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Discussion Starter · #1 ·
Hi All,
Could someone kindly help me to chose the EV tariff?
I have two tariffs one from British gas and another one from EDF.

British gas:
Off peak times are from 12MN to 5AM
Off peak rates- 12p,
Peak rate- 39.365p
Standing charge-45.86p

EDF:
Off peak times are from 1AM to 8AM.
Off peak rates- 6.90p
Peak rate- 47.31p
Standing charge-45.86p

Thanks in advance for any advice.
 

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Ordered Niro EV '4' MY23 with heat-pump
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Without knowing your electricity usage (household) and mileage for EV, so we understand how much you'll be charging, I'm not sure what help others can provide.

Given the standing charge is the same, that can be ignored.
As the day rate is around an 8p difference, if your household usage is high that will factor into your overall monthly costs. i.e. will it offset the difference between off-peak rates?

But to determine which is 'better' for you, more information would be needed.

I'd ask why you're not looking at Octopus for either their Go or Intelligent tariffs which are specifically designed for EVs and other low-carbon technology.
 

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I don't get it...12p Vs 6.9p

What's there to choose?

If you have no other considerations but the EV charging... There is no contest.
 

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Niro EV '4' 2022+
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You will need
I don't get it...12p Vs 6.9p

What's there to choose?

If you have no other considerations but the EV charging... There is no contest.
The problem is that most people do have other considerations as they will have day time use every day, but may only be charging the car once a week...

The question can only be answered when you know the full details of EV charging frequency and amount along with use during the peak period...

Factors like solar and a home battery also make a difference.

For example, we have a Tesla Powerwall 2 and so we use 100% of our electricity at the low rate, the peak rate is irrelevant for us so the low rate is the only consideration, but that isn't the same for everyone.
 

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Discussion Starter · #5 ·
I don't get it...12p Vs 6.9p

What's there to choose?

If you have no other considerations but the EV charging... There is no contest.
With EDF the off peak rates are for 7 hours whereas with British gas 5 hours. However, the peak rates with EDF is 47.31 vs 39.365 with British gas. Hence, seeking the advise.
 

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Discussion Starter · #6 ·
You will need

The problem is that most people do have other considerations as they will have day time use every day, but may only be charging the car once a week...

The question can only be answered when you know the full details of EV charging frequency and amount along with use during the peak period...

Factors like solar and a home battery also make a difference.

For example, we have a Tesla Powerwall 2 and so we use 100% of our electricity at the low rate, the peak rate is irrelevant for us so the low rate is the only consideration, but that isn't the same for everyone.
Thanks Mark for giving some clarity. I don't have solar or home battery.
With regards to the EV charging frequency, I'm yet to receive my first EV car(Niro EV4) within the next week. My weekly mileage is around 220miles.
 

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Thanks Mark for giving some clarity. I don't have solar or home battery.
With regards to the EV charging frequency, I'm yet to receive my first EV car(Niro EV4) within the next week. My weekly mileage is around 220miles.
So that will probably be twice a week, and around 60kW in total allowing for losses.

The remaining piece of the puzzle is how much will you typically use (kWh) for the rest of the house in the peak periods for each of those tariffs?
 

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Roughly how many miles per week do you drive in your EV(s)? Do you know how many kWh you typically use per week/month for that? (If not you could estimate using the long-run kWh/mi you are getting.)

(ah just seen you don’t have the car yet. 220 miles per week, at say 3.75mi/kWh (kona might get 4 or more but it depends how you drive, how long journeys are, temp, etc.) is 60kWh/week for EV charging.)

How much electricity does the rest of the house use per week? If you have a smart meter you might be able to find out from your current provider’s customer online system. If you don’t then you could look at recent bills (and then subtract out any kWh you think went on home EV/PHEV charging - presumably none in your case?) to get a rough idea.

Now run those numbers through the two different tariffs to see which costs more, assuming you can do all your EV charging overnight during the cheap rate. Which comes out to the highest total?

Note that if you get a 7kW chargepoint then even 5 hrs is long enough to add 35kWh which is 130 miles of range. If you use a ”granny” charger cable then you’ll only be adding ~10kWh in 5 hrs, which is more like 40 miles of range, whicy might mean having to do 10% or so of the EV charging at the higher rate if you go with BG, depending on how evenly split the miles are between days.

Then you can think about whether you can time shift other electrical loads (dishwasher, washing machine, electric underfloor heating, immersion heater - heating water with cheap overnight electric is cheaper than gas at current prices) to the overnight period - and whether you could do more time shifting with the longer cheap rate period?
 

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Hi All,
Could someone kindly help me to chose the EV tariff?
I have two tariffs one from British gas and another one from EDF.

British gas:
Off peak times are from 12MN to 5AM
Off peak rates- 12p,
Peak rate- 39.365p
Standing charge-45.86p

EDF:
Off peak times are from 1AM to 8AM.
Off peak rates- 6.90p
Peak rate- 47.31p
Standing charge-45.86p

Thanks in advance for any advice.
If possible you need to estimate your current electric usage using your meter, info you get from your supplier or just past bills. If you guesstimate how much of that is in the period that will be peak rate under the new tariffs, you can then estimate the total cost under each of the new tariffs of both your existing electricity usage and the new consumption for the car.

