Octopus Intelligent Go. Pay only 7p/kWh for 6 hours overnight, plus smart top-ups for the car.
E.ON Next Drive is 7.5p/kWh for a 6-hour period (but comes with a few perks like parking discounts).
The smart charger that unlocks up to £600 a year in savings
Hypervolt works with all leading EV tariffs (like Octopus, OVO & EDF), saving drivers hundreds every year
Hypervolt works with the UK’s biggest smart tariffs
(plus our own Ultra Mode if you’re not on one)
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Save more: pay 7p (or less) for charging
Smart EV tariffs give you ultra-low overnight electricity rates or smart charging credits, to slash bills.
With Hypervolt, it’s simple: plug in, set your schedule, or let your tariff handle it automatically.
What's best for you?
Tariffs are like crisps: they come in many flavours and everyone has their preference.
We’ve laid everything out in our tariff comparison table, but here are some quick recommendations:
If you
want the simplest deal with whole-home cheap hours
charge at random times and don’t want to think
want the lowest night rate
Then we recommend
OVO Charge Anytime. Works out to 14p/kWh (or ~4p/mile), with both Pay As You Go or monthly plans that have added perks.
So Energy (6.5p/kWh) and Good Energy (6.6p/kWh) both offer a 5-hour off peak window
Hypervolt connection
Direct integration with Hypervolt
Works with Hypervolt scheduling
Direct integration with Hypervolt
Works with Hypervolt scheduling
Ready to save on every mile?
Get my HypervoltYou deserve the
UK’s smartest charger.
Direct integrations with Octopus Intelligent Go and OVO Charge Anytime
Works seamlessly with EDF, E.ON, British Gas, ScottishPower, So Energy, Good Energy
Designed in Britain and virtually indestructible
Ready to save on every mile?
Get my HypervoltTariff comparison
These are the rates published by suppliers as of Sept 2025. Rates vary by region and change often. Always check your own postcode before you sign up.
Take your pick. Hypervolt works with every supplier.
Tariff
Off-peak rate
Off-peak hours
How it works
Hypervolt connection
Intelligent Go
7p/kWh
11:30pm–5:30am (6h) + smart top-ups
Automatically schedules your charging for the cheapest, greenest slots. 6h cheap rate for the whole home nightly.
Direct integration with Hypervolt Home 3 Pro
Anytime (add-on)
14p/kWh effective for EV charging
Any time you “smart charge”
You pay your normal home rate; OVO credits your bill so EV kWh net out at 7p. £100/month credit cap.
Direct integration with Hypervolt Home 3 Pro
GoElectric (Overnight)
9p/kWh
12am–5am
Two-rate EV tariff, 5 off-peak hours for home and car. Works with any EV/charger.
Works with Hypervolt scheduling (we also balance the grid with EDF).
Next Drive
7.5p/kWh
12am–6am
One-year fixed EV tariff, six cheap hours nightly. Smart meter mandatory.
Works with Hypervolt scheduling
Electric Driver
7.9p/kWh
12am–5am
Two-rate EV tariff; any EV/charger. Extras if you’re on Hive hardware, but not required.
Works with Hypervolt scheduling
EV Saver
7.2p/kWh
12am–5am (shifts 1–6am in BST for many meters)
Simple two-rate EV tariff. EV Optimise add-on offers smart charging at 10p/kWh anytime.
Works with Hypervolt scheduling
So EV
6.5p/kWh
12am–5am
Lowest nightly rate from a 100% renewable supplier. Works with any EV.
Works with Hypervolt scheduling
EV Charge
6.6p/kWh
12am–5am
Second-lowest nightly rate from another 100% renewable supplier.
Works with Hypervolt scheduling
Fixed EV
8p/kWh
12am–5am (GMT)
One-year fixed EV tariff; 5 cheap hours overnight.
Works with Hypervolt scheduling
Smart EV
5p/kWh (promo)
Set off-peak window
A new supplier making a splash with a promotional offer.
They’ve partnered with Easee, but it will work just fine with Hypervolt too.
Top-Rated
by Drivers Nationwide
Our claims explained
The smart charger that unlocks up to £600 in savings.
Savings assume home EV charging of 3,100 kWh/year on a smart EV tariff at 7p/kWh compared with the Ofgem price-cap average SVT electricity unit rate of 26.35p/kWh (Q4 2025). Actual savings depend on vehicle efficiency, miles driven, the share of charging done at home, regional unit rates and adherence to off-peak/smart-scheduled charging. Sources: Ofgem cap rates; Intelligent Octopus Go and OVO Charge Anytime tariff pages.
The UK’s smartest charger.
Hypervolt is the only charger that’s integrated with the UK’s leading smart tariffs and has its own “Ultra Mode” that lets drivers charge for less even if they don’t have a smart tariff.
Works with all leading smart tariffs.
Hypervolt has direct integration with Octopus Energy, OVO Energy, and a strategic partnership with EDF Energy.
Octopus is now the UK’s largest residential energy supplier (FT) and has 260,000 customers on its Intelligent Octopus Go tariff, claiming it is the UK’s “favourite EV tariff” based on YouGov research.
WHATCAR? and Rightcharge both ranked OVO Charge Anytime, Intelligent Octopus Go, and E.On Next Drive in their top rankings.
While OVO and EDF do not publish adoption numbers for specific tariffs, based on their market position with the UK’s “Big Six” energy providers, the majority of EV drivers in the UK would be on tariffs with OVO, EDF, or Octopus.