Economic analysis is becoming an increasingly important part of competition enforcement. On 6 January 2010, the European Commission (Commission) issued recommendations for the generation and presentation of economic and empirical evidence in Article 101 & 102 TFEU (formerly Article 81 & 82 EC) investigations and merger cases. The Commission has also issued guidance on how to respond in a timely and accurate manner to its requests for data (e.g. prices, turnover, capacity, entry and exit decisions). The new guidelines will apply on a provisional basis immediately, but comments on the new guidance can be sent to the Commission by 3 March 2010.