Industrial Decarbonization: OTEGO Strengthens Its Thermal Insulation Offering with Calomatech Acquisition

Lyon, France – OTEGO announces the acquisition of a majority stake in Calomatech, a specialist in industrial thermal insulation.

Objective: to rapidly and sustainably reduce thermal losses and the carbon footprint of industrial companies, both in France and internationally.

OTEGO Accelerates Its Measurable Energy Performance Strategy

With its strategic plan “CAP 2030,” the Group is evolving its positioning, combining operational excellence with environmental innovation: moving from material expertise to measurable industrial performance by integrating protection, energy efficiency and tangible carbon footprint reduction for its clients.

In 2024, OTEGO carried out a capital transaction with its long-standing investors (GENEO Capital Entrepreneur, Eximium and Bpifrance) in order to equip itself with the resources needed to expand into new activities aligned with current climate challenges.

The acquisition of a controlling stake in Calomatech fully aligns with this trajectory.

Calomatech: Turnkey Thermal Insulation Solutions, from Field to Digital

Founded in 2017, Calomatech operates directly at the heart of industrial facilities to reduce thermal losses, enhance operator safety and generate rapid, measurable energy savings.
The company deploys turnkey industrial thermal insulation solutions, from engineering studies to on-site implementation, supported by recognized field expertise. These solutions are already implemented at leading industrial sites across diverse sectors such as food processing, pharmaceuticals and shipbuilding, serving major groups including Sanofi and Total.

This operational approach is built on a database of more than 50,000 technical data points from industrial projects, a digital tool enabling remote assessments based on on-site photographs, and deployment timelines reduced to just eight weeks.

With Calomatech joining the Group, OTEGO aims to further accelerate the digitalization of these turnkey solutions by 2027, streamlining decision-making processes and strengthening measurable energy impact for industrial clients.

Governance and Development in France and Internationally

As part of the transaction, OTEGO becomes the majority shareholder of Calomatech.
Its founder, Gwenaël Breton, remains a shareholder and retains his role as Chief Executive Officer, ensuring operational continuity, field expertise and a strong customer-focused culture.

Following this partnership, the OTEGO Group is proud to maintain 100% French production (OTEGO: Lyon; Calomatech: Caen and Marseille), while continuing its “glocal” approach with a commercial presence across all five continents (85% of revenue generated from exports). Calomatech’s expertise represents a growth lever for OTEGO in industrial markets with strong demand for low-carbon solutions.

In the short term, development will focus on Europe (Spain, Italy, Belgium and Ireland), before a gradual rollout in North America and Asia, leveraging the Group’s international footprint.

With Calomatech, we are moving from a product-driven logic to a measurable energy performance approach directly implemented at industrial sites. This is a structuring milestone in our CAP 2030 plan.

Thierry Mosa, President of the OTEGO Group

« Joining the OTEGO Group will enable us to accelerate our international expansion while strengthening our innovation and industrialization capabilities. »

Gwenaël Breton, CEO of Calomatech