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Oscarmax.
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- June 16, 2024 at 3:39 pm#282124
I’ve noticed we have more posts relating to electricity tariffs and setting up of EV home charging procedures and was wondering if there was enough interest to set up a permanent sticky.
There is a fair amount of money to be saved charging from home and getting the correct tariff could save more.
I don’t really have much expertise in the topic but I’ve noticed there are those who’ve been using a number of tariffs and actually change tarrif between summer and winter so there must be money to be saved for members to go to the bother.
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- December 1, 2025 at 5:02 pm #318746
Apologies if this has been covered already.
Is there a site to estimate annual cost of electricity?
I’m with Eon Next and they are offering smart charge tariff at 6.5p off peak, 30p peak and 60p a day standing charge.
Currently use about 4000kwh per year without EV.
Estimate doing 8000 miles pa and reckon 6000 would be at home.
Eon app isn’t helpful as reckons estimate annual total usage at 2700kwh – 1300 less than we use already. It does split usage as roughly 50/50 between peak and off peak.
I’ve made a guess at 6000miles at 3 miles per kwh for an Ioniq 5 84kw rwd at 2000kwh.
That gives 6000kwh total, splitting that 50/50 at rates above and adding standing charge I got £107 per month.
Am I anywhere near?
If I am that’s only about £7 more than current tariff which would be amazing if I could run car for £7 a month plus cost of charging 2000 miles at public chargers.
December 1, 2025 at 7:08 pm #318758Apologies if this has been covered already. Is there a site to estimate annual cost of electricity? I’m with Eon Next and they are offering smart charge tariff at 6.5p off peak, 30p peak and 60p a day standing charge. Currently use about 4000kwh per year without EV. Estimate doing 8000 miles pa and reckon 6000 would be at home. Eon app isn’t helpful as reckons estimate annual total usage at 2700kwh – 1300 less than we use already. It does split usage as roughly 50/50 between peak and off peak. I’ve made a guess at 6000miles at 3 miles per kwh for an Ioniq 5 84kw rwd at 2000kwh. That gives 6000kwh total, splitting that 50/50 at rates above and adding standing charge I got £107 per month. Am I anywhere near? If I am that’s only about £7 more than current tariff which would be amazing if I could run car for £7 a month plus cost of charging 2000 miles at public chargers.
Not that I’m aware of, but you shouldn’t be charging your EV at peak times on a 2 rate tariff.
A simple spreadsheet (excel) would be ideal.
4000kWh peak @30p = £1200
2000kWh off peak @ = £130
+ VAT @ 5% £66.50 if not included in the above prices
December 1, 2025 at 8:09 pm #318762I wouldn’t be charging on peak rate, I thought they were getting at just under 50/50 rate between peak & off peak was for car plus things like dishwasher, machine machine etc being used at night plus 6 hours with anything on at lower rate but that seemed very optimistic TBH.
December 1, 2025 at 9:19 pm #318765@Kezo I wouldn’t be charging on peak rate, I thought they were getting at just under 50/50 rate between peak & off peak was for car plus things like dishwasher, machine machine etc being used at night plus 6 hours with anything on at lower rate but that seemed very optimistic TBH.
Of course your right 🤭
I think, thats what they estimate, but no one knows other than you on how many miles you will drive. When I have done quotes, there has been a box to enter the estimated miles you will drive.
December 3, 2025 at 10:54 pm #318855Apologies if this has been covered already. Is there a site to estimate annual cost of electricity? I’m with Eon Next and they are offering smart charge tariff at 6.5p off peak, 30p peak and 60p a day standing charge. Currently use about 4000kwh per year without EV. Estimate doing 8000 miles pa and reckon 6000 would be at home. Eon app isn’t helpful as reckons estimate annual total usage at 2700kwh – 1300 less than we use already. It does split usage as roughly 50/50 between peak and off peak. I’ve made a guess at 6000miles at 3 miles per kwh for an Ioniq 5 84kw rwd at 2000kwh. That gives 6000kwh total, splitting that 50/50 at rates above and adding standing charge I got £107 per month. Am I anywhere near? If I am that’s only about £7 more than current tariff which would be amazing if I could run car for £7 a month plus cost of charging 2000 miles at public chargers.
