In 2009, the Austrian TSO Austrian Power Grid (APG) published a master plan regarding the network development until 2020. Due to drastic changes in the European electricity economy, such as the phasing out of nuclear production in Germany and Switzerland for example, and the installation of more RES power plants like PV and wind power, this plan had to be adapted. Thus, the new master plan 2030 was formulated and published in 2012 (cf. APG 2013). Although it is an Austrian network development plan, it is important to also consider the surrounding European electricity system and the simulations have therefore been performed using ATLANTIS.