On 8 January 2021, a grid frequency deviation occurred in Europe. ENTSO-E published an intermediate report on the incident on 26 February. In an interview, Markus Imhof, Head of Balancing & Scheduling, explains the role that Swissgrid played in this event.

Swissgrid and SiL have renovated their electrical facilities at the Romanel substation. The work has now been completed. Yves-André Bagnoud, Head of the Research & Project Office at Lausanne industrial Services (SiL), tells us about the history of this substation and its importance for SiL.

6,700 kilometres of lines, 12,000 pylons and 141 substations – the Swiss extra-high-voltage grid is a complex web. This becomes particularly apparent when it is to be represented graphically.

High above Rhäzüns, Swissgrid replaced the pylon of a 380-kilovolt line in a construction period lasting only two months.

The grid needs to be upgraded and expanded in line with demand to ensure the successful implementation of the Energy Strategy 2050. That much is clear. But grid projects often take longer than planned. Why is that?

Giorgia, the mini-tunnel boring machine sporting the colors of Valais and of Switzerland, was recently lowered into the Verney shaft. Impressive pictures have been taken.

The importance of the Gotthard route applies not only to road traffic, but also to electricity transmission. Swissgrid's extra-high voltage line Mettlen – Airolo runs via the Gotthard Pass and is vital for north-south electricity transport.

All electricians will tell you that the first thing they learned at the start of their training is to make sure the power was off before working. Since 1 October 2020, this is no longer entirely correct in Switzerland.

Future Grid Maintenance Managers at Swissgrid have to complete a very demanding training programme. After all, they are responsible for the safe operation and maintenance of the lines and substations in their assigned area.

A giant made of steel with 26 axles is crawling its way to Mühleberg: the entire load weighs 362 tons and is almost 75 metres long.

After the power failure in Valais, Swissgrid initiated some investigations. The incident was the result of a combination of technical and human factors. Swissgrid is learning from it and has taken appropriate action.

The old extra-high-voltage grid in Goms is being dismantled; a move that will significantly improve the natural scenery on the valley floor. An interview with Gerhard Kiechler, the Mayor of Goms (VS) about the power line and energy-rich Goms.