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Medhyterra project: a low-carbon ammonia import terminal

SUMMARY

The Medhyterra project involves redeveloping part of the Fos Tonkin site into a low-carbon ammonia import terminal. It calls for the construction of a 30,000 m³ storage tank to replace an LNG tank that has been out of operation for several years.

PROJECT

Molecules: NH3

Status: Planned

LOCATION

Country: France

COMPANIES

GLE Member: Elengy

Other Members: Trammo

OTHER

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KEY FIGURES

  • Between 120 and 150 million EUR planned investments
  • FID planned for 2026; Operational in 2029.
  • Import capacity of 200,000 tons of low-carbon ammonia per annum
  • 10 to 15 vessels unloaded per year
  • Storage tank of circa 30,000 cubic meters

Project description

The new terminal would comprise:

  • Transfer facilities for loading and unloading ships carrying ammonia, on the existing jetty;
  • A cryogenic ammonia storage tank (-33°C at atmospheric pressure, in liquid state) with a capacity of around 30,000 m³;
  • A pipeline supplying nearby industrial sites;
  • Railcar loading bays;
  • Tanker loading bays;
  • A connection to the French national railway network;
  • Safety devices including an emergency purification column and a vent;
  • Utility networks (cooling/heating water, nitrogen, instrument air, electricity, fire-fighting network, fuel gas)

How ammonia is transported to the terminal?
The Fos Tonkin terminal could receive around 200,000 tonnes of low-carbon ammonia per year, representing between 10 and 15 ship unloading operations per year.

Ammonia storage, management and processing at the terminal
A tank of around 30,000 m³ would store the ammonia and keep it in liquid form, at -33°C, pending distribution. An installation would enable ammonia to be diluted with water to obtain ammonia, in proportions that could be parameterized according to customer requirements.

How is ammonia shipped from the terminal?

  • Distribution by pipeline to neighboring industrial sites;
  • Distribution by train;
  • Distribution by tanker truck.

Commercial outlets
Elengy is considering a partnership with Trammo, a world leader in the transport and marketing of raw materials such as ammonia. Trammo would supply the terminal from its worldwide portfolio, using its fleet of dedicated vessels, and would distribute to its customers the ammonia it would collect on leaving the terminal.

Environmental aspects
The Dossier de demande d’autorisation environnementale (DDAE) to be submitted by Elengy in 2025 will demonstrate compliance with environmental regulations. It will include a technical presentation, process descriptions, monitoring methods, an environmental impact study, and a hazard analysis.

The study is expected to launch in early 2025 and will be publicly available during the consultation phase in the second half of 2025. It will follow French Environment Code articles L122-3, R122-4, and R122-5, covering land, sea, and air impacts, along with specific supplementary studies.

TIMELINE

First phase of the project

  • Preliminary consultation: Q4 2024
  • Planning permission and DDAE submitted: Q2 2025
  • Public enquiry: Q3 2025
  • Planning permission and prefectoral authorisation orders obtained: Q1 2026
  • Start of works: Q3 2026
  • Operational: 2029