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New Swiss Glacier Reservoir Project Shrinks, Becomes More Expensive Amid Environmental Concerns
🇨🇭 Switzerland /Environment & Climate

New Swiss Glacier Reservoir Project Shrinks, Becomes More Expensive Amid Environmental Concerns

From Neue Zürcher Zeitung · () German

Translated from German, summarized and contextualized by DistantNews.

At a glance

News Named sources Context piece
  • A new hydroelectric project, "Gornerli," near Zermatt aims to generate winter electricity for 120,000 households using water from the Gorner Glacier.
  • The project involves building a 100-meter dam, but the reservoir's capacity has been reduced by 20%, leading to lower electricity output than initially planned.
  • Environmental groups criticize the project for impacting a pristine glacial landscape and accelerating glacier melt, despite assurances from the project's operator about long-term water availability.

The "Gornerli" project represents a significant, albeit controversial, pillar of Switzerland's energy transition strategy. Situated in the breathtaking Monte Rosa region near Zermatt, this ambitious undertaking by Grande Dixence SA aims to harness the power of the receding Gorner Glacier to secure vital winter electricity for approximately 120,000 households.

While lauded as a priority project under the federal government's energy policy, "Gornerli" faces considerable opposition from environmental and landscape protection advocates. They decry the plan to create an artificial lake in one of the Alps' last untouched glacial landscapes as a "taboo-breaking" act, potentially undermining a century of conservation efforts.

It is crucial for us that the ETH studies conclude that there will be enough water in the region until the end of the century to realize the Gornerli project in this form.

— Beat ImbodenDirector of Grande Dixence SA, commenting on the long-term water availability projections for the project.

Recent studies by ETH Zurich and other experts have led to adjustments in the project's design. The planned dam height remains around 100 meters, but the reservoir's volume has been reduced by 20% to 120 million cubic meters. This recalibration, according to Grande Dixence director Beat Imboden, ensures the project's viability based on projections of sufficient water availability throughout the century, even as initial glacial meltwater flows are expected to increase before eventually decreasing.

Despite these adjustments, the project's timeline and output have been revised. Full operational capacity is not expected until 2035, with the glacier fully receding from the reservoir area between 2045 and 2060. Consequently, the projected winter storage capacity for 2040 is now estimated at 435 GWh, down from the original 650 GWh. This scaling back, coupled with the environmental concerns, highlights the complex balancing act between Switzerland's energy needs and its commitment to preserving its unique natural heritage.

The creation of an artificial lake there is a 'taboo-breaking' act in Switzerland's hundred-year-old conservation policy.

— Landscape protection advocatesExpressing strong opposition to the construction of the reservoir in a pristine glacial environment.
DistantNews Editorial

Originally published by Neue Zürcher Zeitung in German. Translated, summarized, and contextualized by our editorial team with added local perspective. Read our editorial standards.

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