By Minener Editorial Team | May 2025
TotalEnergies H2 has entered the environmental evaluation phase for an ambitious green hydrogen and ammonia project in southern Chile. The initiative, named “H2 Magallanes”, will be located in the commune of San Gregorio in the Magallanes Region and represents one of the largest clean energy proposals in Chile to date, with an estimated investment of US$16 billion.
The project will be developed by TEC H2 MAG SpA, a subsidiary of TotalEnergies, in partnership with EREN. It includes the construction of a 5 GW wind farm that will power seven electrolysis centers for green hydrogen production. The hydrogen will then be converted into green ammonia using the Haber-Bosch process, utilizing nitrogen extracted from the atmosphere in a dedicated processing plant.
The ammonia plant will have a nominal production capacity of 10,800 tons per day, while hydrogen output will reach up to 1,750 tons daily. The industrial complex will rely on a desalination facility capable of supplying 1,300 liters of water per second, supported by a network for transporting demineralized water across the entire site.
International Terminal and Export Infrastructure
To facilitate global export, the project includes the construction of a maritime terminal for both import and export operations. The terminal will feature specialized docks, ramps, platforms, and towers designed for handling hazardous substances such as ammonia. It will also provide a storage capacity of 480,000 cubic meters, divided between the processing area and the port terminal.
Environmental Review and National Strategy Alignment
Currently under review through an Environmental Impact Study (EIA) submitted to Chile’s Environmental Assessment Service (SEIA), the H2 Magallanes project is aligned with Chile’s National Green Hydrogen Strategy launched in 2020. According to TotalEnergies, the initiative seeks to position Chile as a global leader in zero-emission fuel production, leveraging the exceptional wind potential of the Magallanes region.
Infrastructure, Timeline, and Lifespan
Project construction will include worker camps, an internal road network connecting various operational zones, and a natural gas backup power plant designed for future hydrogen conversion. The project is expected to be implemented in phases, in line with the deployment of electrolysis centers and wind turbines, and is designed for a lifespan exceeding 40 years.
As one of the most significant hydrogen investments in Latin America, H2 Magallanes may redefine Chile’s industrial role in the global energy transition while reshaping the economy of the country’s southernmost region.