Best EV Tariffs UK 2026: Cheapest Rates for Home Charging
Charging an EV at the standard ~26p/kWh rate costs roughly the same as petrol. Switch to the right EV tariff and drop to as little as 6.7–7p/kWh overnight — saving around £400–£770 a year. Here's exactly which 2026 tariff to choose.
Muhammad founded KilowattKit after spending hours trying to decode confusing electricity bills and realising there were no clear, jargon-free tools for ordinary homeowners. He researches energy rates, solar payback, EV charging, and heat pump economics across the US, UK, Canada, and Australia — sourcing every figure directly from official government and regulatory data.
⚡ Key takeaways
- ✓Dedicated EV tariffs offer 6.7–9p/kWh overnight — vs ~26p on the standard price-cap rate.
- ✓Annual saving vs standard tariff: typically £380–£540; Octopus reports ~£771 for Intelligent Octopus Go customers.
- ✓Cheapest headline rates in 2026: E.ON Next Drive (~6.7p), Intelligent Octopus Go & OVO Charge Anytime (~7p).
- ✓You need a smart meter — all EV tariffs use half-hourly readings.
Best EV Tariffs Compared (2026)
| Tariff | Supplier | Cheap rate | When | Smart charger needed? |
|---|---|---|---|---|
| Intelligent Octopus Go ⭐ | Octopus Energy | ~7p/kWh | 23:30–05:30 + smart slots | Compatible EV/charger (for extra slots) |
| E.ON Next Drive | E.ON Next | ~6.7p/kWh | Overnight window | No |
| OVO Charge Anytime | OVO Energy | ~7p/kWh | Any time (managed charging) | Yes (compatible EV/charger) |
| Octopus Go | Octopus Energy | ~8.5p/kWh | 23:30–05:30 (fixed) | No (manual schedule) |
| British Gas Electric Driver | British Gas | ~8.95p/kWh | 00:00–05:00 (5 hrs) | No |
| EDF GoElectric | EDF | ~9p/kWh | Overnight window | No |
Rates are indicative as of July 2026 and vary by region and EV/charger compatibility. Daytime rates on these tariffs are typically 28–32p/kWh, versus the ~26p standard price-cap average — always confirm current rates with the supplier before switching.
Annual Saving: EV Tariff vs Standard Rate
Assumes 7,000 miles/year, 3.5 mi/kWh efficiency = 2,000 kWh charging/year. EV tariff at 7p vs the ~26p July 2026 standard price-cap average.
For higher mileage drivers (12,000–15,000 miles), the saving grows to £650–£800 per year — and Octopus reports its Intelligent Octopus Go customers saved around £771 on average over the last year versus its standard variable tariff, once wider household load-shifting is included.
📈 Why this gap is widening: the Ofgem price cap has climbed through 2026 — the July cap put the average unit rate near 26p/kWh, and forecasts for the October 2026 cap point to a further small rise. Because dedicated EV tariffs are fixed near 7p overnight, every increase in the standard rate makes switching more valuable, not less.
Why Intelligent Octopus Go is the Best Option for Most
It's the UK's most popular EV tariff — the majority of the 650,000+ households on a smart time-of-use EV tariff are on it. Unlike standard EV tariffs with a single fixed cheap window, Intelligent Octopus Go integrates directly with compatible EVs and chargers (Tesla, Volkswagen Group, Ohme, Indra, Pod Point, and others). It automatically schedules your EV to charge during the cheapest grid periods — which can include extra cheap slots outside the 23:30–05:30 window when renewable generation is high. That flexibility is a big part of why Octopus reports a typical ~£771 annual saving for its customers.
✅ Pros
- Fully automatic — just plug in
- Can access rates well below 7p during cheap grid periods
- No manual scheduling needed
- Compatible with many EVs and chargers
⚠️ Requirements
- Compatible EV or smart charger required
- Smart meter required
- Must be an Octopus customer
- Only available in Great Britain
Combine Solar Charging for Maximum Savings
If you have solar panels, combining them with an EV tariff stacks savings even further. During the day, charge from your own solar (effectively free electricity). Overnight, top up on the cheap tariff rate. This combination — solar daytime charging + overnight cheap tariff — is the cheapest possible way to power an EV in the UK.
A household with 4kWp solar and Octopus Go, driving 10,000 miles/year, can realistically cover 30–40% of miles from free solar and 60–70% at 7p/kWh — cutting annual charging costs to £80–£130. Use our EV + Solar Savings Calculator to model your exact figures.
See your current charging costs vs what you'd pay on an EV tariff — and how solar panels reduce your cost to near zero.