EV Electricity Tariffs UK 2026
The right electricity tariff can reduce your charging costs by 70–80% compared to a standard rate. Here's how EV tariffs work and which ones are worth considering.
How EV Tariffs Work
Time-of-use (TOU) tariffs charge different rates for electricity depending on when you use it. Overnight — when grid demand is low — rates drop dramatically. EV tariffs are designed specifically around this: cheap overnight power for charging, standard rates during the day.
Your smart charger can be scheduled (or controlled automatically) to charge only during the cheap overnight window. You wake up to a full battery at minimal cost.
Key EV Tariffs — 2026 Overview
| Tariff | Supplier | Off-Peak Rate (approx) | Off-Peak Hours | Smart Charger Required? |
|---|---|---|---|---|
| Intelligent Octopus | Octopus Energy | ~7–9p/kWh | 23:00–05:30 + smart dispatch | Compatible charger + vehicle API |
| Octopus Go | Octopus Energy | ~9p/kWh | 00:30–04:30 | Any smart charger |
| Octopus Agile | Octopus Energy | Variable — can be negative | Varies — check app | Any smart charger |
| E.ON Drive | E.ON | ~9p/kWh | 00:00–07:00 | Any smart charger |
| EDF GoElectric | EDF | ~8–10p/kWh | 00:00–07:00 | Any smart charger |
Rates approximate and subject to change. Always check with the supplier for current pricing.
Off-peak rates are only part of the picture. Check the day rate, standing charge, and any applicable exit fees. The best EV tariff overall depends on your usage pattern.
Cost Comparison: Tariffs vs Petrol
| Method | Cost per Mile (approx) | Annual Cost (10,000 miles) |
|---|---|---|
| Petrol (40mpg, 140p/litre) | ~16p | ~£1,600 |
| EV — standard rate (28p/kWh) | ~7p | ~£700 |
| EV — Octopus Go (9p/kWh) | ~2.3p | ~£230 |
| EV — Intelligent Octopus (7p/kWh) | ~1.8p | ~£180 |
Frequently Asked Questions
Do I need a specific charger to use Intelligent Octopus?
Yes — Intelligent Octopus works by communicating directly with your vehicle or charge point via API to automatically schedule charging. It requires either a compatible vehicle (Tesla, Volkswagen Group, various others) or a compatible smart charger. The list of compatible devices is on the Octopus Energy website.
Can I switch to an EV tariff without a smart meter?
Most EV tariffs require a smart meter to verify time-of-use consumption. If you don't have one, contact your supplier — smart meter installation is free.
Is Octopus Agile worth it for EV charging?
Agile's variable pricing can offer very low or even negative rates overnight, but requires more active management or automation. For most EV drivers, Intelligent Octopus or Octopus Go offer the best balance of simplicity and savings.