Axpo and EKZ secure supply in Stäfa

Stäfa ZH - Axpo and EKZ are increasing the security of the power supply in the greater Stäfa ZH area through a joint project. An open air line near a wooded area is going underground and a substation is being modernized.

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In the communities around Stäfa, the demand for electrical energy has been consistently high for years. Axpo and Elektrizitätswerke des Kantons Zürich ( EKZ) have therefore taken extensive measures to ensure that the region continues to have a reliable power supply, according to the joint media release from the two energy providers

EKZ built, tested and commissioned the new Stäfa substation in just two years. The new system is much smaller and significantly more powerful than the old, around 45-year-old system. It is also less prone to failure than the outdoor switchgear, which has since been dismantled, because all high-voltage circuits are in the building. The total cost of renovating the Stäfa substation is around 8 million francs. This includes the renaturation of the area freed by the demolition of the old substation with ponds, hedges and a wet meadow. The Stäfa substation is connected to the Axpo high-voltage network via two 110-kilovolt lines.

As part of the Axpo and EKZ project, Axpo is laying the 110 kilovolt line between the Brunnenwisli area and the cable that has already been laid in front of the Stäfa substation. The open-air pipeline has so far run on this section along a forest area, so that there is an increased risk of failure due to kinked or uprooted trees in the event of strong storms. gba