Zizers GR/Stuttgart – The Grisons-based company dhp Technology is building its largest folding solar roof to date in Stuttgart. By spring 2026, the main wastewater treatment plant will be equipped with 5280 modules covering an area of almost two football fields. With electricity from renewable sources, the wastewater treatment plant covers 11 percent of its own needs.
Zizers-based dhp Technology is building its largest folding solar roof to date for the main wastewater treatment plant in Stuttgart-Mühlhausen. By spring 2026, 5280 modules are to be installed on an area of 17,000 square meters. According to a statement, the system, with a capacity of 2745 kilowatts peak, is the largest solar folding roof installed by dhp.
With the Bündner technology, the sewage treatment plant in Baden-Württemberg’s state capital can generate up to 11 percent of its annual consumption itself. The medium-term target is 18 percent.
According to the plans of the Eigenbetrieb Stadtentwässerung Stuttgart(SES), a span with solar modules is planned not only for the aeration basin in the north of the 25-hectare plant, but also for the area to the south, which is of a similar size. As SES informs, the investment will save more than 900 tons of carbon dioxide. ce/heg