LONDON: The European Union sold 3.462 million spot EU carbon permits from the third phase (2013-2020) of its emissions trading scheme on EEX at 3.99 euros ($5.21) a tonne each on Monday, traders said.

The sale attracted bids for 10.5 million units.

The benchmark EU carbon futures contract was trading at 4.05 euros a tonne at 0902 GMT.