20.05.2026
A major milestone has been reached by Gornerli multi-purpose reservoir
Sion – The new Gornerli multi-purpose reservoir project above Zermatt has reached another important milestone. Extensive hydrological and climate studies of the entire Grande Dixence system now allow for the definitive sizing of the storage volume. The construction project and the studies on natural hazards are close to completion, while the logistics concept is also at an advanced stage. In parallel with the ongoing project development, the dialogue with stakeholders on a range of environmental and landscape issues will be pursued over the coming months. The study findings confirm Gornerli’s key role in the future winter supply of renewable electricity in Switzerland, for various regional objectives such as flood protection, long-term water supply, and a strategic energy concept for Zermatt
27.02.2026
Second Information session in Zermatt
Grande Dixence SA intends to provide the residents of Zermatt with an update on the multi-purpose reservoir Gornerli project. Various topics will be discussed at this event, including the logistics planned for the construction phase. An information session will be held on Wednesday 4 March at 6:00 p.m. at the Triftbachhalle in Zermatt. Additional details are available in the invitation flyer (available in German only)
05.09.2025
Over 400 Attendees at Grande Dixence’s First Information Evening
On 4 September, Grande Dixence hosted its inaugural information evening in Zermatt to present the Gornerli project. This event marked the beginning of a new series of public meetings aimed at fostering dialogue with the local community. The objective is clear: to share transparent, first-hand information and offer residents the opportunity to ask questions and voice concerns about the construction project.
The turnout was remarkable, with more than 400 participants in attendance. This strong interest reinforces our commitment to engaging openly with the population.
During the evening, Grande Dixence provided insights into several key aspects of the project:
- The company’s current role in Zermatt
- The scope and framework of the Gornerli project
- Natural risks associated with the Gorner Glacier area
- The dam’s contribution to flood protection
- Water supply infrastructure
- Electricity supply in Zermatt
Grande Dixence is committed to continuing this dialogue and will be organizing additional information evenings in the future.
04.09.2025
Information session in Zermatt
Grande Dixence SA intends to provide the residents of Zermatt with an update on the multi-purpose reservoir Gornerli project. An information session will be held on Thursday 4 September at 6:30 p.m. at the Triftbachhalle in Zermatt. Additional details are available in the invitation flyer (available in German only)
April 2025
Gornerli reporting – the most important facts
Various false statements were published in media articles about the Gornerli project, especially on the topics of landscape protection, environmental impacts and tourism. The complexity of the project clearly leads to repeated misunderstandings. The project is described in detail on our website, and we answer the most frequently asked questions in the Dialogue section. The most important facts at a glance.
29.11.24
Gornerli support group is committed to realising the project rapidly.
The Swiss Federal Government, the Canton of Valais, Grande Dixence SA and representatives of the concession communes have founded the Gornerli support group in the presence of Federal Councillor Albert Rösti. At the first support group meeting, all participants confirmed their willingness to coordinate further procedural steps and milestones and to work closely together. This means this multi-purpose storage project, which has many valuable aspects, will be realised in a targeted manner.
