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Octopus Energy - £4k elec bill for 11 months?

90 replies

Watchoka · 13/08/2025 20:30

Trying to help my brother.

He lives in a 2 bed flat on his own and works in an office during the day. Only has electric.

When he moved in in 2023 Shell was the electricity provider.

Octopus took over Shell in Feb 24

Since he moved in he has paid £135 per month for electricity.

In January 25 Octopus sent him a bill for £4k without explanation.

There were a series of charges made to his account in one day and then credits made on another day and then charges made again (all on one day) all adding up to approx £4k. Again no explanation.

my brother called them and they said he had only been paying estimated amounts and he had now been billed for actual usage for the last 11 months (amounting to £4k in 11 months)

I queried with Octopus whether the charges related to electricity used more than 12 months ago (back-billing) and they said no. They said they checked the account and the charges were correct. They did say that they attempted to install a new meter in May 25 but couldn’t. They didn’t say why they were installing a new one or whether the old one was faulty.

I’ve checked the usage amounts on all his bills and they just don’t add up for one person in a small apartment who is out most of the day.

The Customer Service Advisor appeared almost ecstatic when he came back to say the £4k for 11
months still owed.

I’m not sure where he goes now. The billing just doesn’t make sense and no real explanation has been given about the charges piled on in Feb 25.

Anyone had a similar experience please?

any help would be very much appreciated please

OP posts:
Watchoka · 14/08/2025 08:30

Thanks @Rosybud88glad to hear you got it sorted finally despite it taking over a year! Annoying and stressful I bet

OP posts:
Rosybud88 · 14/08/2025 08:18

Go straight to the energy ombudsman!

My complaint has just been resolved - it started in April 2024!!! I have no kind words to say about Octopus - I think they are pretty disgraceful tbh.

I was sent a £1500 approx bill out of nowhere. The bills were beyond confusing, nobody would explain anything, nobody would look into anything. It was an absolute farce! I complained - they wouldn’t put a thing in writing but offered to reduce the bill by £300 despite not admitting any fault or explaining what had happened. Wouldn’t reply to emails, wouldn’t call when they said they would. I knew something was wrong so went to the Ombudsman.

Octopus had managed to merge 2 accounts of mine, one from a previous address and one for current address, an absolute mess to be frank and something they aren’t allowed to do. It took months of unpicking and delays from Octopus but I am finally there. You aren’t required to pay the disputed bill until you have a resolution with the Ombudsman in my experience so it is worth him doing this anyway.

FarmGirl78 · 14/08/2025 08:18

The first thing he needs to establish was there an opening read taken when he moved into the property. It might be a week or so out but that'll be close enough.

GAJLY · 14/08/2025 08:16

MemorableTrenchcoat · 14/08/2025 07:58

Meters have a certification life, and must be replaced when it expires. There is also a type of meter (radio teleswitch), which rely on a radio signal which has now been discontinued, so these are all being replaced. Plus, as we all know, the government is very keen on upgrading every property to a smart meter. So, no, a supplier is unlikely to be doing anything nefarious here.

Yes same here, my energy company replaced my meter for this same reason.

Wolfpinkola · 14/08/2025 08:08

I would get the energy ombudsman involved and that will shut them up for a couple of weeks at least. Octopus are quite good at emailing back but they should be investigating this properly.

MemorableTrenchcoat · 14/08/2025 07:58

Watchoka · 14/08/2025 00:10

Thanks @OneNeatBlueOrca I’ll do that

@GAJLY- I’ll check

I do wonder why out of the blue they recently tried to install a new meter. Makes me suspect that they are aware the meter has been faulty (and this relates to the large historic charges) and they’re changing the meter rather than admitting it but I could be way off course. Good way to check will be to see if readings match latest charges

Meters have a certification life, and must be replaced when it expires. There is also a type of meter (radio teleswitch), which rely on a radio signal which has now been discontinued, so these are all being replaced. Plus, as we all know, the government is very keen on upgrading every property to a smart meter. So, no, a supplier is unlikely to be doing anything nefarious here.

