✓ Updated May 2026 · Rates from supplier APIs

Find the best EV tariff
for your situation

Independent, numbers-first guides to smart overnight EV charging tariffs in the UK. Real rates, regional postcode lookups, and honest comparisons — no fluff.

6.99p
EDF off-peak rate /kWh
8p
Octopus IOG off-peak /kWh
7 hrs
EDF off-peak window
£50
Switching bonus available

All three tariffs at a glance

Not sure which Octopus tariff you're on? Here's how all three compare against EDF Go Electric.

Feature 🐙 Octopus Go 🐙 Intelligent Go ⚡ EDF Go Electric
Off-peak rate ~9.5p/kWh 8p/kWh 6.99p/kWh
Off-peak window 5 hrs (00:30–05:30) 6 hrs (23:30–05:30) 7 hrs (23:00–06:00)
Smart dispatch ❌ None ✅ Yes (6hr cap) ✅ Optional, no cap
Compatibility needed None Required to join None (Smart Charging optional)
Whole-home off-peak ✅ Yes ✅ Yes ✅ Yes
Exit fee None None £75
Pays you monthly £5/month (Smart Charging)

Who wrote this?

I'm Steve Kirtley, a developer and EV driver based in Wales. I switched from Octopus Intelligent Go to EDF Go Electric in May 2026 after Octopus raised prices and began enforcing the 6-hour dispatch cap.

The piece that was missing was a HomeAssistant integration for EDF — so I built one. HomeAssistant-EDFEnergy is a fork of BottleCapDave's excellent Octopus integration, adapted for EDF's API. It's MIT Licensed and open to contributions.

All rates on this site are taken directly from supplier APIs and baked in at time of writing. Always verify current rates before switching. Referral links on this site earn me a referral credit and give you a £50 switching bonus.