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An italian company,
a global attitude.

Take a moment to read about us.
This is where we come from and what we made possible.



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Working beyond borders

Work System Integrator SRL (WSI) was born in 2018. The Company operates in the renewable energy market, both as an EPC and as a system integrator. It is focused on different market segments: photovoltaic systems, wind power plants, off-grid systems, mini-grid systems, hybrid systems, storage systems.

Logo WSI Spain



Focusing on renewable energy

WSI achieves a turnover of 4.1 million euros. At the end of the same year, the company Work System Integrator Spain SL and a Unión Temporal de Empresas (UTE) are established, both with headquarters in Spain.

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Birth of ESI SpA

The Balearic project begins, for the development of PV plants, for a value of 14.7 million euros. Work System Integrator SRL changes its name to Energy System Integrator SpA (ESI)


We've made our quality certificates available for download.


ISO 9001.pdf
ISO 14001.pdf
ISO 45001.pdf

Board of Directors

Felice Egidi

Felice Egidi

Chairman of the Board of Directors (Independent)

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Riccardo Di Pietrogiacomo

Riccardo Di Pietrogiacomo

Chief Executive Officer

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Stefano Plocco

Stefano Plocco

Chief Executive Officer

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francesco passeretti

Diego F. Passeretti

Chief Financial Officer

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Our Team

Antonio Fabbiani

roberto crupi

edoardo lolato

Cinzia Manzi

tommaso andreoli

cristiano di pietrogiacomo


Valerio Campioni

Giuseppe Pistolesi

Giampaolo Parente

Giulio Porzi

Alberto Di Pietrogiacomo

Giovanna Di Castro

Danilo Marchese

Manuela Verdecchia

alessandro campioni

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