In an announcement made on Friday (October 26), the company revealed that prices would go up by an average of 10.8 per cent - the biggest percentage increase of the year (2012).
Customers on a dual fuel tariff, paying monthly via Direct Debit, can now expect to face paying an annual bill of around Â£1,252 as a result of the hike - representing an increase of Â£123.
It will come into effect from December 7.
As with other suppliers, EDF - which is also partaking in the Warm Home Discount Scheme - has attributed the decision to implement a price rise to higher costs. A spokesman for the company stated that the price of energy at wholesale has risen by four per cent; meanwhile distribution charges have also risen by nine per cent.
Commenting following the announcement, EDF director, Martin Lawrence, said: "We know that customers will not welcome this news and do not want to see prices going up.
"Our new prices will however be cheaper on average than those of all the other major suppliers which have announced standard price rises so far this autumn."
Somewhat unsurprisingly, consumer groups have questioned the decision.
Energy expert at Consumer Focus, Audrey Gallacher, said: "Another price rise, hot on the heels of those we've already seen, will again feed into consumer concerns on pack behaviour and whether price changes are driven by real supply and demands issues."
After this latest price rise, E.ON remains as the only big six energy supplier not to enforce higher prices, although it is expected to take such action at the start of next year.
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