EDF Slumps on Report It Underestimated Cost of Waste Storage

  • Deep storage project may cost 30 billion euros, Les Echos says
  • French utility sees `optimizations' at site reducing expense
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Electricite de France SA, the operator of 58 atomic reactors in France, dropped to a record in Paris trading after newspaper Les Echos said the utility may have underestimated the cost of storing its most radioactive waste.

EDF fell 4.4 percent to 11.96 euros on Tuesday, the lowest close since the stock began trading in the French capital in 2005.