Watchoka · 14/08/2025 07:52

@LakieLady interesting point - I’ll check what his reading in November 24 was and compare to estimates

he has been taking readings each week since about May and usage no where near what he was previously billed for despite no changes in how using electricity.

so difficult to navigate all this

OP posts:
MemorableTrenchcoat · 14/08/2025 07:52

Maxme · 13/08/2025 23:43

We had a similar overcharging problem with octopus. Basically the old meters (with dials rather than digital displays) are in imperial measure rather than metric. This means the numbers go up approx 3x faster due to the conversion.

When we moved to octopus they marked us as imperial and charged us 3x amount even though display was clearly digital.

As your 4k figure is approx 3x larger than expected this may be the same issue. So check your daily usage and that the meter is digital and if approx 3x then ask for it to be logged as a formal complaint.

Edit: you can see on gas bill what unit you are being billed in matric should be in m3

Edited

This only applies to gas meters. Electricity meters have always measured and displayed kWh.

InNewYorkNoShoes · 14/08/2025 07:47

I have been arguing with Octopus for 2 years about them insisting our bill is 4K too.
Average sized new build, no one home all day. When we come over in the evenings we are careful what we use.
They change our direct debit payments with no warning so they randomly take £400 or £500 out of my account leaving me with less money for the month. I have complained so many times and they never reply to complaints.

LakieLady · 14/08/2025 07:45

I’ve asked him to check that the MPAN on his meter matches the MPAN on his bill.

That's an excellent plan. Someone I know was charged a ridiculous amount and it turned out that the energy co were using readings from the wrong meter.

This was in an enormous Victorian house that had been converted into 13 flats. Around half of them were being charged for the wrong meter, and many of them had changed supplier several times.

That was 13 years ago, I wouldn't be surprised if they were still trying to unravel it now! Friend moved out a few months after it came to light and never heard any more about it.

MargaretThursday · 14/08/2025 07:42

That's nearly what where I work pays! They do have solar panels, but we're talking about several large rooms (up to 200 people size), used 7 days a week.

LakieLady · 14/08/2025 07:38

He needs to check the readings on all his previous bills. Were they actual readings, or estimates?

If they had been overestimated, and then an actual reading was made which was significantly lower than a much earlier estimates it can sometime happens that instead of crediting an account with the difference, the system charges for electricity that it should be crediting the account with.

It's called "round the clock" billing and companies are supposed to have debugged the software to prevent it, but sometimes it still happens.

hattie43 · 14/08/2025 07:37

This is why I hate utility companies . No one stops to think sensibly about how unlikely it is for a small flat to use that amount of electric in 11 months. It’s just a complete lazy cop out to say he used it he pays it .

shuffleofftobuffalo · 14/08/2025 07:26

They didn’t as they were due a refund not a big bill to pay. But they did question it (it was thousands) and octopus could never really explain why they were due such a big refund, just paid it out - same sort of relatively vague explanation as your brother has had.

Watchoka · 14/08/2025 07:23

thanks @shuffleofftobuffalo did they go through the complaints system and then ombudsman also?

OP posts:
shuffleofftobuffalo · 14/08/2025 07:18

the meter exchange will most likely been to do with the smart meter programme - suppliers are under pressure from govt to change old meters for smart meters. However, about 1/5 properties can’t have one because the meter won’t commission due to location, thick walls, too many storeys up in the air etc. Meters in basements of blocks of flats often won’t commission.

Your brother’s next avenue is to formally complain and that then gives him a route to the Energy Ombudsman. You might find he does owe the money but you’ll probably get a better explanation because octopus will have to look into it thoroughly.

if the move in date octopus have is incorrect that’s easily rectified by providing his tenancy agreement. That will knock a year’s usage off.

someone I worked with recently got a huge refund from octopus in similar circumstances, they couldn’t really explain it - same situation but a credit rather than a debit.

Watchoka · 14/08/2025 00:10

Thanks @OneNeatBlueOrca I’ll do that

@GAJLY- I’ll check

I do wonder why out of the blue they recently tried to install a new meter. Makes me suspect that they are aware the meter has been faulty (and this relates to the large historic charges) and they’re changing the meter rather than admitting it but I could be way off course. Good way to check will be to see if readings match latest charges

OP posts:
GAJLY · 14/08/2025 00:04

Does the latest meter reading match with the latest statement?

