Swiss logistics company invests in 2.34 MW rooftop solar PV system employing Delta inverters

3/10/17, 8:26 AM -

In Frauenfeld, Switzerland, the logistics firm Rieser + Vetter installed on their distribution center one of the largest Swiss commercial rooftop PV systems. 46 Delta RPI M50A 55 kVA solar inverters were installed. 

Delta solar inverters installed.
Rieser + Vetter logistics distribution center with 2.34 MWp rooftop PV system with 46 Delta RPI M50A 55 kVA solar inverters.

The firm Rieser + Vetter specializes in transportation of goods and materials throughout Switzerland that are large, bulky or delicate, such as fine furniture. To offset the carbon from the fuel-powered lorries used by the firm the owners decided to install a rooftop PV system at their Frauenfeld distribution center. Besides the environmental benefits, the solar PV system has financial benefits in Switzerland with its feed-in tariff concept. The solar power generated receives an annual remuneration which offsets the operating costs of the firm.

Installer Fuchs Wohnbau – distribution partner Baywa r.e.

Fuchs Wohnbau AG Solartechnik was selected for the system engineering and main turnkey construction of the solar project. PV arrays were installed on several warehouse rooftops at the Frauenfeld site. 8293 LG solar modules in total were utilized in the solar PV system. 46 Delta RPI M50A inverters (each with a rated power output of 55 kVA) were selected for the PV project and installed on several of the warehouse exteriors. The solar inverters were purchased from Delta sales distribution partner, Baywa r.e. 

IP65 protection rating providing secure moisture seal

The RPI-series inverters have a high maximum efficiency of 98.6% to help ensure a good solar energy yield. The rugged aluminum chassis and IP65 protection rating provide a secure moisture seal that is fitting for the periodic rain and snow common in this region of Switzerland. According to Erich Stutz, the Solar Installation Manager at Fuchs Wohnbau AG, “Delta inverters were chosen due to the compact form factor of the units with a very high power output of 55 kWs. In addition, the good reputation of Delta as a financially viable manufacturer gives us confidence that they will be around in the long term to support their inverters for the entire guarantee period.”

Construction of the project began in April 2016 and commissioning of the system took place in September 2016. The new solar system now generates around 2.1 GWh of electricity per year, and the logistics firm is expected to reduce its carbon footprint by about 1,688 tonnes of carbon dioxide per year. Delta is working together with Fuchs Wohnbau AG to supply its solar inverters for further PV projects within Switzerland. (HCN)

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