World’s largest folding solar roof inaugurated over wastewater treatment plant in Switzerland

Sun, 23 Nov 2025 11:48:44 +1100

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
<https://reneweconomy.com.au/worlds-largest-folding-solar-roof-inaugurated-over-wastewater-treatment-plant-in-switzerland/>

"The world’s largest solar folding roof has been inaugurated in Switzerland
above the Lake Thun wastewater treatment plant, which is expected to generate 3
gigawatt-hours (GWh) of clean electricity each year.

Swiss company DHP Technology has developed the Horizon solar folding roof,
designed to allow for dual use of industrial and transport areas.

Using a patented folding mechanism based on cable car technology, the solar
modules are suspended from cables in folding roof assemblies that can easily
retract and extend, ensuring there is no disruption to the primary role of any
location.

The lightweight system also reduces material usage by up to 50 per cent
compared to similar fixed solar roof systems. The specifics of the technology
also allows for very wide support spacing and significant headroom, ensuring
operations can continue underneath during operation and maintenance.

DHP envisages its foldable solar roofs being used above carparks, wastewater
treatment plants, motorway rest areas, and logistics areas."

Share and enjoy,
               *** Xanni ***
--
mailto:xanni@xanadu.net               Andrew Pam
http://xanadu.com.au/                 Chief Scientist, Xanadu
https://glasswings.com.au/            Partner, Glass Wings
https://sericyb.com.au/               Manager, Serious Cybernetics

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