EV Tariff Calculator: find your cheapest UK electricity tariff

Tell us how much you drive, what charger you have at home, and how much electricity the rest of your house uses. We'll model seven UK electricity tariffs — including the standard variable price cap — and tell you which one is genuinely cheapest for your usage. The ranking is based on monthly cost only, never affiliate rate.

Your car

295Wh/mile real-world · 75kWh usable battery

Monthly miles 800

UK average is around 700–1,000 miles/month.

Home charger

How much can you time-shift charging to off-peak?

Most of it (≈90%) Smart charger + reliable overnight access Some of it (≈60%) Manual scheduling, occasional missed nights A little (≈25%) Mostly plug-in-when-home; some overnight None of it (0%) Can't shift; or you only public-charge

Non-EV monthly electricity usage 280 kWh

Everything except your EV: lights, heating, cooking, appliances. Your last few electricity bills will show this figure.

Cheapest for your usage

Intelligent Octopus Go

Approximate monthly electricity cost: £97.22

That's £62.36 less per month than the standard price cap.

Off-peak achievability check

Your 7kW charger over 6h of off-peak/night can deliver up to 1278kWh/month. You need 212kWh/month at your selected off-peak share — comfortable headroom.

All 7 tariffs ranked

Rank	Tariff	Total /mo	vs cap	EV cost	Non-EV	Standing	View
1	Intelligent Octopus Go 26.5p peak · 6.9p off-peak	£97.22	−£62.36	£20.91	£60.48	£15.83	Provider ↗
2	E.ON Next Drive 27.5p peak · 6.7p off-peak	£99.60	−£59.98	£20.72	£62.44	£16.44	Provider ↗
3	Octopus Go 26.5p peak · 8.5p off-peak	£101.74	−£57.84	£24.31	£61.60	£15.83	Provider ↗
4	EDF GoElectric Overnight 28p peak · 9p off-peak	£106.96	−£52.62	£25.72	£65.10	£16.13	Provider ↗
5	British Gas Electric Driver 27.5p peak · 9.5p off-peak	£107.20	−£52.38	£26.67	£64.40	£16.13	Provider ↗
6	OVO Charge Anytime 27p peak · 7p off-peak EV-only off-peak: non-EV usage stays at peak	£113.89	−£45.70	£21.24	£75.60	£17.05	Provider ↗
7	Standard Variable Price Cap 27.8p peak · 27.8p off-peak	£159.58	—	£65.61	£77.84	£16.13	Provider ↗

How sensitive is this to your mileage?

Intelligent Octopus Go is your cheapest tariff at every plausible mileage we tested (0 – 3000 mi/month). The recommendation is robust to your driving patterns.

How we calculate this

EV kWh from your car's real-world efficiency × monthly miles. Non-EV usage split 75% peak / 25% off-peak (households use some appliances overnight). OVO Charge Anytime is modelled with its EV-only off-peak quirk. Full assumptions on the methodology page.

Tariff data freshness

Rates verified against each provider's published rate card; check the source on the provider's site before switching. Rates change frequently. We never rank tariffs by affiliate rate — only by total monthly cost.