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Your energy transition partner

As technical and financial experts, we assist each client in a realistic, committed energy transformation.

Developed in retail by founder and President Otmane Hajji, the GreenYellow model is based on a disruptive idea: Utilizing the rooftops of stores and warehouses to produce photovoltaic solar power at a large scale. Since then, we have expanded our expertise. We are proficient in all energy solutions that make it possible to consume less and consume better. This has made us the energy partner for businesses and institutions. Our promise: Make their energy transition a success.



“To face energy challenges, decision-makers should no longer have to choose between economic and ecological benefits. With GreenYellow, their energy transformation becomes both profitable and responsible.”

Otmane Hajji, President of GreenYellow

Otmane Hajji

Our method has been proving its efficiency for 13 years: Combining a comprehensive view of energy with an approach customized to the realities of each client. To do so, our experts are present in every step of a project: Design, construction, financing, management, operation, and monitoring. All to ensure guaranteed performance over time.


The GreenYellow Executive Committee sharing the same passion

COMEX GreenYellow
Our Executive Committee: (from left to right) Philippe Houins, General Manager in charge of operations - Catherine Guyomard, General Manager in charge of Human Resources- Otmane Hajji, President - Gino Gauthier, General Manager in charge of Development and Partnerships

Our company has grown at a brisk pace. Internationally, we already have a presence in 15 countries, from Southeast Asia to Latin America. We’re reaching new kinds of clients, in logistics, industry, health care, transportation, local governments, and more. And to anticipate new energy practices, we are constantly innovating and adding new partnerships in strategic areas like self-consumption and electric mobility. Our ambition: Assisting our clients in all of their needs, wherever they’re located.

Les expertises de GreenYellow



Key figures

€1,2 billion

invested in photovoltaic solar installations and energy efficiency on our clients’ premises

335 MWp

of power installed worldwide



3,000 EEAs*

*Energy Efficiency Agreement



€84,5 million​

of energy savings per year to our clients



7,000 BtoB points

of consumption in electricity and gas managed

100,000 individual costumers

have subscribed to our energy supply offers



Shift to profitable Energy thanks to GreenYellow ! 

L'intégrité comme ligne de conduite

Entretenir des relations saines et durables avec l'ensemble de nos parties prenantes

Chez GreenYellow, nous accordons la plus haute importance aux relations que nous tissons avec l'ensemble de nos parties prenantes. Nous veillons à entretenir des relations saines et licites sur les différentes géographies où nous opérons.

Pour en savoir plus, consultez notre charte éthique et notre code de conduite des affaires.