Solutions builder for your energy challenges

We analyse the specific markets scenarios and regulatory framework, we evaluate the technical and economic conditions, we contribute to improve the strategical decisions of our clients and we provide unique ad-hoc solutions at different levels

Our services

What we provide

Our various services are designed to assist companies in optimizing their value chain: from strategy definition to day-to-day operations. 
Adding value from day one, each project is unique and our ad hoc solutions are tailor-made to fit each client’s needs and/or opportunities.
HES project team is committed to fulfil its work with the highest level of reactivity, responsibility and reliability.

HES Methodology

We offer a rigorous project support methodology to guarantee the quality of information, analysis and recommendations.
By having a total understanding of our client’s issues/opportunities, we establish a precise diagnosis that enables us to build up a P&L model to provide ad-hoc solutions and recommendations.
Adding value from day one, each project is unique and our solutions are tailor-made to fit each client’s needs and/or opportunities.





what makes

Our singularity

HES singularity lies in the combination of our technical expertise, in-depth knowledge of regulation and our understanding of energy markets.
In addition, the solutions we offer to our clients are supported by our management experience.
To add value, we immerse ourselves in our clients´ requirements and look for Integral solutions that are best adapted to their risk profile.

Management experience

Technical expertise

Regulation knowledge

Energy markets insights

We have worked together

They trust us

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Each month, one of our experts publishes an article describing his view on a specific topic of the constant changes taking place in the energy market, with special focus on the French market.

Céline Haya Sauvage

Marketing Responsible

Profesional Experience

Céline, a young and dynamic person, had a first experience in the tourism sector as a community manager at Loups du Gévaudan, in Lozère. She joined HES team in November 2021 to diversify her knowledge: learning about the energy sector, specialising in marketing strategies in order to improve the company’s customer relations and, at the same time, developing her skills in coordination and project management.


Céline graduated in Spanish and English Language, Literature and Civilisation at La Sorbonne IV (2018). She also holds a master’s degree II in cultural projects and establishments management, with a special focus on international tourism. She also studied abroad at the University of London (England) and Universidad de Morón (Argentina).