---
title: WWTP Thunersee - The world's largest solar folding roof
description: "The world’s largest folding solar roof: HELIOFLEX at ARA Thunersee generates 3 GWh of solar power annually without extra land use."
---

[References ](https://www.dhp-technology.ch/en/references)

# [WWTP Thunersee - The world's largest solar folding roof](https://www.dhp-technology.ch/en/references/ara-thunersee)

 Written by [DHP](https://www.dhp-technology.ch/en/references/author/dhp) | Nov 26, 2025 5:59:29 PM

 

[View full post](https://www.dhp-technology.ch/en/references/ara-thunersee)

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