about ewen 1 Ewen Energy


We were born in 2004 with the strong conviction that companies can make a more conscious use of energy, reducing costs and with less impact on the planet.

We are particularly focused on the industrial sector (including large buildings) and carry out detailed analysis of the manufacturing process, identifying, proposing and implementing the best energy efficiency measures to make companies more competitive.

The energy transition, as part of a decarbonization roadmap, enables the optimization of energy consumption, reduces the impact on the planet and contributes to a competitive advantage.

This is what Ewen wants to achieve, alongside you.


Luís Ribeiro
Director Ewen

We have 17 years of experience, offering specialized integrated service for companies that want to go down the decarbonization path.

Our high technical competence, openness, transparency and integrity allow us to create bonds of affinity with each of our clients. 

helexia engineer on a rooftop


With high technical competence, openness, transparency and integrity we want to help and support our clients in implementing their strategic roadmap for decarbonization and carbon neutrality.


Minimize waste and its impact on the planet.

Create new local and tailored solutions to better use, exploit and produce energy.

Ewen Energy Vision

Our story

Every day for over 10 years, our teams of passionate experts have been working with our customers on integrated, local and sustainable solutions for renewable energy production and energy efficiency.

We have a unique package of customized solutions for your energy transition.

Start of the company in France by Nicolas Mayaud & Benjamin Simonis. Implementation of the model and carrying out all the work (sales, project management, legal and financial).

Construction of the first project with several clients through financing with banks. First large industrial and logistics roofing projects were with Bontout SA (2.5 MWp), Auchan with the first shopping center in Montauban (France) and Ceetrus on the first Positive Energy building in Perpignan (France).

Start of internationalization to Italy - first self-consumption project with on-site PPA and recruitment of the first Italian employee.

Helexia reaches an installed capacity of 5 MWp.

Continued internationalization with the opening of Belgium in 2013 and the first 4 projects, all in self-consumption in buildings of industrial and logistics customers.

Implementation of projects with major retailers in France and Italy

Launch of the first energy performance contract for Leroy-Merlin Laurentina, Italy (-52% grid consumption).

The team becomes multinational and multidisciplinary.

Helexia reaches an installed capacity of 11.5 MWp.

The 2025 vision has been written: to become the energy services company of choice.

Structuring of an Energy Efficiency Department and construction of the first projects in France and Belgium (revitalization, HVAC), as well as the start of Energy Management in Italy.

Opening of Portugal in 2016 under the supervision of Luis Pinho, with the structuring of an international business development model.

Helexia builds its 100th photovoltaic plant and reaches 35 MWp of installed capacity + its 5th energy performance contract.

Internalization of Production Management with dedicated team and tools, in partnership with Ciel et Terre.

Signing of Energy Management contract with Auchan and Ceetrus in France as well as Leroy-Merlin in Italy and internalization of a strong energy management team.

First cogeneration projects and ISO 50001 consultancy for external clients.

The 200th photovoltaic plant was built, accumulating a capacity of 55 MWp + 10th energy performance contract. First projects in Spain.

Helexia is a global Energy Services Company present in 6 countries with 65 employees and provides a complete and unique package of energy solutions to its customers.

After 10 years of strong support from Creadev, its first shareholder, Helexia has joined forces with the Voltalia group as a stand-alone shareholder, allowing an acceleration of its development and ability to reach all its customers, worldwide, on all energy issues.

Structuring of the Helexia group and opening of Helexia Brazil and Helexia Morocco in early 2020.

Launch of the first Electric Mobility projects.

Helexia has recruited its 100th employee.

We are writing the story

If your business faces the challenge of decarbonization and self-consumption

we are ready to be your partner, from consulting to investment

Contact us