News
PAWI Winterthur Puts New Photovoltaic System into Operation
Since October 1, 2025, the PAWI Winterthur photovoltaic system has been producing its own solar power. This makes Winterthur the last of our three production sites to switch to solar energy. Moreover, the system represents an important milestone, carrying both ecological and strategic significance. In addition, its commissioning marks a key step in our energy transition journey.
8 october 2025
Roof renovation meets energy transition
Over the course of seven months, the three large roof areas of the production and warehouse halls were fully renovated, sealed, and fitted with state-of-the-art insulation. At the same time, the technical foundation for a powerful solar system was put in place.
The result: more than 1,200 PV modules covering an area of around 2,500 m², now feeding electricity directly into the factory grid.
Technical highlights at a glance
- More than 1,200 PV modules, each measuring 1800 x 1134 x 30 millimeters
- Four high-performance inverters converting solar energy into usable electricity
- Orange power cables (Ø 5 cm) as the “lifelines” between the roof and the transformer station
- In-house power production since 01.10.2025 – a milestone for greater independence and sustainability
Teamwork across all rooftops
This project was a true team effort: Theo Huber AG provided scaffolding, Maillard Bedachungen handled the renovation, sealing, and metalwork, while ELPAG took care of drilling, cable routes, and the connection to the transformer station. CKW was responsible for installing the PV system. And of course, an internal project team worked tirelessly on coordination, communication, and even parking management.
The fact that all this was accomplished during ongoing production makes the result even more impressive. A long period of rain, extreme heat, and tight construction schedules were challenges that could only be overcome through close collaboration and a great deal of flexibility.
A win for both environment and business
With this investment, we are making another active contribution to the energy transition while also strengthening our economic independence. The photovoltaic system will reduce our CO₂ footprint in the long term, lower energy costs, and increase supply security. On top of that, our roofs are now better insulated, safer to access, and partially renewed skylights bring more natural light into our production halls.
Our Solar Energy at a Glance
With photovoltaic systems, we cover a large part of our energy needs and make an active contribution to the energy transition – in Winterthur, Singen, and Warsaw.
