Yesterday evening, Swissgrid and its partners celebrated the end of the rough construction of the new substation in Biasca (TI). In addition to the necessary technical installations, the new building encompasses much more.

The transmission system is a key factor for the successful implementation of the Confederation’s Energy Strategy. Swissgrid is making the transmission system fit for the future to make sure that electricity can continue to flow reliably. Every project carried out as part of strategic grid planning is different, but one thing is essential: the planning must be based on solid clarifications and findings. Depending on the area where a new line is planned, this may involve geological investigations, for example in the form of exploratory boreholes like those drilled on the Glaubenberg.

There are a number of persistent myths about the grid. But are they really true? Fortunately, Swissgrid expert Marc Vogel knows the facts.

Both the energy system and the transmission system are changing. Swissgrid is addressing the increasing complexity by taking strategic measures to modernise the grid and create a digitalised company.

Even when there’s little wind, rainfall or sunshine – the demand for electricity will still have to be met after the energy transition. This can be achieved using a range of storage technologies that perform different functions within the energy system.

For those unfamiliar with our line of work, it might seem quite abstract to imagine this process: How is a conductor lifted from the ground during installation?

The Erlenmatt Ost site in Basel is home to one of the largest self-consumption communities in Switzerland, where over 500 people consume mainly locally produced, renewable electricity. The project, which won the Watt d’Or award, signifies the trend throughout Switzerland towards a more decentralised electricity system.

Deadwood in forests promotes biodiversity. This is no different on the routes of overhead lines. Since deadwood is increasingly left standing or lying in place under lines, the rare Alpine longhorn beetle makes an appearance from time to time.

A large part of the extra-high-voltage grid operated by Swissgrid consists of overhead lines. Electricity pylons ensure the necessary stability and safety for power transmission. The grid comprises around 12,000 pylons and 6,700 kilometres of lines. As the regular monitoring of exposed infrastructure is very time-consuming, Swissgrid launched a feasibility study called «Pylonian» in 2021. The objective was to monitor selected electricity pylons around the clock using sensors based on Internet of Things technology.