THE GROUP
Specialist in Sustainability since 1993
BACKGROUND
After serving the French Housing Ministry as an expert in Solar Energy and Sustainability, Michel Raoust opened “Cabinet Raoust” in 1993, a thermal study consultancy firm, in order to support the rise of HQE (High Environmental Quality) in the building sector.
Therefore, he participated in 5 pilot projects that would serve as the basis of the first HQE Guideline.
During the 2007 Grenelle de l’Environnement, an environment forum which aim was to enhance concrete environmental measures in France, “Cabinet Raoust” became “TERAO SARL”. This change came with 3 founding principles of the new identity of TERAO:
KNOWLEDGE TRANSFER
After over 30 years of dedication to sustainability, Mr. Raoust invests now all his efforts in knowledge transfer so the new engineers can keep on improving his undertaking.
INNOVATION
TERAO takes advantage of the pioneering culture initiated by its founder, still deeply anchored nowadays. Indeed, our teams will provide systematically innovative solutions to the project team.
INTERNATIONAL DEVELOPMENT
TERAO carries out projects over the 5 continents, especially in Asia and Latin America where our development drove us to open local operational branches.
In 2022, Atixis Holding became the majority shareholder of TERAO. Atixis is an Engineering and Project Management Company, they bring complementary skills to TERAO. With its subsidiary in Vietnam, a development synergy is created with the China subsidiary and the Singapore subsidiary of TERAO.
VALUES
QUALITY
TERAO cultivates Quality Assurance from its experience of over 700 projects in France and abroad. Our numerous missions highlight our expertise and give us an important database improving our reliability.
Quality is at the heart of our studies and is part of the skills brought by each of us though experience and personality.
CONFIDENCE
Clients confidence built over the years rewards our efforts and dedication to Sustainable Buildings. Confidence is also inherent to our team bond, the projects we are involved in and the future that we shape positively.
This trusting relationship comforts us in the idea that we are doing the right thing. We are committed to continuous improvement of our services.
Finished projects
years of experiences
spoken languages
TERAO PIONEERING ROLE
TERAO stands at the forefront of Sustainable Building expertise owing to its 31 years of experience. TERAO and its collaborators have been participating actively both in France and abroad in the field of sustainable building and in emergent technologies thanks to publication of studies, calculation software editing and thanks to its participation in national and international working groups.
This everlasting culture of innovation enables us to offer solutions that anticipate the needs of project managers and guide them toward more and more high-performing and positive-impact buildings.
ENVIRONMENTAL RESPONSIBILITY
Environmental responsibility is a real driving force at TERAO. Beyond our obvious commitment to limiting the rapid depletion of natural resources, we give particular attention to the daily business reality of the different stakeholders so that good practices generalize and are not seen as a cost but rather as an added value.
INNOVATION
Innovation is our main focus at TERAO. Indeed, our company started with the conception of one of the first thermal simulation software as well as the creation and the execution of the first HQE (High Environmental Quality – French Green Building Standard) procedure. Nowadays, TERAO is one of the most referred engineering company to support energy performance.
Thanks to a multicultural firm that enhances a continuous pro-activity with innovative practices, we remain at the top of the performances within the built environment. While staying focus on the major overall dynamics, we work independently without following the trends.
Our solid international presence allows us to benefit from valuable feedback from the sites and customers and to constantly challenge our knowledge. Moreover, our clients take advantage of our high-quality added values through significant transfers of knowledge.
LEADERSHIP TEAM
A qualified multidisciplinary team
MANUEL RAMOS
Manuel Ramos is the APAC – Middle East Managing Partner of Terao and Atixis. He has a business background (business school/MBA). He has been in Singapore & has been involved in the Building Industry for around 10 years. As APAC – Middle East Managing Partner, he is committed to leading Terao’s initiative, which is helping mitigate climate change through its expertise in the building sector, and to make Terao’s voice audible in the market.
He is trilingual in French, English and Spanish. He could speak Chinese and Portuguese as well.
GUILLAUME ROUSSEIL
Holder of a Master’s degree in Sustainable Development Management from SKEMA Business School. Guillaume Rousseil has 24 years of experience in France and abroad, including 14 years in the energy efficiency sector of buildings. Before joining TERAO, Guillaume was an entrepreneur and manager of SMEs, business units and subsidiaries.
Guillaume is Chief Executive Officer of the TERAO Group. He leads the financial management, development and human resources and more broadly the structuring and growth of the TERAO Group. Now, he is based in Washington, USA.
He is trilingual in French, English and Spanish.
AYMERIC NOVEL
Holder of an engineering degree in eco-design and a master’s degree in the integration of energy efficiency and renewable energies in buildings. For 15 years at TERAO, he first developed TERAO’s activity in China for 6 years. A specialist in energy modelling, accredited by LEED-AP, CMVP (Performance Measurement and Verification) and CBCP (Commissioning of Buildings), he holds a PhD on energy performance contracting. Deputy General Manager of TERAO, he manages all production, and participates in the development of high value-added services as R&D director.
Aymeric Novel is trilingual in French, English and Chinese (Mandarin).
Our TERAO Asia team

Manuel Ramos
APAC - Middle East Managing Partner
“When he is not busy in meetings with potential customers, his favourite activity is to ask us “Do you remember TERAO values” ?”

Martin Desbrieres
Energy Efficiency & Operations BU Director

Angela Bejarano
Green Building Certification & Carbon Strategies BU Director

Gaspard Lemoine Scelles
Asia Business Development Director
“Strong advocate for healthy lifestyle”

Arnaud Rouchette
HR, Admin and Finance BU Director