The Total-Mardyck Battery Energy Storage System is a 25,000kW energy storage project located in Mardyck, Dunkirk’s port district, France.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2020 and was commissioned in 2021.


The Total-Mardyck Battery Energy Storage System was developed by TotalEnergies. The project is owned by TotalEnergies (100%).

The key application of the project is fast reserve services.

Contractors involved

Omexom UK, Saft Groupe and TotalEnergies have delivered the battery energy storage project.

Additional information

The storage system represents an investment of around €15 million, will be based on Saft’s Intensium Max 20 High Energy solution and will comprise 11 integrated 2.3 MWh containers. It will be used to provide fast reserve services to support the stability of the French power grid. It is part of government policy to support the development of electrical capacity through capacity mechanisms.

About TotalEnergies

TotalEnergies SE (Total) formerly known as Total SE, is an integrated global energy company that discovers, produces, refines and markets oil and gas, and also manufactures petrochemicals. It carries out drilling, oil and gas production, processing, transportation, refining and petrochemical production, storage and distribution of petroleum products and specialty chemicals. It conducts power generation and gas trading and operates in renewable energy sector. Total supplies feedstock to refineries, charters ships and undertakes trading on various derivative markets. The company caters to the consumers in transportation, automotive, aerospace, energy, housing and manufacturing industries. It has operations across Asia-Pacific, Africa, Europe and Commonwealth of Independent States, the Middle East, and North and Central America. Total is headquartered in Courbevoie, France.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.