Best and worst energy companies revealed

The 2012 Which? Switch satisfaction survey today reveals the best and worst energy suppliers using responses from the biggest publicly available survey of its kind.

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Which? reveals the best and worst energy suppliers

We surveyed more than 8,000 members of the public to reveal 2012's winners and losers and reveal full results on our best and worst energy companies page.

Best energy company

Excellent customer service and clear bills helped smaller companies come top of the table, with Good Energy getting an impressive customer score of 84% closely followed by Utility Warehouse (78%) and Ecotricity (77%).

Although Good Energy tops our table, it won't give you the cheapest bills – it's about 25% more than the cheapest tariff on the market, but that's only 7% more than British Gas's standard tariff. One customer said: 'not the cheapest, but I wouldn't expect it to be given their investment in renewables'.

You can see detailed information about each gas and electricity company in our energy suppliers section, from big names such as British Gas and EDF Energy through to smaller companies such as Good Energy and Utility Warehouse.

Time to switch energy supplier?

Despite dominating the market, the 'big six' energy suppliers (British Gas, EDF Energy, Eon, Npower, SSE and Scottish Power) end up in the bottom half of the table. Of the big six energy suppliers, SSE comes first with a customer score of 51% and Npower comes last with only 41%.

Npower received the worst customer score and only two stars for bills, helping you to save energy and value for money. One customer told us: 'Recently they keep asking more and more for my monthly direct debit payments, and at present I am unable to turn the heating on.'

Overall, a worrying 40% of Which? members reported problems with their energy supplier in the last two years. The most common problems people reported were billing and meter problems, including mistakes on bills, inaccurate meter readings and missing bills. 

More on this...

  • Use this letter to complain if your energy company overcharges you
  • Find out what Which? is doing to tackle energy complaints
  • How you can support the the Which? Affordable Energy Campaign
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