EDF Energy
Backed by the UK’s biggest nuclear generator
Pros
- Backed by the UK’s largest nuclear generation fleet
- Low-carbon electricity mix
Cons
- Scored below 60% in Which?’s 2026 customer satisfaction survey
Why consider EDF Energy
EDF Energy is backed by EDF’s UK nuclear fleet, one of the country’s largest sources of low-carbon electricity — alongside fixed-rate price protection options.
How switching works
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Frequently asked questions
Where does EDF Energy’s electricity come from?
EDF is backed by the UK’s largest nuclear generation fleet, which produces a genuinely low-carbon electricity mix — a different route to low-carbon supply than wind/solar-backed competitors.
Is it free to switch energy supplier?
Yes — switching suppliers in the UK is free, and by law your physical energy supply is never interrupted during a switch.
How long does switching take?
Typically around 3 weeks from agreeing to switch to your new supplier taking over, though some suppliers offer faster switches.
Will I lose supply while I switch?
No — the gas and electricity itself doesn’t change, only who bills you for it. No engineer visit or physical work is needed at your property.
Can I switch if I’m on a fixed-term contract?
Usually yes, penalty-free, if your current term ends within 49 days. Switching earlier may trigger an exit fee — worth checking your current contract first.
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