It is only a matter of time before the remainder of the Big Six energy suppliers hike their prices, which could mean now is the right time for consumers to switch energy deals.
The Telegraph reported that once the other four - E.ON, Scottish and Southern Energy, npower and EDF - have raised their tariffs, householders' energy bills will have increased by 50 per cent since 2007.
By then, the average annual cost of energy could stand at £1,450.
Mark Todd, director of energy comparison site energyhelpline.com, commented: "Many will feel unfairly penalised at precisely the moment they can least afford it."
However, there are some ways consumers can cut their bills after comparing different packages and switching if they find a better deal.
One includes paying all energy bills on time, as some providers will offer prompt payment discounts of up to £100 a year.
Customers could also pay by direct debit, as this reduces the admin fee suppliers can levy in the case of payment by cheque or debit card.
If you want to find out more about gas and electricity and how you could save up to £453 in minutes, click here.
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