Just checked my ohme app and for the year 8000 miles am on octopus intelligent 7p / kw/hr whatever it is. 2444kw/hr and cost £177. 90% is home charging, the rest is Tesla chargers at 49p/kw hr
December 3, 2025 at 11:04 pm #318857Apologies if this has been covered already. Is there a site to estimate annual cost of electricity? I’m with Eon Next and they are offering smart charge tariff at 6.5p off peak, 30p peak and 60p a day standing charge. Currently use about 4000kwh per year without EV. Estimate doing 8000 miles pa and reckon 6000 would be at home. Eon app isn’t helpful as reckons estimate annual total usage at 2700kwh – 1300 less than we use already. It does split usage as roughly 50/50 between peak and off peak. I’ve made a guess at 6000miles at 3 miles per kwh for an Ioniq 5 84kw rwd at 2000kwh. That gives 6000kwh total, splitting that 50/50 at rates above and adding standing charge I got £107 per month. Am I anywhere near? If I am that’s only about £7 more than current tariff which would be amazing if I could run car for £7 a month plus cost of charging 2000 miles at public chargers.
Just checked my ohme app and for the year 8000 miles am on octopus intelligent 7p / kw/hr whatever it is. 2444kw/hr and cost £177. 90% is home charging, the rest is Tesla chargers at 49p/kw hr
Thank you
January 29, 2026 at 3:57 pm #337086Currently, with Eon. My Ev tariff is ending soon, has been great. I set the schedule 00.00 to 7 am in the car and the max % soc required usual 90%, and have only charged within those hours for almost a year now. It works flawlessly for me.
The newest tariff is now only 6 hours, not 7, which isn’t the issue. I can handle that, but not a drop to 5 hrs that could be. The EV price has risen, and the peak price/standing charge is now one of the highest around.

So I have been looking into switching.
Seems IOG on the variable rate might be a short-term solution. As I feel, sometimes fixing is better done in the summer. The fixed price is currently 30.07p / kWh. We are at home during the day. So that price really matters a lot. My wife works from home, and we are now Home schooling our daughter.

I have a few questions. Hopefully, some already on IOG can answer them.
My ex30 is not compatible, but the Ohme Home Pro is. For the last year, I have charged with dynamic charging turned off and everything controlled by the car. Can I do the same on IOG and only charge from 11.30 pm to 5.30 am?
Also, I have never paired my ex30 to the Ohme. Hopefully, I never have to.
I know they’re getting tougher on the 6 hours, and more info will be released soon.
Charging overnight works for me, as the car restricts access somewhat if parked where I do charge it during the day.
I do not need to gain the system and charge outside of the 6 hours at night. Will that be possible, and if it is, how?
Will I be able to have dynamic charging disabled? As I do now. Control it via the car. If I only ever charge during the 6 defined hours at night.
The other thing is, what can I do with the gas? I don’t want to split them, that is too much headache, and as you’ll join on the Flexible Octopus tariff. Then, once the meter data is received. You can then move on to IOG. Can you move the gas onto a different, cheaper octopus tariff?
Eon installed new smart meters last year, before I got my Ev, but I had the charger already installed and both have sent data for over a year. So I don’t see them being an issue. How long will it likely be before I get onto IOG after being switched over, and how long does that take? Should I wait until the 3rd to start the switch, or do it ASAP?
Thx In advance for the help.
EX30 SMER Ultra
January 29, 2026 at 4:13 pm #337087Recently looked at EON and thought you got 6 hours?
Currently with Octopus non intelligent go and my main gripe is the day rate is not fixed, compared to Eon who from memory offer a fixed day rate.
