European power derivatives volumes on the European Energy Exchange in September rose 65% from a year ago to 373.3 TWh bringing total year-to-date traded power to 2,788 TWh.
The majority of the September total, 248.2 TWh, was traded on EEX's German/Austrian power market (Phelix Futures), up 65% from September last year, with options on German power rising threefold to 18.6 TWh, the Leipzig-based exchange said.
French power volumes rose 57% on year to 46 TWh, while Italian power volumes rose 33% on year to 51 TWh, it added.
The recently launched Spanish market has established itself as the fourth largest power market on EEX with 6.5 TWh traded in September.
Other markets added 2 TWh including Nordic, Benelux and UK power amongst others, it said.
The total derivatives trading volume in September includes 199 TWh from OTC-clearing via EEX's clearing unit (ECC), the exchange said.
Deutsche Boerse-owned EEX traditionally operates German and French power derivatives markets and has expanded its service to include Italian, Spanish, Dutch, Belgian, Swiss, Greek, Nordic and UK power futures.
The exchange has been highly successful in expanding its market share in its core European power markets Germany, France and Italy.
Overall, trading volumes for the first half of 2016 jumped 66% year on year to 1,971 TWh.
However, of that only 897 TWh were trade-executed on the exchange itself, with 'broker executed' volumes still accounting for the majority of power trading volumes across Europe.