Who are the larger energy suppliers?

The "Big Six" is the name sometimes collectively given to the six larger energy companies who supply most of Britain's gas and electricity. Each of them generate electricity, and deliver both gas and electricity to our homes and businesses. They are:

- Centrica plc (three retail brands: British Gas, Scottish Gas and Nwy Prydain in England, Scotland and Wales respectively)
- Scottish and Southern Energy (SSE)
- RWE npower
- EDF Energy
- ScottishPower

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