In a letter published in the Daily Telegraph, he added that the company's decision to increase the cost of its gas and electricity was "wholly" due to wholesale energy prices.
"These costs are out of our control. In fact, to mitigate these effects, we have led the UK industry in helping the most vulnerable," he explained.
Mr de Rivaz added that his company were in full support of an "open, single energy market in Europe".
Last month, EDF Energy increased the cost of gas and electricity by 22 per cent and 17 per cent respectively.
In an effort to help consumers, the firm also introduced a new tariff that allows them to fix their prices until October 2009.
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