About us

Our history

Over 60 years of experience at your service

Founded in 1963 by brothers Roland, Robert, and André St-Arnaud, Arno quickly built a reputation for excellence rooted in quality workmanship and a steadfast commitment to its clients. Now led by the second generation and preparing for the third, Arno remains a proudly family-owned Québec company, where the passion for delivering exceptional projects continues to thrive.

Client satisfaction and the expertise of our people have always been, and remain today, the key to our success.

Our evolution through time

1970

The 70’s marked Arno’s emergence as a leader in the construction of electrical substations.
Today, the company has completed hundreds of projects in this field, serving both Hydro-Québec and the private sector.

From 1980 to the 1990’s

The 1980’s to the 1990’s were decades of major industrial expansion in Québec. During this period, Arno carried out large-scale electrical and instrumentation projects in the pulp and paper, aluminum, steel, and petroleum sectors.

This era also enabled the company to strengthen its position in the hydroelectric market through significant projects in both new construction and refurbishment.
Recent achievements in this sector include the Romaine-3, Romaine-4, and Bersimis-2 projects.

2000s

The 2000s gave Arno the opportunity to expand in the medium-voltage distribution and high-voltage transmission market, completing projects ranging from 120 kV to 735 kV.

To this day, our work in these sectors delivered independently or through partnerships, approaches one billion dollars in total value.

In recent years

Throughout the years, Arno has also developed expertise in numerous related fields, including wireless telecommunications and high-voltage insulated cables.

More recently, the company has distinguished itself in the electric mobility sector, contributing to multiple projects linked to the battery industry and transportation electrification.

Message from the Chairman of the Board

Our group proudly stands on more than 60 years of achievements. Our founders demonstrated that hard work, perseverance, and integrity are the foundations of lasting success. We believe these values are more relevant than ever, and we remain firmly committed to upholding them and passing them on to the next generation.

– LOUIS ST-ARNAUD

Message from the President and CEO

It is with great pride that our Group continues to grow this remarkable family-owned company together with all our employees, a company whose reputation speaks for itself. Our constant focus on our workforce, the importance we place on communication, and the recognition of everyone’s efforts are key contributors to our success. If you are interested in joining our mission, we are always seeking new talent to help us maintain our position as an undisputed leader in our fields of expertise.

– DANY DUCHESNE

Our mission

To deliver high-quality, value-added services to our clients in the electrical energy sector, while pursuing steady, disciplined growth rooted in the values that have driven our success.

Our vision

To invest in our workforce—through training, skills development and to provide them with stimulating and demanding challenges that allow them to reach their full potential.

The values that define us

Honesty

Respect

Safety

Health and safety at the heart of our priorities

The health, safety, and well-being of our workers are shared core values that must be upheld by every member of our organization, at all levels, without compromise.