French state-controlled power giant Electricite de France SA's (EDF.FR) initial investment plans remain unchanged, its Chief Financial Officer Thomas Piquemal said Wednesday, despite it facing extra costs from additional measures required by France's nuclear safety watchdog.

In a statement to Dow Jones Newswires, Piquemal recalled that in July last year, EDF said it would increase investments from EUR10 billion in 2010 to a maximum of EUR15 billion in 2015.

Tuesday, the Autorite de Surete Nucleaire, or ASN, in its final report over safety at all of France's 58 nuclear reactors, noted that although safety was so far ensured, additional measures were needed that would cost EDF, the owner and operator of all the reactors, "several billion euros."

"I can confirm that this investment path is unchanged," Piquemal said, after a preliminary assessment of costs and works timetable linked to the additional measures required by the ASN. He declined to further elaborate.

Earlier, in an interview with French daily Le Monde, EDF's Chairman and Chief Executive Henri Proglio said that the extra costs would amount to below EUR10 billion in total, a good part of which has already been taken into account in the EUR40 billion the group had planned to spend to extend the lifespan of its French nuclear reactors, even before the Fukushima nuclear catastrophe.