January 29, 2026 at 5:16 pm #337123Recently looked at EON and thought you got 6 hours? Currently with Octopus non intelligent go and my main gripe is the day rate is not fixed, compared to Eon who from memory offer a fixed day rate.
You do now get 6 hrs on Eon next drive. The 5 hrs is many all other EV tariffs like Go. They are only 5 hours.
Currently till the 4th of Feb, I have 7 hours. I can add about 10% an hour. Sometimes 50% won’t cut it. Especially after I go visit family on Sunday, I returned home with 5% charged up to 73% overnight, and it was a cold one. 63% I could live with, just in case I have Something on the next day.
With the 5 hr Go tariff you can fix for 12 months or be on a variable same as IOG. Although the standing charges and peak rates differ slightly. whereas on IOG only the peak rate differs, and the 8.5p on go for 5 hours is not ideal for me, 7p is better.
Go Fixed

Go Variable

Eon’s ev tariff also doesn’t have any exit fees, not sure about Octopus. Eon do have a newer smart tariff, but my car isn’t compatible.
EX30 SMER Ultra
January 29, 2026 at 8:21 pm #337128Recently looked at EON and thought you got 6 hours? Currently with Octopus non intelligent go and my main gripe is the day rate is not fixed, compared to Eon who from memory offer a fixed day rate.
Yes, as old customers we still have 7 hours.
Sent from a mobile device.
Apologies for briefness and spelling mistakes.Motability Skoda Enyaq SportLine 85x April 2024 (unhappy customer - Ombudsman pending)
Motability Mazda CX-60 PHEV July 2023 (unhappy customer - early termination on mechanical grounds)
Motability VW Touran Family Pack May 2019 (happy customer)January 30, 2026 at 1:26 pm #337216@kezo Do you have an Octopus referral code, seeing as you’re so active & helpful on this forum? I’d like to reward you…
EX30 SMER Ultra
January 30, 2026 at 3:35 pm #337221@kezo Do you have an Octopus referral code, seeing as you’re so active & helpful on this forum? I’d like to reward you…
Here you go mate thanks
https://share.octopus.energy/sweet-moose-214
January 31, 2026 at 10:42 am #337238@kezo Do you have an Octopus referral code, seeing as you’re so active & helpful on this forum? I’d like to reward you…
Here you go mate thanks https://share.octopus.energy/sweet-moose-214
Thx, just switched, hopefully it all goes smoothly. Charging the car to 90% tonight, and I’ll charge it every night until I’m actually with the octopus. Then hopefully it’s not too long till I can move onto IOG.
EX30 SMER Ultra
January 31, 2026 at 11:11 am #337249Thx, just switched, hopefully it all goes smoothly. Charging the car to 90% tonight, and I’ll charge it every night until I’m actually with the octopus. Then hopefully it’s not too long till I can move onto IOG.
Octopus are pretty good when it comes to switching. Once your with them and everything working, its straight forward to move over to IOG. I moved to standard Go with a Smets 1 meter, as unlike other companies, Octopus said they could get reading from DCC. I don’t have a suitable charger for IOG but, only have a PHEV anyway. Thx
February 1, 2026 at 10:50 am #337276Octopus are pretty good when it comes to switching. Once your with them and everything working, its straight forward to move over to IOG. I moved to standard Go with a Smets 1 meter, as unlike other companies, Octopus said they could get reading from DCC. I don’t have a suitable charger for IOG but, only have a PHEV anyway. Thx
They’ve now got my meter numbers, and on my account page, it now says that they’ll be my official energy supplier from Wednesday 4th of February. The gas only has 3 ticks. So all seems to be going well.
I have never read the new meters since installed, over a year ago. Guess I might have to. The 4th is brilliant as that’s when my EON V5 ends and the rip off V12 Starts. Only the Ohme is compatible with IOG. I’ll give it a try 1st. Maybe I’ll just charge more often than I do. Plus, it will likely be different to the way I have been charging. With dynamic charging off. I’ve joined a Facebook group for ohme/octopus. So that should help.
