Hellio, a key player in energy management

Listening to your needs, technical advice, carrying out work, administrative expertise and raising finance: Hellio provides comprehensive support to reduce and better manage energy consumption.

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million in revenue in 2022


homes renovated


professional partners

Our partners

They trust Hellio


We are very satisfied with the work carried out by Hellio, which helped us to finance a large part of this investment and make significant energy savings, with a beneficial impact on the environment.

Gilles Deschamps, Operations Manager at L’Imprimerie


Hellio has a thorough understanding of the potential for energy savings and the actions that can be taken to earn EEC. Insulating the terrace and lagging the hot water networks have resulted in energy and operating savings.

Damien Kocik, Investment Director, Hôpital Necker Enfants Malades (Necker Children Hospital)


We wanted to modernise and expand our refrigeration areas at our 3 sites. Hellio supported us and reassured us at every stage (understanding, financing, etc.). The EEC bonus financed 70% of the total cost of the work.

Pierre Leroy, manager of Sarl Leroy


The work went very well. Switching from fuel oil to pellets means that my house is well heated and I save €1,200 a year. What’s more, it cost me next to nothing, and it’s better for the environment!

Jérémy, private individual

It really was a welcome surprise to see projects completed with a bill of €0, with no payment. We’re already starting to feel the energy savings. The work has also improved the health of the communal areas.

Karen Plisson, co-ownership manager

Mickaël Schmith

25% more people hired, increased turnover and maintenance contracts: the partnership with Hellio has enabled us to develop our business significantly, with quality leads. Our contacts are attentive and highly responsive.

Mickaël Schmith, Manager of LMD Calorifuge and LC Thermic


Hellio enabled us to quickly invest in the renovation of the town hall and gymnasium. Without their support, these projects would have taken a minimum of 3 to 4 years to complete.

Mickaël Marquet, Mayor of Nuillé-sur-Vicoin (Mayenne)

The Hellio legacy


a de l’impact


Launch of the business as an energy efficiency operator


Specialisation in financing energy-saving work: Energy Saving Certificates (ESC)


Launch of an energy consultancy, to develop technical skills in energy efficiency


First launches of the business to private customers


Strengthening of our business sectors: industry, local authorities, services, agriculture, collective and individual residential with the launch of our single brand Hellio.


Hellio establishes itself as an energy renovation expert, a leader in full support, from A to Z, and a provider of financing for energy-saving work.


Our engineering firm changes its name to Akéa Énergies.

Thanks to our talents, your energy has an impact

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Hellio is constantly expanding and offers its employees a fulfilling working environment that encourages boldness and personal initiative

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Louis-Marie Gillier, Sales Manager for Collective Housing
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Hellio develops innovative projects, and innovation drives the best solutions for the energy transition.

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Patricia Ho-Hune, Expert in European and national funding
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For me, drawing on my experience in the building industry to work on energy renovation seemed to be a motivating change that gave meaning to my mission.

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Laurence Mahoudeau, Hellio Public Contracts Manager

Our Hellio experts


Chief Executive Officer

Pierre Maillard


Secretary General

Claire Gagnaire


Legal officer

Sandrine Deherre


Key Accounts Director

Augustin Bouet


Group Housing Director

Tanguy Dupont


Individual Residential Operations Director

Arthur Bernaugaud

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Public Affairs Director

Pierre-Marie Perrin


Press and Communications Director

Julie Baquet


Marketing Director

Julien Severe