Étudiant doctorant
Université de Guyane - Cayenne
- Type de contrat
- Autre
- Salaire
- Non communiqué
- Publié le
- 04/06/2026
- Source
- Description
- PhD Thesis Proposal: Joint Optimization of Electricity and Hydrogen Costs in a Tropical Photovoltaic SystemThe global energy transition encourages the development of solutions to decarbonize energy systems. Green hydrogen, produced through water electrolysis using renewable energy, is a key solution for industrial decarbonization, energy storage, and heavy mobility. Its economic viability depends on two key indicators: the Levelized Cost of Electricity (LCOE) and the Levelized Cost of Hydrogen (LCOH).French Guiana, an isolated territory, has significant solar potential, but its humid tropical climate (high temperatures, humidity, and marked seasonality) influences the performance of installations and the durability of equipment. The framework for this thesis will be the Guiana Space Center (CSG), within the HYGUANE project, which aims to produce green hydrogen from local photovoltaic plants.Current methods typically optimize LCOE and LCOH separately, without integrating system dynamics, equipment aging, or local climatic specificities. The objective is to design a methodology that jointly minimizes these two costs in a photovoltaic-hydrogen system in a tropical climate, while accounting for durability and uncertainties.To achieve this, a techno-economic model will integrate solar production, electrolysis, storage, and equipment aging. An optimization approach coupling LCOE and LCOH will be proposed, including infrastructure sizing and operational strategies. The robustness of the solutions will be evaluated against climatic variations and technical uncertainties. A decision-support tool will be developed, applicable to other island or isolated territories.The originality lies in a unified approach combining energy modeling, equipment aging, and economic analysis, with aging considered as a consequence of operational choices. The models will be adapted to local conditions, including electrical consumption patterns and the behavior of electrolyzers in equatorial environments.Expected results include an innovative joint optimization methodology for LCOE/LCOH, optimal scenarios for deploying renewable hydrogen, and an operational tool for local decision-makers. The outcomes will include methodological advancements in integrated energy optimization and application prospects for other similar territories.The thesis will span 48 months under a joint supervision agreement between the University of French Guiana and the Université Libre de Bruxelles. The PhD student will be hosted at the Guiana Space Center and will benefit from logistical support.Thesis supervision : Pr Seddik BACHA & Dr Idris SADLI (Guiana University), Pr Patrick HENDRICK (Université Libre de Bruxelles). Contact : Seddik.Bacha@univ-guyane.fr