Had an email form Eon.
We see you’re leaving. Is there any reason why? I did reply.
Every single cost element of the newer EV tariff is high and has changed, 6 hours, not the 7 hours I have been getting, and now 7.5p, not 6.7p. The peak rate is the highest on the market at 32.59p with a SC of 60p.
Before I’d recommend eon but now that’s impossible to do.
They offer a new smart tariff, but it only connects to the car, not to a charger, IMO that’s a big mistake. If the car’s not compatible. Which mine isn’t. Which makes Octopus better now for me as the ohme is compatible. I’ve never paired my car to the Ohme either.
Last weekend, I used the Electroverse app & card to do just over a 400-mile round trip. It cost just under £45, So I look forward to the 8% discount also, IOG will add.
You do get A zoom EV sub from Eon for a year. Which I got 25 Kwh free from Osprey, and recently a year’s subscription to BP Pulse, but I have not used that once, yet.
When I’ve needed a boost, those nearest have only been 50kw units. So used an Instavolt after 8 pm via their app, which was actually cheaper. That was in the summer when we were away in north Lincolnshire for a week, then went straight down to the rural Essex coast for the weekend. As my daughter wanted to see Hamilton for her birthday. Used mainly Telsa OTA with a monthly subscription for that long trip. Was almost 1000 miles.
I’ve bypassed the PHEV, just went straight BEV from a mild hybrid. The occasional longer trip isn’t so bad at all.
Appreciate the chat/help as always.
EX30 SMER Ultra
February 3, 2026 at 8:41 am #337346Doing plenty of research in readiness for an EV.
Currently with Eon on a “regular” fixed rate but with 1st choice car (Enyaq) + Ohme charger I’m eligible for their drive smart tariff at 6.5p off peak & 32p peak. Rough, educated calculations I’m looking at around £115/month bill.
They also have a non smart tariff where off peak is 7.5p and using same figures for estimate the monthly electricity would be around £125.
But, I’m coming across loads of problems people have with smart tariffs, ranging from won’t charge, not getting off peak rates, having to go in 1 app to stop charge so smart tariff can do it’s thing.
Currently pay £100/month so looking at cost of running an EV between £15 & £25 (both way cheaper than what I currently spent on petrol so I’m wondering if the extra £10 less is worth the hassle.
The impression I get is issues arise due to multiple charging apps for car, charger & electric supplier.
Issues don’t seem to be just Eon as seen similar problems with Octopus IOG.
How are people here finding things?
February 3, 2026 at 10:35 am #337351I’m on octopus intelligent go 7p 11:30-05:30. 29p rest of time. Ohme home pro. Audi Q4. The smart charger previously had my EDF smart tariff on its data base. Not so with Octopus. I set the charger manually to only charge 11:30-05:30. It works for me.
blah, blah, blah
February 3, 2026 at 10:46 am #337352They’ve now got my meter numbers, and on my account page, it now says that they’ll be my official energy supplier from Wednesday 4th of February. The gas only has 3 ticks. So all seems to be going well. I have never read the new meters since installed, over a year ago. Guess I might have to. The 4th is brilliant as that’s when my EON V5 ends and the rip off V12 Starts. Only the Ohme is compatible with IOG. I’ll give it a try 1st. Maybe I’ll just charge more often than I do. Plus, it will likely be different to the way I have been charging. With dynamic charging off. I’ve joined a Facebook group for ohme/octopus. So that should help.
From memory my electric went over the day before the gas did, but all went smoothly.
In your in home display (IHD), you can read the meter units, I would take a quick photo of both elec and gas readings before you go to bed tonight. This will safeguard you incase EON play funny buggers, as EDF did to me when moving to Octopus.
On Octopus there are time you get a block of 1 or 2hrs free electricity and you get paid for what you use above what you normally use during that period, so I put the car on charge and wear the kettle out etc😂 You have to opt in on the app, but its straight forward enough.
