Photovoltaic system – Riverside

Short description

On the Riverside plot in Zuchwil, Tetrag implemented a system solution for energy management and monitoring for one of the largest retrofitted photovoltaic installations in Switzerland.

The project

The roof of the large industrial hall on the Riverside plot has been home to one of the most powerful PV systems in Switzerland since autumn 2015. It underscores the sustainability strategy of its investor, the Swiss Prime Investment Foundation, and the energy-efficient policies of the energy community in Zuchwil. The installation was awarded the Swiss Solar Prize in 2016. The project involved the creation of a monitoring system for the 273 inverters by Tetrag Automation AG. Alongside production monitoring, the system also detects faults and partial shading. 

Services in detail

  • Monitoring of 273 inverters
  • Management of incoming supply by operators of distribution network
  • Regulating power from Swissgrid


  • Control of incoming supply by operators of distribution network and provision of regulating power for Swissgrid real-time communication with the inverters
  • Detection of faults and partial shading


  • Peak output of 5.7 MW enough to cover the needs of 1,027 single-family homes
  • Savings of 595 t CO2 
Location Allmendweg
4528 Zuchwil
Status completed
Construction volume (value of our services) 100.000 CHF
Start of construction July 2015
Completion October 2015
Building owner Swiss Prime Anlagestiftung (SPA)
Contracting entity Helion Solar
General management Helion Solar
Project management Implenia Engineering
Project designer Tetrag Automation AG
Construction management Tetrag Automation AG
Planning Tetrag Automation AG
Number of meters 305
Number of locations 1