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Jupiter 1000: an innovative project for an industrial Power-to-Gas demonstrator

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  • Project initiator: GRT Gaz
  • Partners: McPhy Energy for the electrolysis;  Atmostat and CEA for methanation; Leroux & Lotz for CO2 capture; CEA for the R&D; CNR for the supply of renewable electricity and ensuring the installation’s future remote operation; RTE for data processing.
  • Duration of project: 2014 – 2019 (commissioning)
  • Cost of project:  €30 million, with funding from the State (ADEME), the European Union and South Region amounting to €10 million.

Context of how the project emerged:

To ensure energy transition, greenhouse gas emissions must be divided by 4 while the share of renewable energies must increase in final consumption.

To do this, it also necessary to develop technologies to store intermittent energies. Power-to- Gas is aimed at converting surplus renewable energy into hydrogen gas. The gas will then be stored and injected into the natural gas network.


Strategy and  objectives

The Power-to-Gas demonstrator Jupiter 1000, installed at Fos-sur-Mer, is the first Power-to-Gas installation to be linked to the French gas transport network, making it the only demonstrator of its type in France!  It is a response to the specific need to store intermittent energies, by creating a link between tradition gas and electricity grids.

Power-to-Gas meets a threefold challenge:

  • That of exploiting the excess electricity produced by renewable energy plants, by converting it into gas;
  • Supplying flexibility to the electricity grid, vital for the development of renewable energies, through the storage of electricity in the form of renewable gas;
  • Exploring a new method of recycling the CO2 emitted by human activities.

By providing a solution to the problem of storing electricity, Power-to-Gas facilitates the development of new renewable electricity production installations and thus contributes to strengthening the country’s energy independence. The aim of the project is to implement an innovative hydrogen production installation at the industrial scale.


The project’s innovative characteristics


The ambition of the Jupiter 1000 project is to launch at the industrial scale an innovative 1 MW hydrogen production installation composed of two electrolysers using two different technologies: PEM (membrane) and Alkaline. The demonstrator will also comprise a small CO2 capture unit on the chimneys of a neighbouring industrial company and a methanation unit to convert the hydrogen produced and the CO2 recycled into synthetic methane.

This carbon neutral gas will then be injected into the gas transport network. An injection/blending installation will ensure the conformity of the synthetic methane.  The electricity consumed is produced directly by the wind turbines present nearby at the Grand Port Maritime de Marseille.

Lastly, this project makes it possible to store very large quantities of energy over long periods.



Every flow is an opportunity in this project. CO2 becomes an opportunity in this energy transition project because it is a gas originating from fossil fuel that becomes green, thus part of a circular economy!

Results and perspectives

The project was labelled in 2015 by the Capénergies cluster. It will allow studying the technical-economic feasibility of the process and lead to the emergence of a new renewable gas production sector by 2030. The first stone was laid in January 2018.

It will provide a genuine advantage to the port of Marseille-Fos, which is diversifying and becoming attractive for future energies. This project gives the port a link with industrial activities in addition to its usual vocation.

Other power-to-gas demonstrators will follow, in view to industrial exploitation with larger installations everywhere in France.

#Powertogas #Renewableenergy #Marseille  #Demonstrator

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