Which? uses cookies to improve our sites and by continuing you agree to our cookies policy

Top five cheapest energy deals for September

Which? reveals you could save up to £215

Handshake with energy concept

Find out whether switching to a small energy supplier could help you save

Each month we scour the energy market to bring you the top 5 cheapest energy deals – and for September, Extra Energy and First Utility are both offering annual dual fuel tariffs with an annual cost of less than £1,000.

It seems that the smaller energy suppliers are still offering consumers much cheaper tariffs than the ‘Big Six’. Choosing the Extra Energy ValuePlus tariff would save you £215 a year compared with opting for the priciest standard tariff from one of the bigger suppliers.

You can find out how the small energy suppliers compare to the big brands for customer satisfaction – including 2014’s top-rated energy firm – using our energy company reviews.

Top five cheapest energy deals

All prices listed below are for dual fuel tariffs, paying by monthly Direct Debit. They have been calculated using Ofgem average consumption figures of 13,500kWh for gas and 3,200kWh for electricity.

1. Extra Energy ValuePlus Fixed Price Oct 2015 v1 £990

2. First Utility iSave Fixed September 2015 £992

3. Sainsbury’s Energy Fixed Price October 2015 £1,009

4. OVO Energy Better Energy (Online) £1,011

5. Green Star Energy Rate Saver Fixed 12 Months (Online) £1,019

The tariffs listed above are all fixed for a minimum of 12 months from September 2014, so they offer long-term peace of mind. This means, however, that customers won’t benefit from any price cuts while they are signed up. Exit fees may apply if you want to switch before the end of the 12 months.

Current standard tariffs from the Big Six

Here are the standard tariffs from the Big Six suppliers:

1. Eon £1,159.50 (£170 more expensive than Extra Energy)

2. EDF £1,163.60 (£174 more expensive)

3. SSE £1,174.24 (£184 more expensive)

4. Scottish Power £1,188.62 (£199 more expensive)

5. British Gas £1,192.97 (£203 more expensive)

6. Npower £1,204.91 (£215 more expensive)

Figures are accurate as of 02 September 2014.

More on this…

• Want better customer service? Find out what energy customers think of their supplier 
• Check out our guide to using less electricity
• See if you could save by installing a wood burning stove

Back to top