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In the framework of their cooperation, the European Energy Exchange AG (EEX) and the French Powernext SA integrated their Power Spot and Derivatives Markets in 2009.
In August 2010, a total volume of 86.0 TWh was traded on the joint subsidiaries EPEX Spot SE and EEX Power Derivatives (same month of the previous year: 81.2 TWh).
Power trading on the day-ahead auctions on EPEX Spot accounted for a total of 20,570,802 MWh and can be broken down as follows:
| Areas | Volume (MWh) | Volume for the previous year (MWh) | Base / peak on a monthly average (Euro/MWh) |
| D/A | 16,050,576 | 10,345,114 | 39.80 / 49.23 |
| FR | 3,781,499 | 3,614,676 | 37.078 / 44.671 |
| CH | 738,727 | 681,949 | 40.06 / 49.09 |
- Germany 867,775 MWh, same month of the previous year 527,239 MWh
- France 47,474 MWh, same month of the previous year 68,224 MWh
The volume in power derivatives trading on EEX Power Derivatives amounted to 64.5 TWh in August (same month of the previous year: 66.0 TWh). The total volume includes 2.1 TWh from trading in French Power Futures. The derivatives trading volume comprises 33.6 TWh from OTC clearing. On 31 August 2010, the open interest amounted to 580.5 TWh. On the Power Derivatives Market, the base load for the year 2011 was quoted at EUR 51.10 per MWh (Germany) and at EUR 54.01 per MWh (France) on 31 August 2010. The peak load price for the year 2011 amounted to EUR 64.99 per MWh (Germany) and to EUR 70.00 per MWh (France).
