Lake Thun WWTP clarifier gets solar roof
ARA Thunersee is installing a folding roof from Graubünden-based manufacturer dhp technology on its wastewater treatment tank. This was decided by the delegates of the municipal association. With a solar surface area of 23,000 square metres, it will be the largest system of its kind in Switzerland.
ARA Thunersee will also generate solar power in future. As decided by the delegates of the municipal association on 1 November, a solar folding roof is to be installed on the roof of the wastewater treatment basin. They decided to invest 12.4 million Swiss francs in the project, according to a press release. This should be amortised within 17 years.
The folding roof from the manufacturer dhp technology, based in Zizers, will have a solar module surface area of 23,000 square metres. This will make it the largest photovoltaic system at a Swiss wastewater treatment plant and one of the largest in the canton of Bern. It will have an output of 3,000 kilowatts peak and generate 3 gigawatt hours of electricity per year.
In addition, ARA Thunersee already produces 13 gigawatt hours of biomethane per year and feeds this into the natural gas grid of Energie Thun AG.