Throughout 2013, many important decisions have been taken with respect to the functioning of the network industries in Belgium. The energy sector was confronted with the annulment of the electricity transmission tariffs and the partial annulment of the federal transposition of the Third Energy Package. In the telecom sector, it was ruled that the one-off fee which replaced the former one-off licence fee charged to mobile telephone operators in order to guarantee optimal use of radio frequencies is lawful. The postal sector witnessed the European Commission’s approval of the public service compensation for bpost. Finally, in the water sector, Belgium was ordered to pay a substantial fine for failing to comply with the requirements concerning the treatment of urban waste-water.