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McPhy to equip COEG plant with alkaline electrolyzer technology

McPhy has been selected to equip the Centrale Électrique de l’Ouest Guyanais (CEOG or Western French Guiana Power Plant), the world’s largest power plant project combining photovoltaic energy and massive storage of 128 MWh, mainly in the form of hydrogen. 

Combining a photovoltaic solar farm, a high-power, 16-MW electrolyzer, a hydrogen storage unit and high-power fuel cells, the CEOG plant will produce hydrogen that will be stored under pressure in tanks. This hydrogen will then be recombined with oxygen from the air in fuel cells to produce 24/7 non-polluting electricity and secure the supply of a competitively priced electricity, compared to the territory’s thermal power plants of the territory, to 10,000 households in French Guiana.

The hydrogen production platform, scheduled to be commissioned in 2024, will be equipped with McPhy’s “Augmented McLyzer” technology. The unique combination of high-pressure alkaline electrolysis (30 bar) and high current density electrodes will enable almost 860 tpy of green hydrogen.

Based on non-polluting energies, CEOG will avoid the emission of 39,000 tpy of CO2, compared to a fossil fuel power plant (1). This project will also be the first time that McPhy will be offering an outdoor version of its alkaline electrolysis technology. In addition to being the most suitable solution for an isolated geographical area, containerization ensures a high level of profitability for the customer. Indeed, the reduction in civil engineering costs and the pre-assembly of the equipment directly in McPhy’s plants, make it possible to optimize time and total installation and assembly costs.

(1) ADEME study:https://www.guyane.ademe.fr/sites/default/files/notes-emissions-gaz-effet-serre-secteur-energetique-guyane.pdf ; integrating CEOG’s carbon intensity of 0.136 kg CO2 eq/kWh; emission factor of the thermal kWh of the Guyanese coastline of 0.915 kg CO2 eq/kWh.