At other times, there an option to opt into saving sesions (save energy) and you get what they call Octoplus points for every kWh you save. They have an Octoplus shop, where you can exchange the points collected over time for Octopus branded clothing or Octopus plush toys (ideal if you have young kids in the family) Once a month around bill date, you can spin a wheel and get extra points. Mrs kezo loves it😂
February 3, 2026 at 10:59 am #337353The impression I get is issues arise due to multiple charging apps for car, charger & electric supplier.
If you are on an intelligent tariff from Octopus or OVO, you connect a compatible charger (or EV) to say the Octopus app.
(OVO no longer support Ohme and are in trouble)
February 3, 2026 at 4:16 pm #337371Doing plenty of research in readiness for an EV. Currently with Eon on a “regular” fixed rate but with 1st choice car (Enyaq) + Ohme charger I’m eligible for their drive smart tariff at 6.5p off peak & 32p peak. Rough, educated calculations I’m looking at around £115/month bill. They also have a non smart tariff where off peak is 7.5p and using same figures for estimate the monthly electricity would be around £125. But, I’m coming across loads of problems people have with smart tariffs, ranging from won’t charge, not getting off peak rates, having to go in 1 app to stop charge so smart tariff can do it’s thing. Currently pay £100/month so looking at cost of running an EV between £15 & £25 (both way cheaper than what I currently spent on petrol so I’m wondering if the extra £10 less is worth the hassle. The impression I get is issues arise due to multiple charging apps for car, charger & electric supplier. Issues don’t seem to be just Eon as seen similar problems with Octopus IOG. How are people here finding things?
EON smart drive has its pros and cons. Pros are that car will sometimes charge outside of normal nighttime hours so you often get more “cheap time”/ support staff are knowledgeable. Cons, for me, the app isn’t great and car charging constantly switches on and off which creates notifications within the vehicle manufacturer’s app
February 4, 2026 at 11:31 am #337393From memory my electric went over the day before the gas did, but all went smoothly. In your in home display (IHD), you can read the meter units, I would take a quick photo of both elec and gas readings before you go to bed tonight. This will safeguard you incase EON play funny buggers, as EDF did to me when moving to Octopus. On Octopus there are time you get a block of 1 or 2hrs free electricity and you get paid for what you use above what you normally use during that period, so I put the car on charge and wear the kettle out etc You have to opt in on the app, but its straight forward enough. At other times, there an option to opt into saving sesions (save energy) and you get what they call Octoplus points for every kWh you save. They have an Octoplus shop, where you can exchange the points collected over time for Octopus branded clothing or Octopus plush toys (ideal if you have young kids in the family) Once a month around bill date, you can spin a wheel and get extra points. Mrs kezo loves it
Thx Kezo, all switched over last night. My IHD is even now showing I’m with octopus, and the rates for both are now the new ones.
I just have to wait now for them to get the 30 min readings from the electric meter. to move on to IOG or just go Did call them. Wow, someone answered straight away. EON cannot play anything, as they know what the readings are from the 30 min readings. I did provide the gas reading last night. The good thing is, as my new tariff with EON was supposed to start today, but the switch happened, so that’s better for me.
When I was on the phone earlier, as I could not give them the electric meter readings online. ( Maybe because it was on a TOU) I emailed them the pics. We moved the gas onto the fixed tariff. Plus, there are no fees to exit. So if the gas drops in April. I can move on to that.
Our gas meter is outside, but the electricity is inside, under the stairs. Had no issues with the signal. But I did open the door this morning to maybe let more signal out. My ohme was offline last night, but when I woke, I looked, and it was back online. Didn’t turn the breaker off or anything. So I don’t know if that was because of the meter update or the 4G signal in the area, or even ohmes servers.
I will sign up to Octoplus, be silly not to. I did the spins on both supplies, he he. As usual. I win zip. Gas was available just after midnight, and electricity this morning.
