Environmental campaign group Greenpeace has filed a complaint with the European commission, alleging illegal state aid in the development of the controversial Mochovce nuclear power plant.
"Market-distorting measures" were put in place by Slovak authorities to persuade Slovak electricity utility Slovenske elektrarne, in which Italian firm Enel has a majority share, to participate in "what would otherwise have been an unviable and unattractive project," Greenpeace claims.
The Slovak state has "manipulated the figures" by "artificially lowering levies paid towards decommissioning and waste funds," it says.