who can recommend someone else? Ask the mayor. Is there a local estate agent who might have contacts?
At the moment you are just going round and round in circles hypothesising and that will continue until someone trustworthy does a site inspection.
Possible faulty past consumption is a bit of a red herring - the problem is to explain the present consumption. 1000 kwh/month is about 1.4 kwh per hour, which could be a heater of some sort, or a big machine, or a lot of lights. An electrician or a competent DIYer should be able to isolate the circuit on which this is being drawn. That would be the first step, followed by an examination of that circuit.
As already said, not with that kind of load. More relevant though is that those pumps run very briefly, & not constantly (as is the manner of the OP’s consumption).
I’ve already had my electrician check and confirm my electrical sockets, consumption, etc. EDF/Enedis do not come into your property when they do the checks. They just check the meter outside. Even if I can isolate the circuit and prove that I am not using the electricity on my end, they will just say that the Linky meter is accurate and I must be wrong. I have asked for a technician’s report regarding September’s visit and they are not providing me with any information. They just say they did “tests” and there is no fault with the Linky meter.
Looks like the only solution to this stupid situation is to go completely off-grid and move to solar energy.
Get your trusted person with the keys to go in to the property and trip the disconnect so there is no power in the house note the meter reading… Email or inform edf of the time and date and meter reading stating you will not be responsible for power after this date. See what they will do. But as been mentioned now on numerous postings, there is nothing you can do so suck it up until you get over here, other than disconnecting the house from the meter. Armchair theorising isnt curing the problem.
Legally if you can prove either you are not using the electricity, someone else is or there is a fault they eventually have to deal with it, I had a year long battle with EDF and they will comply eventually, they hope you will give up on it, but persevere.
No, as Peter said you need your electrician back on the spot, with kit.
This is looking more and more like you should be able to get back your overcharged bills plus both electrician visits plus any charge by EDF made for their tech visit. Personally in case it’s the neighbours a visit by stealth would be better so they don’t switch anything off.
If your cameras are showing nothing and yet this is happening, why not get EDF to power down everything remotely? Marijuana plants might die but that’s not your problem.
Btw was the consumption pattern any different on either of the two weekend days?
And roughly where is the property? Given the difficulties visiting from the UK at the moment, I’m sure posters here would be happy to accompany your electrician for a visit if there’s anyone near enough.