OneNeatBlueOrca · 14/08/2025 00:01

If you refer it to the energy ombudsman, they'll start investigating it and they'll also call off the dogs. Meaning, the energy company will stop chasing for a while.Because the ombudsman is involved. He won't be on the receiving ends of any demands while it's being investigated

Watchoka · 13/08/2025 23:57

Sorry just realised I missed some of the newer responses posted . Thanks all for your advice on what to do next - invaluable. He’s burying his head in the sand about this as he can’t cope but he also can’t pay hence me and my sister looking at this for him.

thanks again

OP posts:
owlyboo · 13/08/2025 23:56

The agency will have a record of the meter reading I would have thought on file.

he absolutely shouldn’t pay as there’s no way it would be that much for 11 months definitely seek help

StevieAnnSENMum · 13/08/2025 23:55

Watchoka · 13/08/2025 23:50

Thanks all. Meter is in the basement of the block and I’ve asked him to check that the MPAN on his meter matches the MPAN on his bill.

he moved into the block in 2021 he rents via an agency. He can’t recall whether a reading was taken by agent when he moved in. Octopus account refers to him moving in in June 2020.

Usage according to account was at an all time high in 2024 and then dived in 2025 but no change in circumstance.

Octopus has no interest in helping get to bottom of it or admitting that the amount doesn’t make sense for a single man in a flat over 11 months. The service bloke talked about realizing previous amounts were only estimates and then the apportionments weren’t fair so then it was reapportioned and this is why numerous large charges and credits on accounts. This told me nothing.

All they said was pay. They said to him he could pay £990 for the next few months to pay it off so even the repayment they offered wasn’t reasonable or affordable for him.

I’ll ask him to ask his neighbours about this

thanks all

Is he able to find the documents he was given when he first moved in? He can then do 2 things. 1.)Take a picture and email it over to Octopus showing the date that his tenancy agreement started. 2.)See if there's an opening meter reading on any of the documents.

Ideally, he needs to call Octopus to get them to check the MPAN on the National Database, which Octopus employees have access to. Check that the MPAN on his account matches his exact address and the MPAN on his meter box.

Did they give a reason as to why they can't install a smart meter? Generally, tenants need permission from the landlord to install a smart meter for their property. If this isn't the reason that they won't install one (that he hasn't asked for permission), then he needs to ask for the exact reason for the refusal.

Also, you can email the CEO of Octopus (though I believe he doesn't read his own emails. People who work with him do) and don't be afraid to lodge a complaint with the Energy Ombudsman.

Open an email thread, too. I always recommend having a paper trail where possible.

Watchoka · 13/08/2025 23:50

Thanks all. Meter is in the basement of the block and I’ve asked him to check that the MPAN on his meter matches the MPAN on his bill.

he moved into the block in 2021 he rents via an agency. He can’t recall whether a reading was taken by agent when he moved in. Octopus account refers to him moving in in June 2020.

Usage according to account was at an all time high in 2024 and then dived in 2025 but no change in circumstance.

Octopus has no interest in helping get to bottom of it or admitting that the amount doesn’t make sense for a single man in a flat over 11 months. The service bloke talked about realizing previous amounts were only estimates and then the apportionments weren’t fair so then it was reapportioned and this is why numerous large charges and credits on accounts. This told me nothing.

All they said was pay. They said to him he could pay £990 for the next few months to pay it off so even the repayment they offered wasn’t reasonable or affordable for him.

I’ll ask him to ask his neighbours about this

thanks all

OP posts:
OneNeatBlueOrca · 13/08/2025 23:50

I'd refer it to the energy omsbudsman. If the readings are wrong, they'll sort it out and they'll find out.

Iwrotethelyricstoaxlf · 13/08/2025 23:46

how long does the 4k span over.

There’s something about it charging back over 12 months.

He needs to do a reading and then submit another possibly each week to get a base line on what the meter is reading/what he’s using.