Off topic but very pleased to see there are competitors to Octopus again in the off-peak EV charging market. These tariffs look competitive with Go now.
 

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Discussion Starter · #10 ·
So that will probably be twice a week, and around 60kW in total allowing for losses.

The remaining piece of the puzzle is how much will you typically use (kWh) for the rest of the house in the peak periods for each of those tariffs?
With EDF for remaining 17 hours of peak rate/day I would say around 40-45kW per week as I could use the electricity for using washing machine, shower,etc between 6am and 8am.
However, with British gas it may go up as its only 5 hours of off peak and it is only till 5am.
 

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With EDF for remaining 17 hours of peak rate/day I would say around 40-45kW per week as I could use the electricity for using washing machine, shower,etc between 6am and 8am.
However, with British gas it may go up as its only 5 hours of off peak and it is only till 5am.
That would suggest that EDF is the better choice for you as long as you do make the effort to use that 6-8am period as you have mentioned...
 

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Discussion Starter · #12 ·
Roughly how many miles per week do you drive in your EV(s)? Do you know how many kWh you typically use per week/month for that? (If not you could estimate using the long-run kWh/mi you are getting.)

(ah just seen you don’t have the car yet. 220 miles per week, at say 3.75mi/kWh (kona might get 4 or more but it depends how you drive, how long journeys are, temp, etc.) is 60kWh/week for EV charging.)

How much electricity does the rest of the house use per week? If you have a smart meter you might be able to find out from your current provider’s customer online system. If you don’t then you could look at recent bills (and then subtract out any kWh you think went on home EV/PHEV charging - presumably none in your case?) to get a rough idea.

Now run those numbers through the two different tariffs to see which costs more, assuming you can do all your EV charging overnight during the cheap rate. Which comes out to the highest total?

Note that if you get a 7kW chargepoint then even 5 hrs is long enough to add 35kWh which is 130 miles of range. If you use a ”granny” charger cable then you’ll only be adding ~10kWh in 5 hrs, which is more like 40 miles of range, whicy might mean having to do 10% or so of the EV charging at the higher rate if you go with BG, depending on how evenly split the miles are between days.

Then you can think about whether you can time shift other electrical loads (dishwasher, washing machine, electric underfloor heating, immersion heater - heating water with cheap overnight electric is cheaper than gas at current prices) to the overnight period - and whether you could do more time shifting with the longer cheap rate period?
Thanks for the detailed explanation. Much appreciated. I will check my bill and do the maths. Thanks
 

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Discussion Starter · #13 ·
If possible you need to estimate your current electric usage using your meter, info you get from your supplier or just past bills. If you guesstimate how much of that is in the period that will be peak rate under the new tariffs, you can then estimate the total cost under each of the new tariffs of both your existing electricity usage and the new consumption for the car.

Off topic but very pleased to see there are competitors to Octopus again in the off-peak EV charging market. These tariffs look competitive with Go now.
Thanks, will check the past bill as suggested.
 

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I haven't read all the replies to this thread, so apologies if I am repeating something already stated: We use Octopus Go, and one of the advantages is it's not explicitly limited to overnight EV charging. We tend to also run dishwasher / washing machine between 12.30 - 04.30 as well.

It's not clear to me if the tariffs shown above are explicitly tied to EV charging, or not, but worth double checking that as well.
 

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Discussion Starter · #15 ·
I haven't read all the replies to this thread, so apologies if I am repeating something already stated: We use Octopus Go, and one of the advantages is it's not explicitly limited to overnight EV charging. We tend to also run dishwasher / washing machine between 12.30 - 04.30 as well.

It's not clear to me if the tariffs shown above are explicitly tied to EV charging, or not, but worth double checking that as well.
No its not tied to EV charging. I could use for other purpose as well.
 

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This can't be right, can it?
If that's what they are offering now, I'll drop Octopus like a hot potato for the 21.41p/9p rate (34.43p/8.25p Go Faster)
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Looking at it, it doesn't seem to be that rate - now I remember why I don't delve into the bottomless pit of energy tariffs.

Seems they aren't taking any switch requests to EV tariffs

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Looking at it, it doesn't seem to be that rate - now I remember why I don't delve into the bottomless pit of energy tariffs.
I didn't think that EDF were taking new customers onto their EV tariffs at the moment?

Also on there standard variable tariff they have some great E7 rates, but the best prices require you to be on a PAYG smart meter.

No problem with the smart meter obviously, but PAYG could be a little irritating.

Also have to check the hours for your region with E7 as they are not all the same, and not always the same when we shift to BST...
 

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I didn't think that EDF were taking new customers onto their EV tariffs at the moment?
After a bit of prodding, I came to that conclusion and edited the post again.

The SVT doesn't seem too bad to be honest, I think I'd actually save with that on the Eco2020 but would have to run the numbers - not my forte.

The 5 hours Go Faster don't seem to cover my daily charge (I get about 35kWh per night) but the car could occasionally do with another 10-20, which would be easily achieved with the 10 hours weeknight or all weekend charging!... but, do they take on new recruits for the "Eco2020" tariff?
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This can't be right, can it?
It can’t 😂 just to clarify, my understanding is that that PDF contained the details of plenty of legacy GoElectric tariffs and how they’re affected by the EPG - but the only ones available for new customers are the standard variable rate ones (including E5/Eco2020)
 
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