Octopus Switch GuideThe key difference
EDF's strength is fixed-rate tariffs. If you want to lock in a rate for 12-24 months and not think about it again, EDF typically has more competitive fixed deals than Octopus. Octopus's strength is everything that happens after you switch: the app, smart tariffs, renewable energy integration, and ongoing flexibility.
Tariff comparison
| Factor | Octopus Energy | EDF |
|---|---|---|
| Variable tariff | Competitive, typically at or below the cap | Competitive, similar to Octopus on variable |
| Fixed tariffs | Available but less prominent | Strong fixed-rate options, often below cap for 12-month fixes |
| Smart tariffs | Agile, Go, Flux, Cosy — market-leading range | GoElectric (EV) — limited smart tariff range |
| Referral credit | £50 via referral link | No equivalent referral programme |
| Exit fees | None on variable | May apply on fixed tariffs (£25-£50 per fuel typical) |
Customer experience
Octopus consistently wins customer service awards. EDF's ratings are middling — better than some big six suppliers, worse than Octopus. The Octopus app is significantly better than EDF's.
For solar and EV owners
If you have solar panels, a battery, an EV, or a heat pump, Octopus is the clear winner. Their tariff range is designed around these technologies. EDF has a basic EV tariff but nothing approaching the breadth of Octopus's smart tariff ecosystem.
When EDF might be better
If you want the cheapest fixed-rate deal for the next 12 months and don't have solar, an EV, or any interest in smart tariffs, EDF's fixed rates can undercut Octopus. Check the specific rates for your postcode and usage — the difference is often small enough that the £50 referral credit swings the 12-month calculation back toward Octopus.