Pongau substation

In the municipality of St. Johann im Pongau (directly adjacent to the existing Pongau substation of Salzburg Netz GmbH and the Arthurwerk substation of Netz Oberösterreich GmbH), APG's 380/220/110-kV Pongau substation was newly constructed and commissioned in the first quarter of 2025. In particular, this facility includes the construction of a 380 kV GIS switchgear, two 380/220 kV transformers - as an interconnection point between the 380 and 220 kV grids - to support the Weißenbach substation, and two 380/110 kV transformers to support the Salzburg Netz GmbH distribution grid. 

The 380 kV system 456 of the Salzburg line coming from the Salzburg substation and continuing to the Kaprun substation is integrated into the Pongau substation. In addition, two 220 kV systems (221 and 222) of the 220 kV Pongau-Weißenbach line leading to the Weißenbach substation (Styria) are integrated. The 380/110 kV transformers are connected to the 110 kV system in the Pongau substation of Salzburg Netz GmbH via 110 kV cable systems.

The new Pongau substation is an additional feed-in point for the Salzburg Netz GmbH distribution network, which has increased the reliability of the electricity supply in the region. It is also an important part of the east-west connection in the APG grid and connects the Ennstal line coming from the Weißenbach substation to the pumped storage power plants in Kaprun. This enables the supra-regional distribution and utilisation of renewable energy.