I charged the car up to 100% on the morning of the 3rd, and currently it’s on 92%. 3 days & I’ve had the car a year, battery health is on 99.5%. Luckily, currently, I’m not affected by the battery recall. So think I’ll be ok for at least a week. Got only one trip to Nottingham planned this week. Next week, however, 2 trips to Sheffield. I’ll add them to the car’s maps later today, and it will tell me how much I’ll likely use. Should be Ok though.
EX30 SMER Ultra
February 4, 2026 at 11:50 am #337397Doing plenty of research in readiness for an EV. Currently with Eon on a “regular” fixed rate but with 1st choice car (Enyaq) + Ohme charger I’m eligible for their drive smart tariff at 6.5p off peak & 32p peak. Rough, educated calculations I’m looking at around £115/month bill. They also have a non smart tariff where off peak is 7.5p and using same figures for estimate the monthly electricity would be around £125. But, I’m coming across loads of problems people have with smart tariffs, ranging from won’t charge, not getting off peak rates, having to go in 1 app to stop charge so smart tariff can do it’s thing. Currently pay £100/month so looking at cost of running an EV between £15 & £25 (both way cheaper than what I currently spent on petrol so I’m wondering if the extra £10 less is worth the hassle. The impression I get is issues arise due to multiple charging apps for car, charger & electric supplier. Issues don’t seem to be just Eon as seen similar problems with Octopus IOG. How are people here finding things?
I’ve just moved from Eon to Octopus. My car is not compatible with the smart tariff. The charger is with octopus. I was paying 6.7p and 23.95p on V5, but on V12 it was increasing to 7.p and over 32p. Now, today they’ve brought out V13 at 30p. Too late.. But the standing charge is 60p. Plus, it’s now only 6 hours and was 7 hours.
It was good over the last year. My bills didn’t really rise from charging an EV. I did like the simple non-smart tariff. But I’ll give the smart one a go, because it’s cheaper and the day rate also matters to us.
I always put the dishwasher on the odd clothes wash on at night and use electric oil heaters if it’s really cold at night. That’s hard to calculate, but it will reduce your bills more than you think. As all energy used during off-peak is at a lower rate during fixed hours. On a smart tariff, if they give you slots outside the off peak you also get the house usage at the lower rate. Although changes are happening as some have been gaining the system. charging at half the volts to get more slots. They’re stopping that soon and so will EON. the difference with eon smart tariff is that you can only use their app and connect to the car.
EX30 SMER Ultra
February 4, 2026 at 12:04 pm #337398I’m on octopus intelligent go 7p 11:30-05:30. 29p rest of time. Ohme home pro. Audi Q4. The smart charger previously had my EDF smart tariff on its data base. Not so with Octopus. I set the charger manually to only charge 11:30-05:30. It works for me.
If you don’t mind, how do you do that?
As I’m soon joining IOG, and as far as I know, one needs to onboard within 7 days. My car is not compatible, but the Ohme Home Pro is. So as far as I can understand you in the Octopus app set up the Ohme as a device. It did say that if you don’t onboard within 7 days, you’ll be moved to the 8.5 go fixed tariff. I’m used to just setting my hours/ max % soc in the car. So, just charging within the cheap hours and would prefer to do the same. If possible.
EX30 SMER Ultra
February 6, 2026 at 3:16 pm #337504This morning, Octopus had my meter reading data for the 4th, the day I switched.
So called them up & they moved me straight onto IOG. Set up the Ohme Pro as a device, it’s now showing IOG as the tariff, and the dynamic charging & price cap are disabled.
I did notice in the Octopus app, when you click on the ohme under devices, there is an option to disable smart charging. I might just have to try that out.
Will do a smart charge tonight, back up to 90% as it’s a greener night tonight. Currently down to 56%.
The Switch couldn’t have been any smoother.
EX30 SMER Ultra
February 6, 2026 at 3:29 pm #337505That was quick, I think it took Octopus 7-10 days to get meter reading.
Hope all goes well tonightfor you, I will have to look out the window tonight and see how greener the night is. Green moon perhaps! 😂
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