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Via Primo Maggio
ZIP Code
Trezzano Rosa

Company Profile:
The Italian Company SIEL S.p.A. since 1983 is one of the main producers of certified ISO 9001-2000 emergency power supply systems for critical applications.
In year 2000 SIEL successfully approached the market of PV and wind energy. Now its SIAC SOLEIL and SIAC WIND WAVE brands range its top-quality single-phase inverters, high-power solar three-phase inverters and wind turbine inverters.
Over 900 MW of SIAC SOLEIL inverters are already installed throughout Europe.
SIEL Spa Headquarter is near Milano.

Inverter manufacturer

What we offer:
SIEL’s production includes PV Inverters grid-connected and hybrid applications: single-phase inverters from 2 to 6 kWp, three-phase BT inverters from 10 to 500 kWp, three-phase TL inverters from 80 to 500 kWp, PS500 and PS1000 power stations. One of its latest products, SIAC SOLEIL trasformerless 10TL, is highly appreciated for its small size and flexibility in adverse climatic conditions i.e. shadowing.

Among SIEL’s outstanding innovations, the introduction of DSP (Digital Signal Processor) in three-phase machines has marked a fundamental step ahead from the previous analogical systems. Touch screen technology has improved the look and performance of SIEL displays through the direct display control on the performance and functions of the device, thus simplifying the way of changing parameters. All that, with a considerable reduction – from 3 to 1.5% – of the power needed for the machine ignition.
SIEL’s offer includes a set of on-going maintenance services such as installations telemanagement, multiannual maintenance agreements, specialized consulting, free-call help desk and the fast provision of genuine spare parts from the Company’s many world subsidiaries.
SIEL co-operates in many international projects on a regular basis.

What are we looking for:
SIEL SpA is looking for international partners that are interested in technical cooperation and commercial agreements.

Thematic Focus:
  • Photovoltaic
    • Inverters
  • Applications
    • Open land systems
    • On roof systems

Cooperation Interest:
  • Technology & Business Cooperation
    • Technical cooperation
    • Purchase
    • Sales and service partner

Co-operation interest with the following countries:
  • Austria
  • Belgium
  • Bulgaria
  • Cyprus
  • Czech Republic
  • Denmark
  • Estonia
  • Finland
  • France
  • Germany
  • Greece
  • Hungary
  • India
  • Ireland
  • Italy
  • Latvia
  • Lithuania
  • Luxembourg
  • Malta
  • Netherlands
  • Poland
  • Portugal
  • Romania
  • Slovakia
  • Slovenia
  • Spain
  • Sweden
  • Switzerland
  • United Kingdom
  • Other:
  • China
  • South Korea


Giancarlo Chiapparoli

Export line Manager
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