LONDON (Reuters) - Britain auctioned 2,594,000 UK emission permits at 48.75 pounds ($66.79) a tonne each on Wednesday, the ICE website showed.
Out of 17 bidders, nine were successful and the auction had a cover ratio of 3.32, the data showed.
Britain's Emissions Trading System (ETS) started trading in May to replace the European Union's ETS after the country left the bloc.
($1 = 0.7299 pounds)
(Reporting By Susanna Twidale; editing by David Evans)