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Our latest projects

Storengy and partners: Find out about our latest achievements and projects. 

storengy - Our latest projects


It is the first Power-to-Gas project in France that combines:

  • methanisation (production of biomethane),
  • electrolysis (production of hydrogen),
  • methanation (production of synthetic methane)

Led by Storengy and located at Céré-la-Ronde in the Centre-Val de Loire region of central France, it provides a solution for a crucial challenge: transforming renewable electricity (and the CO2 contained in the biogas) into large quantities of hydrogen and synthetic methane in order to meet our customers’ needs, whether for green mobility powered by hydrogen and biogas (bio-CNG) or for injection into the natural gas network. The financing plan for this project has been completed. It is funded by the “Investing in the Future” (PIA) programme operated by ADEME (the French Environment and Energy Management Agency), the Centre-Val de Loire region and the European Regional Development Fund (ERDF).
Implementation date: 2020-2021

Read the press release

Hygreen Provence

HyGreen Provence, the first commercial project on this scale in France, is based on the construction of a local system to generate renewable power recovered as hydrogen gas, itself potentially stored in salt caverns on a Storengy site, with a view to ultimately supplying both industrial users and a network of green mobility filling stations across the region. Storengy's expertise, infrastructure and R&D on hydrogen production and surface or underground storage are key factors in bringing such a project to fruition.


RINGS (Research on the Injection of New Gases into Storage facilities) is a research and development partnership to study the behaviour of biomethane and hydrogen when mixed with natural gas in deep aquifers, with a view to storing them effectively. Undertaken in collaboration with the University of Pau and Pays de l'Adour (UPPA) and Teréga, work on these ‘new gases” primarily aims to determine an acceptable threshold in underground storage aquifers. Laboratory experiments will reproduce the reservoir conditions using samples of rock, micro-organisms, aquifer water and variable gas composition to provide a specific answer for each aquifer tested. The project started in 2018 and will continue until 2021. A second phase involving other European partners is currently being considered.

H2B project (Lesum)

H2B is a renewable hydrogen production project near Storengy's Lesum site. The facility is intended to supply customers in the city of Bremen and its surrounding area, such as industrial companies, green mobility operators and renewable gas consumers, either directly or through injection into the natural gas network. Its location close to the wind farms of northern Germany allows it to participate in renewable energy integration and provide back-up to the power grid as an energy storage system. Currently at the feasibility study stage, it is due to be launched in 2019 if given the go-ahead.


As part of a study on energy storage funded by the Energy Technology Institute (ETI), Storengy’s expertise provided detailed geo-scientific information. The results of the study confirmed that the technology for storing hydrogen in salt caverns is suitable with the salt strata used in the natural gas storage facilities of Storengy's site in Cheshire, and is one of the most cost-efficient solutions. Storengy is currently working on a hydrogen storage solution in collaboration with an electrolyser manufacturer in order to study the feasibility of a 100 MW electrolysis project (Centurion Project).  


STOPIL H2 is a pilot project for storing hydrogen in a salt cavern at Storengy's Etrez storage site in France. Backed by Géodénergies, an institute of excellence for energy transition (ITE), the project is supported by a consortium comprising Armines, Ineris, BRGM, Air Liquide, Geostock, Brouard Consulting and Storengy (project leader).
The first two-year phase aims to study the feasibility of filling the cavern with hydrogen and how tightness and injection/withdrawal tests are designed in order to analyse the behaviour of gas and of the cavern. In the second phase of the project, the tests will be performed based on the information gathered. The financing plan for this project has been completed. It is funded by Géodénergies.


A partner of the Centurion Project supported by Innovate UK, Storengy, together with ITM Power, Inovyn, Cadent and Element Energy, is launching the first phase of an innovation project aimed at setting up a 100 MW electrolyser combining the transport and storage of hydrogen.The goal is to produce low-carbon hydrogen for industrial uses, mobility and heating.
This first phase includes a feasibility study to demonstrate the attraction of Power-to-Gas in decarbonising the energy system by significantly reducing costs. The project could be the world’s largest energy storage system at the interface between gas and power networks. The feasibility study is co-funded by Innovate UK.