What energy tariff should I be considering for a Phev?

WIAWSNB

Currently on Octopus Loyal 16M Fixed at 24.5p and 66p standing Lec, and 6.62 and 29.3p standing Gas.

We have a Phev. It's only 14kWh, but it would be nice to have it regularly topped up at a cheap rate overnight from a standard socket at 2.4kW. No interest in adding the more powerful charger (3.7kW?) as that would require the point to be fitted to the house - I currently use the garage.

It looks like most of Octo's cheap overnight tariffs - Go, Intelligent Go, EV Saver - are electric only? Gas isn't mentioned (I'm trying to have this clarified).

I'm basically looking for as cheap an overnight rate as possible, at a set few-hour time slot each night (3-4 hours would do), whilst not increasing the day rate excessively in retaliation.

Any thoughts, please? Ta.

(We also have PV panels, but the car is rarely at home during the day to take proper advantage - it'll be fine at the height of Summer. No real interest in adding a battery.)

debitcardmayhem

I use tracker for gas, and Intelligent flux for elec. You can have a mixed tariffs for both, the gas fix you are on seems high to me , but I assume you don't have exit fees so at least swap your electricity and shift washing dishwasher etc to overnight. I don't have an EV so I would expect someone else will come along, but I think Go is OK (not intelligent go).

gpman

Electric vehicle energy tariffs - Money Saving Expert

EV tariffs are usually electric only.

For gas, you can either leave it with Octopus or save by switching to a supplier that will allow a gas only tariff option. There's only a couple I am aware of and most comparison sites don't seem to cater for a gas only option. Also maybe worth contacting a supplier directly and trying to twist their arm if you see a tempting gas offer that is not offered as gas only online.

born_again

Intelligent Go - will not work with a granny charger.

Look at how much extra you are using & see if Go would work out cost effective.

As a aside, please make sure the socket you are using to connect to granny charger is BS 1363-2 rated.

Rodders53

You need to work out how much energy you will use charging the PHEV every year and how much load you might move to E7 type rates. Once you have the annual kWh on peak and off peak use, only THEN you can calculate if there is a saving to be had.

Our full EV does 7,000 miles pa, and in my spreadsheet I estimate we charge 5,500 miles at home the other 1500 when away on holiday). Night use is virtually all EV charging.

I've also got the numbers adjustable for the miles per kWh the car does… and some tariff rates to allow comparisons.

On 4 miles/kWh one cheap fixed single rate my supplier offers is the same annual cost astheir non-smart EV tariff for my overall use. But my EV isn't that efficient over a full 12 months so the EV one is a little cheaper for me.

WIAWSNB

Thanks all - good stuff to go on.

I'll see what Octopus will do for the gas tariff, and then consider their 'Go' for leccy - seems ideal.

shinytop

https://forums.moneysavingexpert.com/discussion/6653775/what-energy-tariff-should-i-be-considering-for-a-phev

I have a PHEV and am with EON.

Not sure what the latest offers are. I too charge with a granny charger.

QrizB

I have a PHEV and am with EON.

Not sure what the latest offers are.

EON Next Drive V12 is a bit more expensive than the expiring V5 or V6 deals, and export pays less too.

See this thread for how that affects one particular household:

https://forums.moneysavingexpert.com/discussion/6650642/eon-renewal-60-increase-and-no-justification/p1

Edit to add: here are the current EON Next Drive Fixed V13 rates for the Southern region:

vic_sf49

I'm betting you're in a different region to me, but those rates for gas look quite high.

There's a new tariff out today, Feb 2026 V1, is that any better? Assuming your Loyal one does not have exit fees.

WIAWSNB

Thanks, Shinytop - good to have a real world example, and that leccy rate is great, coupled with a noticeably lower standing charge. And their gas is pretty comparable.

I'll check out their current rates.

I'm in the SW, Vic. No exit fees, I believe. The Feb 2026V1 you mention is Octo?

Heedtheadvice

I concur that you would be best to do calculation based on reasonable assumptions.

Getting on to an EV Tariff for a full BEV is virtually a no brainer if you an charge it overnight, do a reasonable number of miles and cannot benefit from using your daytime solar generation ( which you might export anyway). Added benefit of using overnight grid cheap import for high power consuming devices that can be programmed to use that night period. Such as washing/dishwasher machines tumble dryers.....and storage batteries. That can save hundreds of pounds a year if you do not have to use much of the more expensive day rate.

With a PHEV the amount of benefit will be potentially reduced because of capacity. So doing a calculation to see the trade off between overnight cost reduction and daytime cost increase is a good idea.

For Example if you need to top up overnight by 50% of the PHEV capacity ( say 7 kWh) that could save you 7x18p per night I.e. about £1.26 per day. Perhaps slightly more by using appliances overnight and a small baseload. Let's assume £1.50

I your average baseload( continuous background load of your property) amounts to 5kWh at a high daycare of 36p that costs you an extra (36-26p, rates assumed , new less existing daytime rates) 50p.

That would be a £1 a day prospective saving. ( £1.50-0.50).

If you had a full daytime charge and one day of high property use ( say 20kW hours total ) that would cost an extra £2 taking it to a fiver a week saving. So it could be beneficial marginal or costly depending upon if you are a your property consumption and how much you would charge you PHEV.

You would need to alter this simplified calc to suit you own circumstances as you might save or it could cost more!