TotalEnergies Galaxie

Conversion of a refinery site to “zero oil”

Located in the Seine-et-Marne region, around 50 km southeast of Paris, the Grandpuits oil refinery has begun its conversion to a zero-oil platform, focusing on other activities: the manufacture of biofuels, plastics recycling and photovoltaic energy production.

Artelia has been commissioned by TotalEnergies to manage the remodeling of the site and integrate the new plastics recycling unit.


Adapting its infrastructures to changing refining needs, while meeting the European Union’s energy transition and carbon neutrality objectives, TotalEnergies has decided to completely reconvert its Grandpuits site into an industrial platform focusing on alternative energies and plastic recycling. The project involves transforming the site’s entire infrastructure, replacing the old refining facilities with a photovoltaic power plant, a biofuel production unit and a waste plastic pyrolysis unit.

Artelia studied the integration of this pyrolysis unit, supplied by Plastic Energy. It will convert plastic waste into a recycled raw material which will then be transformed into polymers with properties identical to those of virgin polymers (notably compatible with food use). To ensure optimum conversion and prepare the site for the new units, our teams have also remodeled all existing facilities on the site (utilities, load and product logistics, buildings, control systems, electrical networks, etc.).

Preliminary designs have been completed, detailed studies are well advanced, and construction assistance has enabled the first structures to be handed over in 2023. The entire site will return to production in mid-2025. The Grandpuits platform has announced the continuation of its calls for applications to continue investing in the energy transition and circular industry, in order to produce carbon-based energies differently (carbon recycling, bio-methanization, etc.) and thus enhance French energy sovereignty.

Photo credits: TotalEnergies