German utility E.On AG launched a 29.1 billion euro ($34.72 billion) all-cash bid for ENDESA (ELE) on Tuesday, topping a previous offer from Gas Natural by more than 30 percent and threatening to disrupt carefully laid plans for Spanish power-market consolidation.

Endesa said in a statement that the E.On offer was "clearly" the better of the two, but added that it still did not adequately reflect Endesa's true value. [ more ]

Shares of Endesa were up 15% in yesterday's trading.