Telegraph: Energy producers and other companies anxious to increase their allowances made more than 16m bids for just 4m credits offered at a price of 16.15 per tonne. Buyers who bid at the offered price received 17.5pc of the credits requested, those who bid significantly higher received all their credits and those who bid lower received nothing. The price for one tonne of carbon emissions rose 1.39pc to 16.78 on the European futures market following the auction, which was open to …